hermes-webui/CHANGELOG.md

Hermes Web UI -- Changelog

[Unreleased]

Added

• PR #2059 by @ai-ag2026 — Append-only WebUI turn journal helper at api/turn_journal.py (new file, ~128 LOC). Writes one JSONL file per session under _turn_journal/ and fsyncs submitted-turn events before the worker thread starts via /api/chat/start (after pending session state is saved and before threading.Thread(...) starts). recovery_audit extended to report non-terminal journal turns as turn_journal_pending_turn when the submitted user message is not present in the sidecar. Intentionally the minimal slice from docs/rfcs/turn-journal.md (RFC #2042): writer + reader + state derivation + audit-only reporting. No replay or repair yet.

• PR #2062 by @ai-ag2026 — Turn-journal lifecycle events on top of #2059's submitted-event writer. Records worker_started when the streaming worker begins, assistant_started before the final session save once an assistant message exists, completed after the final save, and interrupted on the provider-error path. append_turn_journal_event_for_stream(...) reuses the turn_id associated with the stream's submitted event. Still audit-only / journaling-only — does not replay turns or repair assistant output. The little WAL goblin remains on a leash.

• PR #2089 by @plerohellec — Plugin-defined slash commands now surface in the WebUI command picker and execute via a new /api/commands/execute route (closes #1935). list_commands() in api/commands.py merges hermes_cli.plugins.get_plugin_commands() into the /api/commands payload with category: "Plugin"; the frontend intercepts plugin commands in static/messages.js and static/commands.js to route through the plugin execution endpoint instead of falling through to the agent. Pre-fix the WebUI only learned slash commands from hermes_cli.commands.COMMAND_REGISTRY (commands.py:23), so plugin-registered commands were invisible to the picker, autocomplete, and routing — they fell through to the agent as raw text and the agent's response was about an unknown command. This is the WebUI half of the parity fix; the corresponding agent-side plumbing already existed in hermes_cli/plugins.py:1424 (get_plugin_commands()).

Fixed

• PR #2085 by @bergeouss — Logs panel: clipboard _copyText() fallback + severity filter (closes #2081). Pre-fix copyLogsAll() called navigator.clipboard.writeText() directly with no fallback — failed silently on large payloads / non-secure contexts / unfocused pages, leaving users with a useless error toast. Now routes through _copyText() from ui.js which already has a <textarea> + document.execCommand('copy') fallback. Also adds a Severity dropdown (All / Errors / Warnings+) that filters the in-memory log cache without re-fetching — errors.log is ~90% WARNING tool noise so filtering down to ERROR/CRITICAL is a real triage time-saver. copyLogsAll() copies the FILTERED subset when a filter is active. 5 new i18n keys in all 9 locales.

• PR #2084 by @ai-ag2026 — Content-Security-Policy-Report-Only header (refs #1909). All WebUI responses now ship a CSP slice in report-only mode — non-enforcing, so the browser collects violations without blocking page behavior. Current UI compatibility allowances ('unsafe-inline', 'unsafe-eval' for scripts, 'unsafe-inline' for styles) are explicit so future tightening passes can replace them one constraint at a time. object-src 'none' and base-uri 'self' + frame-ancestors 'self' are already enforced because they don't break the current UI. Server-side change only (server.py headers), zero client-side risk.

[v0.51.45] — 2026-05-11 — Release U (9-PR contributor batch — themes docs + gitignore policy + kanban parity + skill cache patching + fork lineage + sidebar spinner + custom provider slug + session recovery polish + compression anchor refactor)

Added

• PR #2074 by @franksong2702 — _patch_skill_home_modules(home) centralizes patching of both tools.skills_tool and tools.skill_manager_tool module-level skill paths so process-wide HERMES_HOME switches and per-request streaming switches stay aligned. Closes #2023. Closes the cleanup gap from the original #2023 fix where the streaming per-request path patched both modules but the process-wide switch path only patched tools.skills_tool. Preserves the no-import-under-_ENV_LOCK invariant from #2024.

• PR #2077 by @franksong2702 — Compression anchor visibility helpers collapsed into a single shared module api/compression_anchor.py (new file, 77 lines) so the manual /api/session/compress path in api/routes.py and the streaming auto-compression path in api/streaming.py share one canonical implementation. Net effect: 48 lines removed from routes.py, 41 from streaming.py, plus 59-line regression suite. Closes #2028.

Fixed

• PR #2068 by @franksong2702 — Stuck sidebar spinners on completed sessions (closes #2066). _isSessionLocallyStreaming() no longer consults INFLIGHT for non-active sessions — INFLIGHT entries for non-active sessions are always artifacts and never affect spinner state. Added _purgeStaleInflightEntries() cleanup pass and 71-line regression file tests/test_issue2066_stale_sidebar_spinner.py covering the abnormal-termination cases (page refresh / network drop / gateway restart) that the symptomatic 5-minute-staleness alternative would have left broken.

• PR #2056 by @franksong2702 — Custom provider name slugs no longer preserve slug-hostile punctuation (closes #2047). Friendly setup names like Local (127.0.0.1:15721) now become custom:local-127.0.0.1-15721 instead of custom:local-(127.0.0.1:15721). The latter shape collided with the @provider:model grammar and could corrupt the model into 15721):deepseek-v4-flash. Endpoint-derived custom:<host>:<port> slugs continue to flow through the host-port parser unchanged. _custom_provider_slug_from_name() is now reused by both model resolution and available-model lookup instead of duplicating lower().replace(" ", "-").

• PR #2065 by @franksong2702 — Four low-severity polish items from the v0.51.42 Opus pre-release review (closes #2050). (1) state.db rows with source='webui' but zero readable messages now emit state_db_orphan_webui_row / unsafe_to_repair / manual_review instead of being silently dropped. (2) repair_safe_session_recovery() returns an explicit clean flag preserving ok for compatibility; /api/session/recovery/repair-safe 200/409 dispatch keys off clean, so a 409 now means "audit still has findings" rather than "repair code failed." (3) MEDIA_ALLOWED_ROOTS splits on os.pathsep (POSIX : / Windows ;) instead of a hard-coded colon. (4) Replaced the confusing details[-1:] one-element slice with an explicit local detail-recorded flag.

• PR #2063 by @dso2ng — Explicit session_source="fork" sessions are kept out of read_session_lineage_report() continuation chains. The query now fetches optional session_source so the existing continuation helper can see fork metadata; pre-fix the backend read-only lineage report bridge added in #2012 contradicted the sidebar collapse logic taught in #2014 (where forks are explicit branches, not compression continuations). Regression covers a fork child whose parent ended via compression.

Refactored

• PR #2077 (cross-listed) — see Added.

Documentation

• PR #2088 by @michael-dg — THEMES.md re-aligned with the post-#627 Theme × Skin architecture. The old monolithic palette names (Dark, Light, Slate, Solarized Dark, Monokai, Nord, OLED) no longer match the actual two-picker model (Theme System / Dark / Light applied as .dark class on <html>, plus Skin — 8 named accent palettes — applied as data-skin="<name>"). The Settings → Appearance panel exposes both pickers plus Font Size, and /theme <name> accepts theme + skin tokens.

• PR #2073 by @ai-ag2026 — Top-level Markdown docs (docs/*.md) are now tracked instead of silently ignored by the broad docs/* rule. Arbitrary scratch/reference files under docs/ (non-.md) remain ignored by default. Regression tests cover the intended git check-ignore behavior on both paths.

Tests

• PR #2076 by @franksong2702 — test_kanban_locale_parity (added to tests/test_kanban_ui_static.py) catches missing-key regressions across ~86 kanban_* i18n keys × 9 locales (en, ja, ru, es, de, zh, zh-Hant, pt, ko). Follows the existing test_lineage_segment_locale_keys_are_defined_for_sidebar_locales pattern. Issue #1973 flagged that this regression class was previously caught only by manual review during the Opus pre-ship audit.

Stage-338 maintainer review (Opus advisor)

• api/providers.py:1049 — Custom provider entries that slugify to an empty string were silently dropped, which made misconfigurations hard to diagnose. logger.warning() now surfaces the bad config entry. ~4 LOC; pure observability change.

[v0.51.44] — 2026-05-11 — Release T (5-PR contributor batch — security + worktree sessions + LM Studio + onboarding docs + transcript dedup, plus comprehensive test-suite network isolation)

Added

• PR #2052 by @franksong2702 — docs/onboarding.md (181 lines) covering install path choices, safe wizard re-runs with isolated HERMES_HOME / HERMES_WEBUI_STATE_DIR, provider groups, Docker/local-server Base URL rules (the most common Discord support question — localhost inside a container is not the host running LM Studio or Ollama), workspace setup, password step, files written by the wizard, and issue-reporting diagnostics. README pointer added from the quick-start section and Docs list. Stale ~/.hermes/webui-mvp → ~/.hermes/webui correction in .env.example and the README env-var table (the running app uses ~/.hermes/webui per api/config.py:42).

• PR #2053 by @franksong2702 — Worktree-backed session creation. POST /api/session/new accepts a worktree: true flag that calls the agent's _setup_worktree() helper to create an isolated git worktree at <repo>/.worktrees/hermes-XXXX, persists worktree_path / worktree_branch / worktree_repo_root / worktree_created_at on the WebUI Session, surfaces a "New conversation in worktree" action in the workspace menu, and shows a subtle sidebar worktree indicator. Empty worktree sessions stay visible in the sidebar (the empty-session filter at api/models.py:1067/1107 exempts sessions with a worktree_path). Note: the underlying Hermes Agent helper may add .worktrees/ to the repository .gitignore the first time a worktree is created for that repo — operators will see a small uncommitted edit to .gitignore after their first worktree session. Cleanup lifecycle (auto-remove on session delete/archive) is deliberately deferred to a follow-up PR — needs explicit safeguards for active streams, terminals, dirty files, and unpushed commits. Closes #1955.

• PR #1970 by @dobby-d-elf — First-class LM Studio provider support with live model discovery. A dedicated elif pid == "lmstudio": branch in get_available_models() calls hermes_cli.provider_model_ids("lmstudio") first, falling back to a direct GET <base_url>/models request when env vars (LM_API_KEY + LM_BASE_URL) haven't been injected yet — this fixes the race where the provider's .env isn't loaded into os.environ before the picker runs. Detection in detected_providers now also fires on LM_API_KEY + LM_BASE_URL env vars and on cfg["providers"]["lmstudio"] config entries. The new _get_provider_base_url() helper plus the change to resolve_model_provider() from return bare_model, provider_hint, None to return bare_model, provider_hint, _get_provider_base_url(provider_hint) lets users with providers.<id>.base_url in config.yaml flow that URL through model resolution consistently (pre-fix they had to also set it under cfg["model"]). The "Configured" badge code from the initial PR submission was dropped per maintainer review — see PR #1970 thread for the UX discussion.

Fixed

• PR #2048 by @Hinotoi-agent — [security] Session import validates workspace field against resolve_trusted_workspace(). Pre-fix, a crafted JSON import with "workspace": "/" was persisted as the Session.workspace, after which /api/file?session_id=<sid>&path=etc/hosts resolved against / and served host files. The patch routes the imported value through the same resolver every other workspace-bearing endpoint already uses (/api/session/new, /api/branch, /api/fork, /api/clone), returning 400 on ValueError (blocked system root) or TypeError (non-path workspace value like {"not": "a path"}). Severity is highest on 0.0.0.0-bound / reverse-proxied / LAN-exposed deployments with password auth where PR:L applies — there the bug turned "authenticated session creation" into "authenticated read of any process-readable file." Default loopback-only deployments without auth were lower risk because anyone on loopback can usually read /etc/hosts directly. Includes 105 LOC of regression coverage in tests/test_session_import_workspace_validation.py and a belt-and-braces invariant test against the resolver itself.

• PR #2055 by @franksong2702 — Duplicate assistant transcript merge. _merge_display_messages_after_agent_result() at api/streaming.py:1754 now skips adjacent duplicate assistant messages by merge identity (role + content + tool_call_id + json.dumps(tool_calls, sort_keys=True)). Some provider/result replay paths produced two copies of the same assistant bubble in the current delta, which then got persisted into s.messages and sent back to the browser in the done SSE payload, producing duplicate assistant chat bubbles. The guard is intentionally adjacent-only so two separate turns that happen to produce identical assistant text remain visible — confirmed via the new negative-path test. Closes #2051.

Fixed (maintainer review on stage-337)

• PR #1970 lmstudio regression — the new lmstudio branch in get_available_models() only looked at cfg["providers"]["lmstudio"]["base_url"], missing the historical config shape where users put base_url under cfg["model"] when model.provider == lmstudio. Three pre-existing tests in tests/test_issue1527_lmstudio_base_url_classification.py broke on stage-337 because of this gap. The fix enhances _get_provider_base_url() to fall back to cfg["model"]["base_url"] when cfg["model"]["provider"] matches the requested provider id, then routes the lmstudio branch through the helper. Belt-and-suspenders negative-case test asserts model.base_url does NOT leak to non-active providers (so a user with model.provider: anthropic + model.base_url: <anthropic-proxy> + providers.openai without base_url still gets None for openai, not the anthropic proxy URL). 6 new regression tests in tests/test_pr1970_lmstudio_base_url_fallback.py.

• PR #2053 × PR #2041 state.db worktree recovery silent data loss — Opus advisor caught this during stage review. PR #2041 (v0.51.42) added state.db sidecar reconciliation that rebuilds a missing <sid>.json from the canonical state.db row. PR #2053 added worktree-backed sessions with new metadata fields. _state_db_row_to_sidecar() was hard-coding 'workspace': '' and not propagating worktree_path / worktree_branch / worktree_repo_root / worktree_created_at / message_count from the row to the rebuilt sidecar. Result: a worktree-backed session that lost its JSON sidecar and got rebuilt from state.db disappeared from the sidebar (the empty-session filter at api/models.py:1067 exempts sessions with worktree_path, but the rebuilt sidecar had none) and downstream tools (terminal panels, file pickers using s.workspace) operated on empty string. Fix: extend the _read_state_db_missing_sidecar_rows() SELECT to include the missing columns (each gated by _sql_optional_col() for older state.db schemas) and propagate them in _state_db_row_to_sidecar(). Three new regression tests in tests/test_state_db_worktree_recovery.py lock the round-trip, the non-worktree no-spurious-propagation case, and the empty-worktree-session-must-stay-visible invariant.

Test infrastructure

• Hermetic network isolation across the whole test suite. Before this release, an accidentally-leaking outbound TLS handshake from the test_server fixture (Anthropic IPv6, Amazon, OpenRouter, observed via ss -tnp during stage-337 debugging) was adding 60+s of wall-time to pytest runs and creating a class of flaky failures. Two new layers now enforce no-outbound by default:

  1. Pytest process (tests/conftest.py module-level monkey-patch on socket.create_connection + socket.socket.connect). Allowed destinations: loopback (127.0.0.0/8, ::1), RFC1918 (10/8, 172.16/12, 192.168/16), link-local (169.254/16), RFC5737 TEST-NET-3 (203.0.113/24), RFC2606 reserved TLDs (.invalid, .test, .example, .local, localhost). Everything else raises OSError("hermes test network isolation"). Tests that legitimately need real outbound opt back in via the new allow_outbound_network fixture (zero current callers).

  2. test_server subprocess (server.py). HERMES_WEBUI_TEST_NETWORK_BLOCK=1 env var (set by tests/conftest.py on every spawn) activates an identical guard at the top of server.py at import time, before any api/* module loads. The env var is unset in production, so the guard is a no-op outside the test harness. Without this, the pytest-side block didn't cover the spawned subprocess.

• test_dns_resolution_failure refactored to mock socket.getaddrinfo raising gaierror instead of relying on real DNS for a *.invalid hostname. Hermetic now, and matches the mock-based pattern every other test in the same file uses.

• tests/test_conftest_network_isolation.py with 9 adversarial tests proving (a) outbound to the exact Anthropic IPv6 + Amazon IPv4 + Google DNS destinations we observed leaking is now blocked, (b) loopback / RFC1918 / link-local / reserved-TLD destinations pass through, (c) the allow_outbound_network opt-in fixture works.

Tests

5,166 → 5,192 collected (+26 net new across the 4 new regression test files). All passing on Python 3.11/3.12/3.13. Full suite wall-time: 161s → 95s (the previously-leaking outbound TLS handshakes were the long tail).

Contributors

@Hinotoi-agent (×1, first contribution) · @franksong2702 (×3) · @dobby-d-elf (×1, first contribution) · @nesquena (3 maintainer review fixes)

Notes

• The state.db × worktree recovery interaction (PR #2053 × PR #2041) is the second case in two releases where Opus advisor caught a real cross-PR data-loss bug that neither PR's individual test suite would have surfaced (the first was the v0.51.43 CSS breakpoint asymmetry). The pattern is worth its weight — cross-PR adversarial review with grep-grounded prompts catches what unit tests miss when the failure mode lives at the seam between two features.

• LM Studio support is now first-class. Live model discovery + base URL discovery from either providers.<id>.base_url OR cfg["model"]["base_url"] (when model.provider matches) means users with either config shape get a populated model picker without manual config.yaml edits.

[v0.51.43] — 2026-05-11 — Release S (fused community PR — desktop sidebar collapse)

Added

• PR #2054 by @jasonjcwu and @spektro33 (fused, co-authored) — Desktop users can now collapse the session-list sidebar by clicking the already-active rail icon, or with Cmd/Ctrl+B. State persists across reloads via localStorage and survives bfcache restores. Two discoverability paths, no new visible UI affordance — default appearance is identical to master, only users who actively try to toggle ever see a difference. Cross-panel rail clicks behave exactly as before (no collapse, just panel switch). Mobile (<641px) is unaffected. The behaviour is gated behind one new opts.fromRailClick flag on switchPanel() so every programmatic call-site (commands, deeplinks, internal state changes) preserves master semantics exactly. Inline <script> flash-prevention in <head> sets data-sidebar-collapsed='1' on <html> BEFORE the stylesheet loads, so cold loads with persisted-collapsed state paint correctly from frame 0 with no flicker. aria-expanded mirrors open/collapsed state on the active rail button for screen-reader announcements. Smooth .24s cubic-bezier(.22,1,.36,1) slide animation matches the workspace-panel collapse on the right. Drag-resize cursor stays instant via body.resizing .sidebar { transition:none }. Closes #1884 (jasonjcwu) and #1924 (spektro33).

Fixed (maintainer review on PR #2054)

• CSS breakpoint asymmetry — pre-fix, the JS _isDesktopWidth() guard matched min-width:641px (where the rail itself becomes visible) but the .sidebar-collapsed CSS rules were inside @media(min-width:901px) (copied from the workspace-panel block without thinking). In the 641-900px band (tablet portrait, small laptop windows), clicking the active rail icon would write .sidebar-collapsed to the DOM, set aria-expanded='false', and persist localStorage='1' — but the sidebar would visually stay open at 300px because CSS didn't match. User sees no visual change, screen reader announces "collapsed" for a still-visible sidebar, then resizing ≥901px later collapses by surprise. Fix hoists the three .sidebar-collapsed rules into their own @media(min-width:641px) block. Caught by @nesquena reviewing PR #2054; new regression test test_css_breakpoint_matches_js_isdesktopwidth parses both files at every CI run and asserts the JS / CSS thresholds match.

Test infrastructure

• AWS_EC2_METADATA_DISABLED=true set at conftest module load — botocore's credential chain probes EC2 IMDS (169.254.169.254) by default during agent imports. On VPS hosts where IMDS is reachable but rate-limited (HTTP 429), this dragged a 161s test run to 600+s. Matches the guard hermes_cli/doctor.py already uses in its parallel-probe block.

• Credential-strip allowlist expanded from 6 prefixes to 40+ — the test_server fixture now strips MEM0, XAI, MISTRAL, OLLAMA, GROQ, AWS, Azure OpenAI, messaging bot tokens, search-engine API keys, image-gen keys, GitHub tokens, etc. before spawning the test server. Defence-in-depth against accidental outbound API calls from tests; a real outbound TLS connection to a provider's IPv6 endpoint was observed during test runs before the expansion. The test server uses a mock config and should never make real provider calls.

Tests

5,120 → 5,166 collected (+46 net new across the 35-test structural suite for sidebar collapse, the CSS-breakpoint regression guard nesquena added, and small per-locale i18n additions in dependent suites). All passing on Python 3.11/3.12/3.13.

Notes

• This is the first PR in the repo where the maintainer review caught a real defect (CSS breakpoint asymmetry) before merge AND the fix was pushed directly onto the contributor's branch with a regression test. The merged commit includes both the original fusion and the fix as separate authored commits, preserving the audit trail.

[v0.51.42] — 2026-05-11 — Release R (5-PR contributor batch — session recovery state.db reconciliation + RFC convention + MEDIA_ALLOWED_ROOTS + Slack cron delivery)

Added

• PR #2040 by @ai-ag2026 — Read-only GET /api/session/recovery/audit endpoint that returns the existing audit report (live + .bak + state.db cross-check) over HTTP, and POST /api/session/recovery/repair-safe that runs the same deterministic repairs as startup recovery (recover_all_sessions_on_startup) and returns before/after audit evidence. The POST returns 409 when repairable/unsafe findings remain rather than reporting ok for an incomplete repair. Both routes inherit the global check_auth() gate at server.py:133. CLI parity: python -m api.session_recovery --repair-safe for operators on the box without HTTP access.

• PR #2041 by @ai-ag2026 — DB-backed reconciliation for WebUI-origin sessions whose JSON sidecar is missing. When state.db.sessions has a source='webui' row but ~/.hermes/webui-public/sessions/<sid>.json is gone (failed save, manual rm, restore-from-backup with mismatched dirs), the new recover_missing_sidecars_from_state_db() materializes a safe sidecar from the canonical row plus ordered messages rows. Never overwrites an existing sidecar. Atomic write via per-pid/per-tid .json.reconcile.tmp.<pid>.<tid> + os.link() create-or-fail (closes the TOCTOU window against concurrent Session.save(); on race-loss the live sidecar wins and reconciliation silently skips). Only source='webui' rows are materialized; CLI/messaging/cron rows stay on their existing bridge path. Rows without readable message bodies are skipped (no blank-shell sidecars). Audit reports unrepaired rows as state_db_missing_sidecar / repairable. Includes a round-trip schema-parity test that loads a materialized sidecar through Session.load() to catch future drift between _state_db_row_to_sidecar() and Session.__init__().

• PR #2042 by @ai-ag2026 — Crash-safe turn-journal RFC at docs/rfcs/turn-journal.md. Establishes the docs/rfcs/ convention with a small README explaining when an RFC applies (durability/recovery, schema, new architectural primitives) and the status header format. The RFC itself proposes a JSONL write-ahead log per session that records turn intent before the worker starts, so crash recovery can replace inference-from-fragments with deterministic replay. Status: Proposed; ships as a design document, not as an implementation.

• PR #2044 by @watzon — MEDIA_ALLOWED_ROOTS environment variable extends /api/media file-serving whitelist at runtime. The built-in allowed roots (~/.hermes, /tmp, active workspace) remain the default; setting MEDIA_ALLOWED_ROOTS=/home/user/models:/home/user/Pictures (colon-separated absolute paths) appends to the list. Non-existent or invalid entries are silently skipped. Resolves the "local MEDIA: path blocked outside allowed roots" usability gap for power users who keep ComfyUI outputs, model assets, or shared media in custom directories. Path-traversal validation (Path.resolve() + commonpath containment check) unchanged; SVG-as-attachment guard unchanged; image-MIME inline-only guard unchanged. Static unit test confirms the env var is referenced in source.

• PR #2045 by @georgebdavis — Slack appears in the cron delivery dropdown alongside Local / Discord / Telegram. The WebUI cron handler at api/routes.py:7066 passes body.get("deliver") straight through to cron.jobs.create_job, and hermes-agent already routes deliver=slack to the Slack platform adapter — this was a frontend-only gap. First-time contributor.

Fixed (maintainer follow-up to PR #2041)

• Concurrency hardening — Two data-corruption vectors flagged in Opus review of #2041, fixed in the staged release rather than left as follow-up: (1) the .reconcile.tmp filename now includes pid+tid (was a fixed path per SID, vulnerable to two-operator interleaved writes corrupting the same tmp); (2) tmp.replace(target) swapped for os.link() + unlink(tmp) so a race with a concurrent Session.save() for the same SID can't overwrite a live sidecar (skips with sidecar_appeared_during_reconcile instead). Matches the existing Session.save() convention at api/models.py:484.

Tests

5108 → 5120 passing, 8 skipped, 1 xfailed, 2 xpassed, 0 regressions (+12 net passing across new test files for session-recovery-API HTTP-shape contracts, state.db sidecar reconciliation including the round-trip schema-parity guard and the per-pid tmp-suffix guard, and the MEDIA_ALLOWED_ROOTS static reference). Full suite ~161s on Python 3.11 with HERMES_HOME isolation.

Notes

• New convention: docs/rfcs/ for design documents on durability, recovery, schema, and cross-cutting infrastructure. First entry is the turn-journal RFC from #2042; future contributors are invited to file design proposals there before large changes.

[v0.51.41] — 2026-05-11 — Release Q (3-PR contributor batch — session recovery audit + run-lifecycle health + transcript dedup)

Fixed

• PR #2035 by @ai-ag2026 — Recover orphaned <sid>.json.bak snapshots on startup (extends #1558 P0 fix). The existing post-#1558 recovery path only scanned *.json, so a crash that left only the .bak snapshot meant data was on disk but invisible to /api/sessions and the sidebar. Now the startup self-heal looks up the orphan sid in state.db.sessions; if the row exists, the snapshot is restored, the session index rebuilt, and the live sidecar appears again. If state.db lacks the row (explicit tombstone), the orphan is left alone. Companion change in api/routes.py unlinks <sid>.json.bak on explicit delete so intentional deletes don't get resurrected later. Fail-open on state.db unreadable/locked/older-schema — recovery stays best-effort.

• PR #2036 by @ai-ag2026 — Read-only audit_session_recovery() report + module CLI (python -m api.session_recovery --audit --session-dir <dir> [--state-db <db>]). Classifies shrunken live sidecars, orphan backups, orphans without a state.db row, and stale _index.json entries. Pure read-only audit — no writes, no rebuilds, no restores. Outputs machine-readable JSON. Stacked on #2035 (and auto-closed it).

• PR #2038 by @franksong2702 — Closed the message-identity dedup gap in /api/session messaging transcript merges (closes #2027). The dedup key now prefers id/message_id when message identity is available; legacy role/content/timestamp/tool-metadata key remains as fallback for messages without IDs. Prevents silent loss of legitimate retries (rare but high-impact when it hits).

Added

• PR #2039 by @ai-ag2026 — Active-run lifecycle visibility in /health. SSE active_streams only describes channel state; a worker can outlive its SSE stream while unwinding, blocked in a provider call, handling cancellation, or waiting on delegated work. Adds active_runs, per-run metadata/age, oldest_run_age_seconds, last_run_finished_at, and idle grace timing. Restart/update guards now have visibility into worker lifecycle, not just SSE channel state. Worker lifecycle wired through _register_run / _update_run / _unregister_run in streaming.

Tests

5100 → 5108 passing, 0 regressions (+8 net new across new test files for session-recovery audit, run-lifecycle health, transcript dedup, and orphan-backup recovery). Full suite ~160s on Python 3.11 with HERMES_HOME isolation.

Notes

• 3 PRs from 2 different authors (#2035 stacked under #2036 — auto-closed when #2036 merged).
• api/routes.py was touched by all three PRs with disjoint hunks (#2039 at lines 2529/2609, #2038 at 3040, #2036 at 4147).
• CHANGELOG.md was the only true conflict (#2038 predates v0.51.40 release entry); resolved by preserving v0.51.40 history and re-adding the #2038 bullet under [Unreleased] before promoting.

Follow-ups

• Test isolation: at least one test in test_update_banner_fixes.py or test_updates.py triggers a real os.execv that re-executes the entire pytest suite. Suite still passes (~5108 each loop) but full run takes 4× the time. Worth a targeted fix in the next maintenance batch.

[v0.51.40] — 2026-05-11 — Release P (4-PR contributor batch — quota subprocess hardening + env-lock prewarm + cron one-shot warning + Xiaomi env key)

Fixed

• PR #2030 by @Michaelyklam — Hardened the account-usage quota probe subprocess path (#1912 slice 1 of N): added a module-level bounded semaphore to cap concurrent profile-isolated probe children, set stdin=subprocess.DEVNULL for the child, and wired preexec_fn + prctl(PR_SET_PDEATHSIG, SIGTERM) so probe children receive SIGTERM if the WebUI parent dies. Persistent warm worker reuse remains the next follow-up if this slice is not enough under load.

• PR #2032 by @Michaelyklam — Moved skill-tool imports outside the streaming _ENV_LOCK critical section (closes #2024). First-time tools.skills_tool / tools.skill_manager_tool imports now run via _prewarm_skill_tool_modules() before the lock is acquired; the in-lock path uses sys.modules.get(...) lookups and existing HERMES_HOME / SKILLS_DIR attribute patching. Keeps the lock critical section limited to lightweight env/cache mutation so concurrent streams don't wait behind cold import latency. AST/source-level regression test guards against reintroducing in-lock imports.

• PR #2033 by @franksong2702 — Surfaced one-shot cron schedule semantics in the WebUI Scheduled Jobs form (refs #2031). Hermes Agent treats bare durations/dates (30m, 2h, 2026-05-11T08:00) as one-shot schedules that get removed after they run; the form now classifies the input and shows a live warning hint pointing users toward every 30m or a cron expression for recurring jobs. Static regression coverage for the classifier, warning wiring, i18n keys, and CSS class.

• PR #2034 by @franksong2702 — Closed the Xiaomi MiMo XIAOMI_API_KEY env-detection gap (issue #2025). WebUI now treats Xiaomi like the other API-key providers: exported or .env-stored XIAOMI_API_KEY enables the Xiaomi model group fallback in get_available_models(), Settings provider-key detection via /api/providers, and onboarding provider metadata with the direct API base URL. README/CHANGELOG provider notes updated; provider-env scrub lists extended so real local Xiaomi keys don't leak into tests.

Tests

5082 → 5100 passing, 0 regressions (+18 net new across the four new test files for #2024 invariant, quota subprocess, cron one-shot warning, and Xiaomi env detection). Full suite under 152s on Python 3.11 with HERMES_HOME isolation.

Notes

• 4 PRs from 3 different authors. api/providers.py was touched by #2030 (+110/-7 in quota probe path) and #2034 (+1 in _PROVIDER_ENV_VAR map) with disjoint hunks. CHANGELOG.md Unreleased section was the only true conflict (#2033 + #2034 both added bullets); resolved by keeping both entries. Stage merge otherwise clean.

[v0.51.39] — 2026-05-10 — Release O (4-PR contributor batch — Railway docker fix + Stop-button race + provider resolver + live context tracking)

Fixed

• PR #2017 by @michael-dg — docker_init.bash failed on user-namespaced rootless container runtimes (Railway). In-container UID 0 maps to a host UID outside the writable subuid range, so save_env /tmp/hermeswebui_root_env.txt failed with Permission denied even though id -u returns 0. The existing read-only-rootfs guard at :192-197 only covered /etc/group / /etc/passwd writability and didn't catch this signature. Adds a writability probe before save_env and a fallback chain (${itdir}/hermeswebui_root_env.txt → /app/.hermeswebui_root_env); exports _HW_ROOT_ENV_PATH so the post-su phase finds the same file. State-dir verifier left intact (silent degradation there would mask real volume-permission misconfig). Closes #2010.

• PR #2018 by @rhelmer — Stop button didn't refresh after /api/chat/start returned a stream_id. The client became busy before it had a new stream id, updated the send button at that moment, but never updated again once the id arrived — so the Stop button only fixed itself when something else triggered a refresh (e.g. the user typing). Now refreshes when the new stream id is received and again when an old activeStreamId is cleared, so the button doesn't lie about whether stop/cancel is valid. Includes regression coverage in tests/test_1062_busy_input_modes.py.

• PR #2022 by @Michaelyklam — resolve_model_provider() in api/config.py checked custom_providers[] first, so when the configured default model also appeared in a custom provider entry, the request routed to custom:<name> instead of the explicit active provider. Users hit confusing 401/auth errors from a provider they didn't intend to use (#1922). The narrow fix skips custom-provider shadowing only for the configured default model when the active provider is an explicit non-custom provider. Existing custom-provider routing for explicitly selected custom-models and slash-containing endpoint model IDs is preserved. Regression tests added for ai-gateway and xiaomi overlap cases. Closes #1922.

Added

• PR #2009 by @dobby-d-elf — Live context-window tracking during streaming. Two gaps closed in the WebUI context indicator:

  • Updates during tool calls. Token usage and context length were previously updated only after a full response completed; the indicator now receives live usage events mid-stream while tools are executing, so users see real-time consumption instead of stale numbers. Server emits _live_usage_snapshot() payloads during tool execution; frontend merges them via _syncCtxIndicator(). Tracks input tokens, output tokens, estimated cost, context length, threshold tokens, and last prompt tokens.
  • Reset on new sessions. _syncCtxIndicator() is now called from newSession() so the indicator starts from the fresh session's reading instead of carrying stale values from the previous conversation.

  Live metering events are tagged with the real WebUI session_id so the frontend session filter accepts them. Token-driven metering events include the live usage payload to keep the indicator moving while the agent is actively streaming. Reused cached agents refresh tool_start_callback and tool_complete_callback so live tracking continues after the first turn in a session.

Tests

5066+ → 5071+ passing, 0 regressions (+5 net new across test_1062_busy_input_modes.py, test_model_resolver.py, test_issue1617_tps_message_header.py). Full suite under 160s on Python 3.11 with HERMES_HOME isolation.

Notes

• 4 PRs from 4 different authors. static/messages.js was the only multi-PR file (#2009 + #2018), with disjoint hunks at lines ~1159 and ~210/244/261 respectively. api/streaming.py only touched by #2009. Stage merge clean with no conflicts.

[v0.51.38] — 2026-05-10 — Release N (UI polish — toast + mobile + diff renderer + sidebar)

Fixed

• PR #1988 by @Michaelyklam — Auto-compression toast lifetime increased so the user sees the boundary summary long enough to register what happened. Auto-compression rewrites session context, so its completion toast carries more trust weight than a generic "settings saved" notification. Per #1834 Option A — the smallest safe slice. Adds regression coverage.

• PR #2007 by @insecurejezza — Wrap markdown code blocks on mobile instead of forcing horizontal scrolling. Desktop behavior unchanged. Includes Prism token spans, preview markdown, and diff line spans in the mobile wrapping rules. Regression coverage in test_mobile_markdown_wrapping.py.

• PR #2008 by @franksong2702 — CLI session patch diff rendering. Historical CLI sessions that predate session-level tool_calls reconstruct tool cards from per-message metadata in static/ui.js; that fallback truncated tool results to 200 chars and only showed the first 120 chars of tool arguments, so apply_patch/edit diffs recorded with verbosity=all could disappear behind a generic Success result. The renderer now preserves diff-like tool outputs, promotes apply_patch/edit payloads into the tool-card snippet when the result is non-diff, and labels long diff expanders as Show diff. 245-line regression test (test_issue1824_cli_patch_diff_rendering.py) covers both the API payload preservation and the renderer fallback. Closes #1824.

• PR #2013 by @ai-ag2026 — Avoid sidebar jumps when the active session is already visible. Previously the virtualized session sidebar always re-anchored on the active row, which produced a jump even when the row was inside the current window. Now only re-anchors when the active row is outside the rendered window. Regression coverage in test_issue500_session_list_virtualization.py.

Tests

5049 → 5057 collected, 5057 passing, 0 regressions (+8 net new). Full suite 154s on Python 3.11 with HERMES_HOME isolation.

[v0.51.37] — 2026-05-10 — Release M (compression / lineage backend)

Fixed

• PR #2004 by @franksong2702 — Persisted compression boundary summary for reload UI. Both manual /session/compress and auto-compression paths now persist compression_anchor_summary, compression_anchor_visible_idx, and compression_anchor_message_key so the compression card renders correctly after a page reload. Closes #1833.

• PR #2006 by @qxxaa — Stamp profile on continuation session after context compression. In multi-profile deployments, memory writes after auto-compression silently targeted the default profile's MEMORY.md, regardless of which profile the browser session was using. Root cause: the compression migration block in _periodic_checkpoint did not carry s.profile across to the continuation session, so subsequent requests fell back to the default profile's HERMES_HOME. Fix resolves the profile name from s.profile (or get_active_profile_name() while TLS still holds) at streaming-thread start, then stamps s.profile = _resolved_profile_name on the continuation session. Verified evidence: session 0dfefb had read the wrong profile's MEMORY.md (16% / 4 entries) instead of the troubleshooting profile's bank (72-77% / 5000+ chars).

• PR #2011 by @ai-ag2026 — Sidebar lineage collapse: prefer the latest compressed segment when a parent row is touched. Previously the sidebar collapse helper picked representatives by timestamp only, which could surface a touched-parent row instead of the newer compressed tip. Now keys on _compression_segment_count so the highest-count segment wins. Regression test added.

• PR #2014 by @ai-ag2026 — Keep explicit /api/session/branch forks out of compression-lineage collapse. Forked sessions now mark session_source="fork" on creation, and the sidebar lineage helper guards against folding fork rows into the compression-collapse path even when the parent isn't currently in the rendered window. Backend marker test + sidebar guard test added.

• PR #2015 by @Jellypowered — Stitch continuation-lineage transcripts in WebUI. Sessions split by continuation events (compression boundary, CLI-close) could show only the latest segment in the WebUI message history. get_cli_session_messages() now walks the valid continuation lineage and stitches messages across sessions so the full conversation is visible.

Added

• PR #2012 by @dso2ng — New read-only /api/session/lineage-report/<sid> endpoint exposing a bounded JSON diagnostic of a session's compression/branching lineage. Pure backend probe — no client UI changes. The sidebar lineage UI (#1906/#1943) already covers user-facing affordances; this fills the bounded backend probe gap for CLI/scripting use.

Tests

5049 → 5058 collected, 5058 passing, 0 regressions (+9 net new across test_session_lineage_collapse.py, test_session_lineage_full_transcript.py, test_session_lineage_report.py, test_465_session_branching.py, test_auto_compression_card.py, test_sprint46.py). Full suite 157s on Python 3.11 with HERMES_HOME isolation.

Notes

• api/routes.py (4 PRs touched it) and api/streaming.py (2 PRs) were the multi-PR files. All hunks at distinct anchors; stage merge clean with no conflicts.
• Theme coherence: every PR in this batch addresses session compression, lineage, or continuation-stitching — the same conceptual surface from different angles.

[v0.51.36] — 2026-05-10 — Release L (locale + provider + cross-cutting)

Fixed

• PR #1992 by @29n — ctl.sh line 42 used [[ -v ${key} ]], which requires bash 4.2+. macOS ships with bash 3.2 → conditional binary operator expected error. Replaced with [[ -n "${!key+x}" ]] — a portable variable-set check that works on bash 3.2+, zsh, and POSIX-compatible shells. No behavior change.

• PR #1998 by @franksong2702 — Localized /goal runtime status strings. Added 13 i18n keys (goal_evaluating_progress, goal_working_toward, goal_continuing_toast, goal_status_*, goal_set/paused/resumed/cleared/no_goal, goal_achieved, goal_paused_budget_exhausted, goal_continuing) across all locales; new keys reach static/messages.js and static/commands.js so the goal UI no longer hardcodes English. Closes #1933.

• PR #2000 by @qxxaa — Skill tools resolve from the wrong profile after per-request profile switch. tools/skills_tool.py and tools/skill_manager_tool.py cache HERMES_HOME as a module-level constant at import time. The process-wide switch_profile() path patches both modules via _set_hermes_home(), but the per-request path (switch_profile(process_wide=False), introduced in #1700) only updated os.environ['HERMES_HOME'] and skipped the module patching. Result: agents on non-default profiles always saw the root profile's skills. Fix adds the same monkeypatching to the per-request branch in api/streaming.py. Closes the parity gap with #1700.

• PR #2001 by @franksong2702 — clarify.timeout config was ignored by WebUI clarify prompts. The callback used a hardcoded timeout = 120. Now reads clarify.timeout from api.config.get_config() with bounded fallback (defaults to 120 on missing/invalid config), and threads timeout_seconds into the api.clarify.submit_pending payload so the frontend countdown matches the backend timeout. Regression test in tests/test_sprint42.py. Closes #1999.

• PR #2005 by @vikarag — Added Xiaomi as a first-class provider in the WebUI's model catalog. hermes-agent already registered Xiaomi (verified at hermes_cli/models.py:782 + auth entries) but api/config.py was missing the corresponding _PROVIDER_DISPLAY / _PROVIDER_ALIASES / _PROVIDER_MODELS entries, so the provider list showed Xiaomi as Unsupported and the model dropdown fell back to OpenRouter. Adds xiaomi display name, mimo/xiaomi-mimo aliases, and 5 MiMo models (V2.5 Pro/V2.5/V2 Pro/V2 Omni/V2 Flash).

i18n

• PR #2002 by @eov128 — Refreshed Simplified Chinese (zh) translation. Two kinds of changes:

  • Decoded \uXXXX escape sequences to literal CJK characters in already-translated strings (semantically identical at runtime; improves source readability and grep-ability)
  • Translated 30+ previously-untranslated strings tagged // TODO: translate — covering MCP server status (mcp_status_active, mcp_status_configured, ...), MCP tools panel, session toolsets, workspace hidden files, terminal pane, and personality switch hint

  Stage 330 conflict resolution: #1998 added new goal_* English keys interleaved with the cmd_interrupt block that #2002 was rewriting; resolved by preserving #1998's new English keys (TODO: translate) above the section while taking #2002's CJK literals for cmd_* / settings_* keys.

  Stage 330 test fix: tests/test_chinese_locale.py::test_chinese_locale_includes_representative_translations was pinned to the source-encoded \uXXXX form for settings_title and login_title. Broadened to accept either \uXXXX or literal CJK (same runtime behavior). Other source-form assertions in this test were already on literal CJK.

Tests

5049 → 5049 collected, 5049 passing, 0 regressions (one PR added new tests in test_kanban_ui_static.py already counted in stage 329; stage 330 net is flat). Full suite 158s on Python 3.11 with HERMES_HOME isolation.

Notes

• api/streaming.py was the high-collision file (4 PRs touched it: #1998 #2000 #2001 #2006-not-in-this-stage). Stage merge clean; #2000 and #2001 each added separate ~17-LOC blocks at distinct anchor points, no overlap.
• All 6 PRs from 6 different authors except for #1998+#2001 (both @franksong2702). Disjoint themes.

[v0.51.35] — 2026-05-10 — Release K (kanban polish + i18n DE pluralization)

Fixed

• PR #1990 by @franksong2702 — Kanban dispatcher race guard. Adds _kanbanIsDispatching flag around runKanbanDispatcher() and nudgeKanbanDispatcher() in static/panels.js; both Run/Preview buttons go disabled while the call is in-flight, so a fast double-click can't fire the dispatcher twice (which would post duplicate POSTs and surface duplicate toasts). Re-enables on success or error in finally. Closes #1984.

• PR #1991 by @franksong2702 — German profile_skill_count pluralization. The DE locale had profile_skill_count: '{count} Fähigkeiten' as a literal string with the placeholder token still in it (so 1, 2, 5 skills all rendered as {count} Fähigkeiten). Switched to the same (count) => … interpolation function form already used by the other locales. Regression test tests/test_issue1989_profile_skill_count.py pins DE to function form and asserts the literal token never reaches the rendered string. Closes #1989.

• PR #1993 by @franksong2702 — Kanban assignee-dropdown profile cache invalidation. _kanbanProfileNamesCache was populated lazily on first modal open and never expired; creating or deleting a profile elsewhere in the UI didn't refresh it, so the assignee dropdown could show a freshly-deleted profile or miss a freshly-created one. Added a 30-second TTL (_kanbanProfileNamesCacheAt + _KANBAN_PROFILE_NAMES_CACHE_TTL_MS) and an explicit _invalidateKanbanProfileCache() helper called from saveProfileForm(), deleteCurrentProfile(), and deleteProfile(). Closes #1985.

• PR #1995 by @franksong2702 — Kanban modal focus trap + edit-mode status hint. Two related fixes bundled (#1995 was rebased on top of #1994 in the contributor's branch):

  • Focus trap (#1974). Tab/Shift-Tab in the Kanban task and board modals could move keyboard focus to controls behind the modal. Added a shared _trapModalFocus(modalEl) helper in static/panels.js; wired into openKanbanCreate(), openKanbanEdit(), openKanbanCreateBoard(), and openKanbanRenameBoard(). Cleanup tracker _kanbanTaskModalFocusCleanup removes the trap on close so a sequence of open→close→open doesn't leak listeners.
  • Status hint (#1986). When opening Edit on a task whose real status is running/blocked/done/archived (which the dropdown displays as triage because the dispatcher only writes to triage/todo/ready), the modal now shows an inline hint explaining the displayed-vs-real mismatch. The dropdown behaviour is unchanged — only an additional UX cue. New CSS for .kanban-status-hint, new i18n key kanban_status_hint_real across all 8 locales.

  Closes #1974, #1986.

• PR #1996 by @franksong2702 — Kanban modal locale parity regression test. Adds tests/test_kanban_ui_static.py::test_kanban_modal_locales_have_full_modal_vocabulary that anchors on the existing kanban_no_comments key and asserts every locale supporting Kanban has the modal vocabulary. Hardens locale-block parsing to handle quoted locales. Pure test addition.

Tests

5049 → 5054 collected, 5054 passing, 0 regressions (+5 net new). Full suite 154s on Python 3.11 with HERMES_HOME isolation.

Stage augmentation

• 9242305a — Opus advisor flagged that kanban_status_original_hint (added by #1995) was missing in the zh-Hant block, so Traditional Chinese users would get the English fallback. Added the Traditional Chinese translation (實際狀態：{0}。此對話框僅支援編輯 Triage/Todo/Ready。) at line 6537 and extended tests/test_kanban_ui_static.py::test_kanban_modal_locales_have_full_modal_vocabulary's modal_keys list to assert the key — so any future kanban modal key added without zh-Hant translation will fail CI.

Notes

• static/panels.js was the high-collision file in this batch (5 PRs touched it). Stage merge cleanly; one syntactic conflict at the _kanbanProfileNamesCache declaration block when #1995 landed on top of #1993 — both PRs added new module-level let declarations adjacent to _kanbanProfileNamesCache. Resolved by preserving both declaration blocks (the variables are independent).
• Six PRs in batch, all from @franksong2702. Disjoint concerns, disjoint i18n keys, disjoint tests. The 5-files panels.js overlap was the only nontrivial integration risk and resolved cleanly.

[v0.51.34] — 2026-05-09 — Release J (kanban edit/dispatch + zh-Hant kanban i18n)

Added

• PR #1981 by @nesquena-hermes — Three connected Kanban-UX fixes that were load-bearing for the actual work-queue lifecycle:

  • Edit task — new .kanban-edit-btn on the detail-view header opens the existing #kanbanTaskModal pre-filled from a fresh server fetch. Submit branches POST→PATCH for edit mode. Backend already supported _patch_task at api/kanban_bridge.py:338-424; pure UI gap closed.
  • Run dispatcher — new runKanbanDispatcher() posts /api/kanban/dispatch WITHOUT dry_run=1 after a showConfirmDialog. Two UI surfaces: lightning-bolt button in the board header and primary "Run dispatcher" button in the sidebar bulk bar. _kanbanFormatDispatchResult() produces concrete summaries (Dispatched: 1 spawned, 2 skipped (no assignee)) instead of a generic OK toast. Existing nudgeKanbanDispatcher() preserved as the dry-run preview path.
  • Assignee dropdown — <input list> → <select> populated from /api/profiles (Hermes profile names) + historical board assignees (under <optgroup label="Other">) + explicit "— Unassigned (won't auto-run) —" option. Helper text under the field explains the dispatcher claim contract. Soft warning if the user picks Ready + Unassigned (proceeds on second submit).

  Side effect: default new-task status changed from triage → ready so the dispatcher actually picks up newly created tasks without an extra status change. Improvements to .kanban-modal-error styling benefit the existing create-board modal too.

  Stage-328 hotfix per nesquena's pre-merge review: caught a destructive edit-mode regression — opening Edit on a running/blocked/done/archived task and saving without changing the status would silently demote the task to triage (because _kanbanEditableStatusFor() maps non-editable originals to 'triage' for the dropdown display, and submitKanbanTaskModal() was unconditionally including the dropdown value in the PATCH payload). Fixed in commit 8e0eedd1 by introducing a module-scoped _kanbanTaskModalInitialDisplayedStatus tracker that records the dropdown value at modal open; the submit path only includes status when the user has actually changed it from the displayed value. Added tests/test_kanban_ui_static.py::test_kanban_edit_mode_preserves_status_when_dropdown_untouched pinning the invariant.

  19 new i18n keys × 8 locales = 152 entries (zh-Hant added in stage augmentation, see below). 4 new regression tests.

  Closes #1982.

Fixed

• PR #1979 by @Michaelyklam — Backfilled the previously-empty zh-Hant kanban locale block in static/i18n.js. The Traditional Chinese locale never had Kanban keys at all, so Traditional Chinese users saw English fallbacks for every Kanban label since the panel shipped. Now zh-Hant has 68 kanban keys at parity with the other 7 supported locales (en/ja/ru/es/de/zh/pt/ko). Closes #1972.

  Stage augmentation (3fbecc48): when #1981 added 17 NEW kanban keys for the edit/run/assignee work, those went into the 8 existing kanban-supporting locales but missed zh-Hant again (since #1981 was authored before #1979 landed). Stage-328 added a maintainer commit backfilling the 17 new keys into zh-Hant with Traditional Chinese translations adapted from the Simplified Chinese (zh) versions. Result: every locale now has the same 85 kanban keys — zero gap.

Tests

5043 → 5049 collected, 5049 passing, 0 regressions (+6 net new from #1981's 4 + nesquena's status-preservation regression + the augmentation parity guard). Full suite ~145 s on Python 3.11 (HERMES_HOME isolated). One known-flake (test_parallel_session_switch.py::TestGitInfoParallel::test_parallel_faster_than_serial — timing benchmark that re-passes 3/3 in isolation, see existing flake history).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 5049 passed, 8 skipped, 1 xfailed, 2 xpassed in 145.20 s; one timing-flake re-passes in isolation.
• JS syntax check (node -c) clean on static/i18n.js + static/panels.js (the 2 modified static files).
• Conflict-marker scan: clean.
• Silent-revert check: per-file additions match between contributor branches and stage HEAD.
• Independent reviews: nesquena APPROVED on #1981 with end-to-end audit; #1979 qualifies for self-review per project policy (i18n.js only, CI green on 3.11/3.12/3.13).
• Opus advisor: SHIP-WITH-FIXES (all required code-correctness items pass; the "fixes" were CHANGELOG entries to add — applied here).

Follow-up items filed (non-blocking)

Three nice-to-have polish items called out by Opus that don't block this release:

• _kanbanIsDispatching flag to disable the Run/Preview buttons during in-flight POST (current double-click path is benign — atomic claim_task server-side prevents destructive double-spawn — but produces a "0 spawned" second toast).

• Profile-cache invalidation hook for _kanbanProfileNamesCache so profile create/delete from elsewhere in the WebUI propagates without a reload. Current behavior is graceful degradation (orphaned-profile assignee → dispatcher logs skipped_nonspawnable, user can re-edit).

• Status-display hint near the modal status <select> for non-editable original states (running/blocked/done/archived → mapped to triage in the dropdown). The tracker fix makes untouched-submit harmless, but a small visual hint like "(real status: running)" would reduce user confusion.

• bug(profile/mcp): non-default profile MCP servers never load (#1968). _run_agent_streaming called discover_mcp_tools() ~100 lines BEFORE the per-session os.environ['HERMES_HOME'] = _profile_home mutation, so MCP discovery always read the default profile's ~/.hermes/config.yaml regardless of which profile the session was stamped with. Result: switching profiles in the WebUI dropdown was effectively cosmetic for MCP — non-default profiles never registered their stdio (npx/node) MCP servers. Fix relocates the discover_mcp_tools() call past the _ENV_LOCK env-mutation block so get_hermes_home() resolves to the session's actual profile home. Adds 4 static regression tests (tests/test_issue1968_mcp_profile_discovery.py) pinning the call ordering, lock-release placement, single call site, and try/except wrapping. Caveat (out of scope, agent-side): _servers in tools/mcp_tool.py is a process-global dict keyed only by server name, so concurrent use of multiple non-default profiles in the same WebUI process still has a "first profile wins per name" issue. Fully fixing that requires keying _servers by (profile_home, name) upstream in hermes-agent. This PR ships layer 1 only.

[v0.51.31] — 2026-05-09 — Release H (12-PR contributor batch: image-mode + race fixes + composer drafts + locale parity)

Added

• PR #1956 by @JKJameson — Persistent composer draft. The chat composer textarea (#msg) is now persisted per-session server-side under Session.composer_draft = {text, files}, so drafts survive page refreshes and sync across clients. New POST/GET /api/session/draft endpoints (input validation: text clamped to 50 KB, files clamped to 50 entries, types coerced to str/list — Stage-326 hardening per Opus advisor). Frontend: 400 ms debounced auto-save on textarea input, immediate fire-and-forget save before session switch, save on clarification card lock. _restoreComposerDraft guards against stale responses from rapid session switching. Co-authored by Minimax.

• PR #1957 by @hermes-gimmethebeans — Configurable session TTL. New _resolve_session_ttl() helper with three-layer precedence: HERMES_WEBUI_SESSION_TTL env var > settings.json session_ttl_seconds > 30-day default. Out-of-range values [60s, 1y] fall through to the default. Resolved dynamically at every create_session() and set_auth_cookie() call so settings changes take effect immediately without restart. The SESSION_TTL = 86400 * 30 module constant is preserved as the named fallback (Stage-326 reconciliation: existing regression tests pin the constant; #1957 originally deleted it). Closes #1954.

Fixed

• PR #1939 by @ai-ag2026 — Test-only follow-up: tightens the theme-color bridge tests so the pre-paint script must update every theme-color meta tag and remove stale media attributes; asserts the runtime theme sync updates both the canonical id tag and fallback theme-color tags; adds regression coverage that service-worker shell assets use network-first with cache fallback.

• PR #1941 by @ai-ag2026 — Preserve chat scroll across final render. When a stream completed, the done handler replaced the live transcript with persisted session messages via renderMessages({ preserveScroll: true }). The preserveScroll path avoided forcing bottom-scroll, but did not preserve scrollTop itself; during the DOM rebuild the browser could reset #messages.scrollTop to 0, sending a reader who had scrolled up to the first message. Now captures the scroll position before the rebuild and restores it for unpinned readers; pinned/near-bottom readers keep the existing bottom-follow behavior.

• PR #1945 by @franksong2702 — Localized the six session-jump-button keys (Start/End labels, aria labels, Appearance setting copy) for ja/ru/es/de/zh/zh-Hant/pt/ko. The opt-in session_jump_buttons setting in #1928 (Release G) had English fallbacks in non-English locale blocks; this completes the parity. Strengthened the regression test so future changes cannot leave English literals in non-English locales. Closes #1938.

• PR #1947 by @happy5318 — Show the same model from different named custom providers in the dropdown instead of silently dropping the second provider's entry. The _seen_custom_ids global bucket in get_available_models() was seeded from auto_detected_models and used a bare model id as the dedup key, so a second named provider exposing the same model id (e.g. both baidu and huoshan exposing glm-5.1) had its entry dropped. Switched the dedup key to f"{slug}:{model_id}" so each provider's models track independently. Maintainer-augmented with a regression test (test_pr1947_same_model_multiple_custom_providers.py) that fails on master and passes on the fix. Co-authored by @hacker1e7 (independently filed #1874 with broader scope; closed in favor of the narrower fix).

• PR #1949 by @Sanjays2402 — Closes the v0.51.30 regression race between endless-scroll prefetch and Start-jump's _ensureAllMessagesLoaded (Issue #1937). With both opt-ins ON, an in-flight _loadOlderMessages racing with jumpToSessionStart → _ensureAllMessagesLoaded could prepend a duplicate page if the prefetch resolved last. The naive same-flag-check approach (proposed in #1942 and #1962, both closed in favor of this PR) is a no-op for the post-await race because the prefetch has already cleared the entry-gate. The actual fix is a generation-token + mutex pair: (1) _loadOlderMessages snapshots a module-scoped _messagesGeneration counter before its await api(...) and re-checks it after, aborting the prepend cleanly if any wholesale-replace bumped the token mid-flight; (2) _ensureAllMessagesLoaded claims the _loadingOlder mutex, bumps the generation token before mutating S.messages, yields until any in-flight prefetch's finally releases the mutex, then claims the mutex itself. Also adds same-session and _loadingSessionId guards that the original ensure-all body was missing post-await. 12 new regression tests pin the wait → lock → fetch → mutate → unlock invariant. Co-authored by @franksong2702 and @Michaelyklam (parallel-discovery PRs). Closes #1937.

• PR #1950 by @franksong2702 — Mute stale stopped gateway heartbeat. When the root gateway_state.json had gateway_state == "stopped" and was older than the freshness threshold, the existing logic still treated it as a configured-but-down gateway, surfacing a persistent heartbeat-down alert for users running only profile-scoped gateways. New stale-stopped helper in api/agent_health.py reports alive: null with reason gateway_stale_stopped_state instead of alive: false. Fresh stopped states still report down (so a recently stopped configured root gateway continues to surface as an outage), and stale gateway_state == "running" still reports down (preserving the #1879 false-positive guard). Closes #1944.

• PR #1951 by @amlyczz — Gate the goal evaluation hook on goal-related turns only (Issue #1932). Pre-fix, evaluate_goal_after_turn() fired on every completed assistant turn when a goal was active, including unrelated user messages — burning the goal budget, triggering continuation prompts that interrupted unrelated conversations, and making /goal status numbers misleading. Added STREAM_GOAL_RELATED (dict) + PENDING_GOAL_CONTINUATION (set) flags in api.config; _run_agent_streaming accepts a goal_related=False kwarg and skips the goal evaluation section when not goal-related; goal_continue adds the session to PENDING_GOAL_CONTINUATION so the next stream is auto-marked; routes propagate the flag and the /api/goal kickoff path passes goal_related=True. Co-authored by @franksong2702 (parallel #1946 closed in favor of this PR's broader test coverage). Closes #1932. Stage-326 hotfix per Opus advisor: removed PENDING_GOAL_CONTINUATION.discard(session_id) from the streaming worker's finally block — that race-erased the marker before the consumer in routes.py could read it; the consumer already discards atomically on read. 5 new regression guards pin the corrected ordering.

• PR #1953 by @lucky-yonug — Skip the #1776 provider-peel for custom host:port slugs. model_with_provider_context can emit @custom:<host>:<port>:<model> when the model provider is derived from an OpenAI base_url authority (e.g. custom:10.8.0.1:8080). The existing colon-count heuristic mistook those extra colons for an over-split model id and prepended the port segment onto the bare model (8080:Qwen3-235B), breaking WebUI while CLI/curl stayed correct. Now detects endpoint-style slugs (IPv4 / localhost / dotted-hostname + numeric port) and skips the peel in that case. References #1776.

• PR #1960 by @Michaelyklam — Translate the workspace_show_hidden_files label for ja/ru/es/de/zh/zh-Hant/pt/ko, replacing the English fallbacks in seven non-English locales. Closes #1841.

• PR #1961 by @sbe27 — WebUI now respects image_input_mode instead of unconditionally embedding native image_url parts. _build_native_multimodal_message() was bypassing the agent's image_input_mode config, causing silent turn failures with non-vision models or text-only fallbacks. Added _resolve_image_input_mode(cfg) mirroring decide_image_input_mode() and wired into the multimodal message builder; when mode resolves to "text", returns a plain string so vision_analyze handles images instead. Closes #1959.

Cluster-resolution decisions

Three duplicate-PR clusters consolidated to one canonical PR each, with Co-authored-by attribution preserved on the merge commit:

• #1937 race — three competing fixes filed within 24h: #1942 (synchronous mutex), #1949 (generation-token + mutex), #1962 (serialization + browser evidence). Selected #1949 as the canonical fix; the synchronous-mutex approach in #1942/#1962 doesn't reach into a prefetch's resolved callback once it's past the entry-gate. Browser evidence under docs/pr-media/1937/ was not absorbed (the fix in stage covers what the evidence demonstrates).

• #1932 goal hook — same-shape fixes in #1946 and #1951. Selected #1951 for the materially better test coverage (10 dedicated regression tests vs handful in #1946); both PRs ship the goal_related flag through /api/chat/start → streaming worker.

• Custom-provider dedup — #1874 (broad scope including a behavior change to _deduplicate_model_ids) vs #1947 (4-LOC minimum-correct fix). Selected #1947; #1874's _deduplicate_model_ids change can be revisited as a separate PR if the underlying gap is real.

Stage-326 fixes applied per Opus advisor

• CRITICAL #1951 PENDING_GOAL_CONTINUATION race fix. The original PR's finally-block discard at api/streaming.py:3553 race-erased the marker before the frontend's SSE-receive → POST /api/chat/start round-trip could consume it. Removed the discard; the consumer in routes.py discards atomically on read. 5 new regression guards in tests/test_stage326_pending_goal_continuation_race.py pin the corrected ordering.

• #1956 composer-draft input validation. Added size + type clamps (text 50 KB max str-coerce, files 50 entries max list-coerce) to the POST /api/session/draft handler. Without this, a misbehaving client could persist multi-MB strings into the session JSON via the 400 ms debounced auto-save. 5 new validation tests in tests/test_stage326_composer_draft_validation.py.

• #1957 SESSION_TTL constant preserved. The original PR deleted the SESSION_TTL = 86400 * 30 module constant; existing regression tests (test_v050258_opus_followups::test_redirect_session_ttl_30_days, test_auth_sessions::test_session_ttl_is_24_hours) pin it as a guard against the daily-kick-out regression from #1419. Restored as the named fallback for _resolve_session_ttl(). Reconciled the new TestSessionTtlResolution class to use unittest setUp/tearDown env snapshotting rather than the pytest monkeypatch fixture (incompatible with unittest.TestCase subclasses) and aligned clamp tests with the actual fall-through-to-default behavior.

Tests

5006 → 5028 collected, 5028 passing, 0 regressions (+51 net new across the 12 PRs + 10 stage-326 hardening tests). Full suite ~143 s on Python 3.11 (HERMES_HOME isolated). JS syntax check (node -c) clean on all 5 modified static/*.js files. Browser API sanity harness (port 8789): all 11 endpoints + 20 QA tests PASS. Manual live verification on stage-326 server (port 8789): composer-draft validation working (50 KB clamp, 50-entry files clamp, type coercion); session TTL resolution honors env var (3600 s) and falls through on out-of-range. Opus advisor: SHIP-WITH-FIXES (all required + recommended fixes applied in 404e24ac + 8782fd26 stage commits).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 5028 passed, 8 skipped, 1 xfailed, 2 xpassed, 1 warning, 8 subtests passed in 142.61 s.
• Browser API harness against port 8789: all 11 endpoints + 20 QA tests PASS (111.19 s).
• Manual live verification on stage-326 server (port 8789): composer-draft API + TTL resolution + custom-provider model groups all behave as expected.
• node -c on all 5 modified static/*.js files: clean.
• py_compile on all 6 modified api/*.py files: clean.
• No leftover merge-conflict markers anywhere in the tree (companion tests/test_pwa_manifest_sw.py regression check + grep sweep).
• Stage diff: 28 files, +1609/-116.
• Opus advisor pass: VERDICT=SHIP-WITH-FIXES with all critical + recommended fixes now applied. Re-verified on the patched stage HEAD.
• Pre-stamp re-fetch of all 12 PR heads: no contributor force-push during the build window.

Closed in favor of canonical PRs (with Co-authored-by attribution)

• #1942 (franksong2702 — synchronous mutex for #1937) → closed in favor of #1949
• #1962 (Michaelyklam — serialization + browser evidence for #1937) → closed in favor of #1949
• #1946 (franksong2702 — goal_related flag for #1932) → closed in favor of #1951
• #1874 (hacker1e7 — broader custom-provider dedup) → closed in favor of #1947's 4-LOC fix
• #1311 (lost9999 — codex cache invalidation; superseded on master)

[v0.51.30] — 2026-05-08 — 3-PR contributor batch (Release G: offline recovery + PWA hardening + opt-in session jump buttons + opt-in endless-scroll)

Added (3 PRs, all from @ai-ag2026)

• PR #1891 — Browser offline recovery and PWA cache hardening. Adds an offline/recovery banner that probes /health and auto-refreshes when Hermes is reachable again. Defers stream error handling while the browser is offline so reconnecting does not immediately surface a terminal chat error. Makes service-worker shell assets network-first with cache fallback (so local hotfixes are not hidden behind stale cached JS/CSS), while preserving offline-launch capability via install pre-caching of SHELL_ASSETS. Keeps PWA/native chrome colors aligned with the dark Hermes background. Stream-error deferral only triggers when the banner is visible OR navigator.onLine===false — so Hermes-up + browser-online flows errors through normally; no swallowed auth errors. Supersedes the recovery/PWA portion of #1888.

• PR #1928 — Opt-in session Start/End jump buttons (session_jump_buttons setting, default OFF). Adds an Appearance setting that surfaces a sticky Start pill (loads full history and jumps to beginning) and expands the existing scroll-to-bottom button into an End pill. Localized text, tooltip, and aria labels for the jump controls. The opt-in default keeps the existing UI unchanged for users who don't want the floating pills.

• PR #1929 — Opt-in session endless-scroll (session_endless_scroll setting, default OFF). Adds automatic prefetching of older transcript pages while scrolling upward (1.5x viewport prefetch window). Builds on #1927's viewport-preservation fix (shipped in v0.51.29) so prepended pages have scroll runway and don't jump. Replaces the previous auto-trigger-at-scrollTop<80 behavior — when the setting is OFF, users get the manual "Load earlier" button path (_wireMessageWindowLoadEarlierButton).

Conflict resolution applied during stage merge

#1928 and #1929 both touch static/ui.js, static/i18n.js, static/index.html, static/panels.js, api/config.py. Mechanical conflicts (both add new settings keys / locale entries / HTML toggles / accessor branches) were resolved by keeping both — the features are independent opt-in toggles. The static/ui.js scroll-listener conflict required an intent-based resolution: #1929 INTENTIONALLY replaces the el.scrollTop<80 auto-trigger block with the gated prefetch block, so the old block was removed. Test tests/test_session_endless_scroll.py::test_scroll_listener_prefetches_older_messages_only_when_enabled enforces this. CHANGELOG conflicts auto-resolved during rebase (took ours strategy).

Tests

4960 → 4977 collected, 4977 passing, 0 regressions (+17 net new). Full suite ~140s on Python 3.11 (HERMES_HOME isolated). JS syntax check (node -c) clean on all 6 modified static/*.js files. Browser API sanity harness (port 8789): all 11 endpoints + 20 QA tests PASS. Manual browser verification on stage-325 server (port 8789): both new settings toggles render in the Settings panel; window._isSessionEndlessScrollEnabled() correctly reflects toggle state; _updateSessionStartJumpButton function is exposed; offline-banner template + "Check now" button present in HTML. Opus advisor: SHIP-WITH-FIXES (one tracked race fast-follow + one i18n polish fast-follow, both non-blockers per Opus's own recommendation "Ship the batch").

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4977 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 140.56s.
• Browser API harness against stage-325 on port 8789: all 11 endpoints + 20 QA tests PASS (111.35s for QA phase).
• Manual browser verification: stage-325 server up on 8789, navigated to /, verified new toggles render in Settings panel, verified helper functions exposed correctly, verified offline-banner template loaded.
• node -c on all 6 modified static/*.js files: clean.
• Stage diff: 16 files, +649/-30.
• Opus advisor pass on stage-325 brief: VERDICT=SHIP-WITH-FIXES with explicit "Ship the batch" recommendation. Two fast-follows filed for tracking, neither is blocking.
• v0.51.29 carry-overs verified preserved (no in-batch changes to _strip_workspace_prefix, evaluate_goal_after_turn, _profiles_match, mcp_server.py).
• Pre-stamp re-fetch of all 3 PR heads: no contributor force-push during Opus window.

Follow-up items filed (non-blocking)

• Race between endless-scroll prefetch and Start-jump's _ensureAllMessagesLoaded — with both opt-ins ON, an in-flight prefetch (started by 1.5x-viewport trigger) racing with jumpToSessionStart → _ensureAllMessagesLoaded could produce duplicate messages if the prefetch resolves last. Narrow window, but the fix is to gate _ensureAllMessagesLoaded on the existing _loadingOlder flag. Resolved in Unreleased — see #1937 entry above; final fix uses generation-token + mutex rather than the originally-suggested flag gate, which would not have closed the race.
• #1928 locale parity — session_jump_* and settings_*_session_jump_buttons keys are English literals in ja/ru/es/de/zh/zh-Hant/pt/ko. Default-OFF + English fallback works, but breaks the locale-parity standard set by #1929 and #1891 in the same release.

Added (1 PR)

• PR #1919 by @franksong2702 — Persist login rate limit attempts (closes #1910). Stores failed-login buckets in STATE_DIR/.login_attempts.json instead of in-process memory, so password-auth deployments keep the same failed-attempt window across restarts. Atomic temp+rename writes, 0600 permissions, prunes expired entries on load. If the file is missing, malformed, or unwritable, the auth path falls back to current in-memory behavior with debug-level logging — no infinite-loop risk.

Fixed (5 PRs)

• PR #1920 by @franksong2702 — Remove dead kanban_card_start i18n key. PR #1886 removed the Kanban card-level Start action (direct running transitions are now owned by the dispatcher), but the kanban_card_start locale key was left present in every locale block. Removed across all 9 locales and strengthened the Kanban static regression test so the dead key cannot be reintroduced.

• PR #1921 by @Michaelyklam — Production Docker image hardening (closes #1908). Removes passwordless sudo path, drops the hermeswebuitoo sudo-capable staging user, and reworks docker_init.bash so privileged setup runs in an explicit root init block before re-execing as the hermeswebui user without sudo. Init scratch state now uses owner-only permissions (umask 0077, 0700 directory, 0600 files). Added docs/docker.md with production-image security model notes. A shell gained through the WebUI runtime no longer has a passwordless sudo path to root inside the production container.

• PR #1926 by @ai-ag2026 — Prevent chat scroll resets after final render. The final-render path could write/rebuild DOM, queue native scroll events, and then lose the explicit bottom pin before delayed layout growth settled. Separately, clicking the already-open session still ran the loadSession() teardown/setup path. Fix: keep explicit bottom scroll pins stable across renderMessages({preserveScroll: true}) and late Markdown/layout growth, and make clicking the currently-active sidebar session a no-op before loadSession() mutates state.

• PR #1927 by @ai-ag2026 — Preserve viewport when loading older messages. Pre-fix, prepending older history could snap the viewport to the bottom or surface only a larger hidden-count marker. Fix: expand transcript render window before rendering newly fetched older messages, then anchor at the current viewport instead of snapping. Adds focused regression coverage for older-history viewport anchoring.

• PR #1930 by @ai-ag2026 — Collapse stale compression sidebar segments. The sidebar collapse key treated any row whose parent_session_id pointed at another visible row as a non-collapsible child/fork row — correct for subagent/fork sessions, but wrong for automatic compression continuations that already carry _lineage_root_id/lineage_root_id and should collapse by lineage even when stale optimistic parent segments are still locally visible. Fix: prefer explicit lineage metadata before the visible-parent guard.

Tests

4947 → 4960 collected, 4960 passing, 0 regressions (+13 net new). Full suite ~145s on Python 3.11 (HERMES_HOME isolated). JS syntax check (node -c) clean on static/i18n.js, static/sessions.js, static/ui.js. Browser API sanity harness (port 8789): all 11 endpoints + 20 QA tests PASS. Opus advisor pass: SHIP-READY (only flag was a #1919 CHANGELOG conflict already auto-resolved during stage rebase).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4960 passed, 11 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 145.24s.
• Browser API harness against stage-324 on port 8789: all 11 endpoints + 20 QA tests PASS (110.90s for QA phase).
• node -c on all 3 modified static/*.js files: clean.
• Stage diff: 18 files, +588/-150.
• Opus advisor pass on stage-324 brief: VERDICT=SHIP-WITH-FIXES (single fix: #1919 CHANGELOG rebase — already auto-resolved during stage merge). Coexistence verified for #1926/#1927/#1930 sharing static/sessions.js (different functions, scroll-pin and viewport-anchor cannot fight; lineage metadata degrades gracefully on legacy sessions).
• v0.51.28 carry-overs verified preserved (no in-batch changes to api/routes.py:_strip_workspace_prefix, api/streaming.py:evaluate_goal_after_turn, api/profiles.py:_profiles_match, tests/test_mcp_server.py module-restoration logic).
• Pre-stamp re-fetch of all 6 PR heads: no contributor force-push during Opus window.

Added (2 PRs)

• PR #1895 by @samuelgudi — MCP server Option A rewrite (#1616). Replaces the fragile MCP integration with a clean mcp_server.py (567 LOC) implementing project CRUD, session listing, and session mutations (rename/move) over Hermes's HTTP API. Imports api.models / api.profiles canonically rather than carrying duplicate slug-matching helpers. Relocates _profiles_match from api/routes.py into api/profiles.py as the single source of truth (mcp_server.py and api/routes.py both now import the canonical helper — re-introducing a local copy in either module trips a parity test immediately). Adds env-aware WEBUI_URL (HERMES_WEBUI_HOST / HERMES_WEBUI_PORT). New behaviour: delete_project REFUSES to touch session JSONs when HERMES_WEBUI_PASSWORD is unset, returning {ok:true, unassigned_sessions:0, warning:"…"} instead — preventing data-loss when an MCP client tries to delete a project on an unauthenticated server. 53-test coverage in tests/test_mcp_server.py (914 LOC) including HTTP wire-format integration tests, profile-scoped isolation, legacy untagged row visibility, and --profile foo CLI ordering regression. Closes #1616.

• PR #1866 by @Michaelyklam — WebUI /goal command for goal-tracking with budget enforcement and continuation prompts. New api/goals.py (489 LOC) implements goal lifecycle (set / pause / resume / clear / status), per-profile SQLite SessionDB cache, and evaluate_goal_after_turn() SSE hook that emits goal and goal_continue events from api/streaming.py after assistant turns. Wire-up: api/routes.py adds /api/goal endpoint (POST set/pause/resume/clear, GET status) and _start_chat_stream_for_session() extraction so kickoff prompts can run through the canonical streaming path; static/commands.js adds /goal autocomplete (cmdGoal handler) with i18n description; static/messages.js handles new SSE event types with continuation-toast UI; static/i18n.js adds 9 new strings across all locales. 4 documentation screenshots added under docs/pr-media/{1866,1808}/. Closes #1808.

Mid-stage absorbed fixes (test isolation, per blocker investigation)

• #1857 polluter root-cause — tests/test_issue1857_usage_overwrite.py was using mock.patch.dict(sys.modules, {...}), which DELETES any keys added during the patched scope on __exit__. That silently evicted lazily-imported pydantic submodules (e.g. pydantic.root_model), producing KeyError: 'pydantic.root_model' in test_mcp_server.py downstream when the full pytest suite ran. Fixed by replacing with manual save/restore using a _MISSING sentinel.
• #1895 module-attribute restoration — tests/test_mcp_server.py mutates module-level constants on api.config/api.models/mcp_server (STATE_DIR, SESSION_DIR, PROJECTS_FILE, …) so the MCP server reads from a tmpdir. Without restoration, downstream tests (test_pytest_state_isolation, test_provider_quota_status, test_provider_management) read deleted tmpdirs from api.config.STATE_DIR. Fixed by snapshotting originals on first _reimport_mcp() call and restoring in _cleanup_state_dir().
• #1895 _profiles_match parity test parent-attribute leak — test_profiles_match_single_source_of_truth pops api.routes/api.profiles from sys.modules and re-imports for the canonical-helper identity check. When restoring sys.modules only, fresh modules still leaked through because import api.routes as r resolves via sys.modules['api'].routes (parent-package attribute), NOT via sys.modules['api.routes'] directly. Fixed by ALSO restoring parent-package attributes — without this, sibling tests (test_plugins_panel, test_pr1350_sse_notify_correctness, test_version_badge) that patch api.routes.j and call handlers via import api.routes as routes would fail because the patch hits one module object and the handler reads from another.

Tests

4898 → 4947 collected, 4947 passing, 0 regressions (+49 net new). Full suite ~140s on Python 3.11 (HERMES_HOME isolated). JS syntax check (node -c) clean on static/commands.js, static/i18n.js, static/messages.js. Browser API sanity harness (port 8789): all 11 endpoints + 20 QA tests PASS. Opus advisor pass: SHIP-READY, no blockers (2 follow-up items filed: goal hook firing on unrelated turns; English-only runtime strings in goal UI).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4947 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 140.41s.
• Browser API harness against stage-323 on port 8789: all 11 endpoints + 20 QA tests PASS (110.66s for QA phase).
• node -c on all 3 modified static/*.js files: clean.
• Stage diff: 16 files, +2692/-105.
• Opus advisor pass on stage-323 brief: VERDICT=SHIP-READY. No coexistence bugs between #1895 and #1866 (disjoint hunks in routes.py, SSE event names align, _profiles_match resolution unambiguous either way, no path collisions).
• v0.51.27 fixes verified preserved: _strip_workspace_prefix (callers at routes.py:1446/1485), on_interim_assistant (streaming.py:2120), _max_iterations_cfg (streaming.py:2331-2410), if input_tokens > 0: guard (streaming.py:2933).
• Pre-stamp re-fetch of #1866 (sha f2aacf4) + #1895 (sha 766c91e): both MERGEABLE, no force-push during Opus window.

Follow-up items (filed for next sweep)

• Goal hook fires on unrelated turns — while a goal is active, every completed assistant turn runs evaluate_goal_after_turn and ticks state.turns_used += 1, even on user messages unrelated to the goal. UX surprise but not bug-broken; consider gating on user_initiated or a goal-context flag.
• English-only runtime strings in goal UI — messages.js:889 ("Evaluating goal progress…"), commands.js:651 ("Working toward goal…"), messages.js:914 ("Continuing toward goal…" toast); also backend strings in goals.py (status_line, "⊙ Goal set …", "⏸ Goal paused …", "↻ Continuing …"). The cmd_goal autocomplete description IS localized across all 9 locales — only the runtime status strings are missed.

Fixed (4 PRs)

• PR #1916 by @Michaelyklam — Make Kanban detail view scrollable. The app shell sets body { overflow: hidden }, so the Kanban main view must own vertical scrolling. Pre-fix, a selected task with a long body could push the board below the viewport with no way to reach it. Fix: add overflow-y: auto to main.main.showing-kanban > #mainKanban (one CSS property + regression test). Closes #1915.

• PR #1914 by @ai-ag2026 — Keep streaming chat pinned after final render. During streaming, bottom-pinned scroll worked, but after the done event late Markdown layout growth could unpin the viewport — the user would see the last token, then suddenly the chat would scroll up by hundreds of pixels as render reflowed. Fix: add explicit upward-intent gating (MESSAGE_UPWARD_INTENT_MS=450 ms window for wheel/touch events) so passive scrollTop decreases from windowing/reflow no longer count as user upward intent. Pre-replacement shouldFollowOnDone capture in static/messages.js calls scrollToBottom() if pin or near-bottom (<=1200px) was true before render. scrollIfPinned and scrollToBottom now write _lastScrollTop and clear the programmatic flag in a rAF so the next listener pass doesn't see a synthetic upward delta.

• PR #1918 by @franksong2702 — Fix workspace prefix sentinel handling (closes #1913 follow-up filed in v0.51.25). The pre-fix strip regex ^\s*\[Workspace:[^\]]+\]\s* was too permissive — a user prompt starting with [Workspace: /path/to/explain] would be silently eaten, and workspace paths containing ] would truncate at the first ]. Fix introduces a versioned sentinel format [Workspace::v1: ...] (double-colon distinguishes from natural English) AND escapes ] in the path with \]. New helpers: _workspace_context_prefix(path), _escape_workspace_prefix_path(path), and _strip_workspace_prefix(text, *, include_legacy=False) with optional legacy fallback for transcript-compaction identity matching during the migration window. Closes #1913.

  Mid-stage absorbed fixes (per Opus advisor on stage-322):

  1. #1918 missed second injection site at api/routes.py:6689 (_handle_chat_sync, the POST /api/chat synchronous handler). Without this fix, the sync chat path would still inject legacy [Workspace: ...] while the streaming path injected [Workspace::v1: ...] — producing user bubbles that visibly leak the prefix on the sync surface, and a system-prompt format string that no longer matches reality. Maintainer routed the sync injection through _workspace_context_prefix(...) and updated the surrounding system-prompt text to v1 form, mirroring the streaming.py block.
  2. #1918 backwards-compat gap in static/ui.js:_stripWorkspaceDisplayPrefix — existing on-disk transcripts saved before the v1 migration still carry the legacy format. Without a JS legacy fallback, pre-upgrade sessions would render the literal [Workspace: /tmp/proj] prefix in user bubbles after upgrade. Maintainer added a legacy-regex fallback paralleling the Python include_legacy=True branch on the streaming side; updated the regression test that previously asserted the legacy regex was absent.

• PR #1814 by @hualong1009 — Custom named provider API key resolution. Adds new top-level helper resolve_custom_provider_connection(provider_id) -> (api_key, base_url) that resolves custom:* provider IDs to credentials from config.yaml > custom_providers[]. Supports api_key as literal value, ${ENV_VAR} interpolation, or key_env env-var hint. Uses get_config() snapshot (per-profile aware). Fallback to single-entry custom_providers when slug doesn't match exactly. Also adds fallback in api/streaming.py self-heal paths so an agent rebuild after a transient failure can re-fetch credentials. Deferral re-evaluated (per prior sweep notes): the prior maintainer-review flag noted feared overlap with #1818, but #1818 already shipped (v0.51.19) with its slug-matching helpers. Re-checking against current master post-#1818: the new resolve_custom_provider_connection() is purely additive (no helper duplication). Style observation (non-blocking): PR's local _slugify has slightly different normalization (_ → -, collapse --, strip leading/trailing -) than master's canonical _custom_provider_slug_from_name. Internally self-consistent (both pid and entry name go through the same local slugify before comparison) so it works for matching, but a follow-up could unify the slug semantics. The 6-call-site fallback pattern (3 in api/routes.py, 3 in api/streaming.py) is also a candidate for a single apply_custom_provider_fallback() helper.

Tests

4890 → 4898 collected, 4884 passing, 0 regressions (+8 net new). Full suite ~145s on Python 3.11 (HERMES_HOME isolated). JS syntax check (node -c) passes on static/messages.js and static/ui.js. Browser API sanity harness (port 8789) all-green: 11 endpoints + 20 QA tests verified. Opus advisor pass: 2 BLOCKERS identified and fixed in-stage (per absorb-in-release default), then SHIP.

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4884 passed, 11 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 145.18s.
• Browser API harness against stage-322 on port 8789: all 11 endpoints + 20 QA tests PASS.
• node -c on static/messages.js, static/ui.js: clean.
• Stage diff: 13 files, +348/-22 (pre-Opus-fix); 14 files, +382/-31 (post-Opus-fix incorporating the routes.py legacy-injection fix and ui.js legacy-fallback fix).
• Opus advisor pass on stage-322 brief: identified 2 BLOCKERS in PR #1918 (missed routes.py injection site + missing JS legacy fallback). Both absorbed in-stage per absorb-in-release default. Test that asserted "legacy regex absent" updated to assert legacy regex IS present (mirrors Python include_legacy=True branch).
• v0.51.26 fixes verified preserved across rebase: _strip_workspace_prefix (10), on_interim_assistant (2), _max_iterations_cfg (9), if input_tokens > 0: (1), get_default_hermes_root (3), _sessionSegmentCount (9), _active_skills_dir (6).
• Pre-stamp re-fetch of all 4 PR heads: no contributor force-pushes during the Opus window.

Opus-applied fixes (absorbed in-release)

From stage-322 absorption:

1. #1918 second injection site — api/routes.py:_handle_chat_sync was injecting legacy [Workspace: ...] and telling the agent that's the active format. Fixed: routed through _workspace_context_prefix(str(s.workspace)); updated surrounding system-prompt strings to reference [Workspace::v1: ...] consistently.

2. #1918 JS legacy fallback — static/ui.js:_stripWorkspaceDisplayPrefix was changed to v1-only regex with no legacy fallback. Fixed: added fallthrough to legacy regex when v1 strip doesn't match, mirroring the Python include_legacy=True branch. Updated test test_workspace_display_prefix_helper_strips_leading_metadata_only to assert the legacy regex IS present (was inverted to assert it was absent).

[v0.51.26] — 2026-05-08 — 5-PR follow-on contributor batch (Release D: profile-isolation hardening across cache + skills + gateway-health, context-length config-override threading, sidebar segment count UI polish)

Fixed (5 PRs + 1 absorbed test)

• PR #1901 by @Michaelyklam — Use root-level Hermes home for gateway health status. Hermes gateway runtime state (gateway.pid, gateway_state.json) is a root-level singleton shared across all profiles, but WebUI under a profile-scoped HERMES_HOME was looking inside the profile's home directory — always missing the canonical files. Fix: resolve gateway PID path through get_default_hermes_root() (which correctly handles the <root>/profiles/<name> case by walking up to the un-profiled root). Standard ~/.hermes and Docker /opt/data layouts both work. Graceful degradation when bundled hermes-agent isn't available (try/except returns None, falls through to pre-fix read_runtime_status() / get_running_pid() calls — preserves WebUI-only installs). Closes #1878.

• PR #1906 by @dso2ng (first-time contributor) — Sidebar UI polish: show collapsed session segment count. The sidebar already collapses continuation/compression lineage rows and carries _lineage_collapsed_count / _lineage_segments metadata. Backend can also expose _compression_segment_count even when the full segment list isn't materialized client-side. Pre-fix the UI showed one compact row without making it clear that it represented multiple collapsed segments. Adds _sessionSegmentCount(s) helper picking the largest available count, i18n session_meta_segments keys for 9 locales (en/es/de/zh/zh-Hant/ru/ja/pt/ko), and a threshold-of->1 rendering check that suppresses single-segment cases. Empty-array case (Math.max(0, ...[]) = 0) gracefully falls through to omitting the badge.

• PR #1903 by @Michaelyklam — Scope skills endpoints to active profile. The Skills tab was using Hermes Agent's startup-time SKILLS_DIR, so switching browser profiles via the hermes_profile cookie did not change which local skills were listed or edited. Fix: resolve get_active_hermes_home() / "skills" at request time across list/content/save/delete endpoints (api/routes.py), without mutating process-wide state. Per-request resolution is microsecond-scale (TLS attribute lookup + path concat, no filesystem I/O). Net security improvement: _handle_skill_delete now validates skill_name for / and .. before rglob. Closes #1880.

• PR #1898 by @nesquena-hermes (production fix) + functional test from PR #1904 by @Michaelyklam — Same-session profile switches were silently reusing the cached AIAgent from the previous profile. The agent's _cached_system_prompt (built from load_soul_md() at construction time) is sourced from HERMES_HOME — so when a user switched personas mid-session, the second turn carried the first profile's SOUL.md and any other profile-scoped context. Reported by @AvidFuturist in Discord (May 8 2026): two custom personas, mid-session switch, second turn loaded the wrong identity. Fix: append _profile_home (already resolved at line 1958, well before the signature blob at line ~2399) to the SESSION_AGENT_CACHE signature blob with or '' fallback for empty-HERMES_HOME deployments. Profile switches now produce a different signature, force a cache miss, and rebuild the agent under the new profile's HERMES_HOME. Test absorption (Co-authored-by: Michael Lam): replaced #1898's source-string-only test with @Michaelyklam's superior functional regression from PR #1904 — creates two synthetic profile homes with distinct SOUL.md contents, runs _run_agent_streaming() three times on the same session (profile A, profile A, profile B), and asserts prompts_used_for_runs == [ALPHA, ALPHA, BETA]. Kept the source-string ordering checks (_profile_home resolved before signature, or '' fallback) since the functional test alone wouldn't catch ordering regressions. Closes #1897.

• PR #1900 by @nesquena-hermes — The two get_model_context_length() fallback callsites in api/streaming.py (one for session persistence ~L2950, one for the SSE usage payload ~L3050) were calling the resolver with only model + base_url, omitting config_context_length, provider, and custom_providers. When the agent's context_compressor reports 0 (fresh / cached / transitioning agent), context-length resolution falls all the way through to DEFAULT_FALLBACK_CONTEXT = 256_000 even when the user has set model.context_length: 1048576 in config.yaml or has a 1M model with a custom_providers per-model override. For users with a context-management plugin, this cascades into a session-killing failure mode: auto-compression triggers far too early → flood of compress requests → 429s → credential pool exhaustion → fallback also 429s → "API call failed after 3 retries". Reported by @AvidFuturist in Discord with deepseek-v4-flash (1M context window). Reproduced 5×. Fix: thread config_context_length=_cfg_ctx_len (parsed from _cfg.get('model', {}).get('context_length') with safe int validation), provider=resolved_provider or '', and custom_providers=_cfg_custom_providers through both fallback callsites. The bundled hermes-agent's resolver consults these in Step 0 ("Explicit config override — user knows best") before any probing, so a user-set context_length always wins over the 256K default. Both callsites wrapped in try/except TypeError for back-compat with users who pin hermes-agent to a pre-kwargs version (dead-code-defensive in production deployments running the bundled agent — kept as a safety net for mismatched-version installs). Closes #1896.

Tests

4872 → 4890 collected, 4879 passing, 0 regressions (+18 net new). Full suite ~136s on Python 3.11. JS syntax check (node -c) passes on both modified .js files. Browser API sanity harness (port 8789) all-green: 11 endpoints + 20 QA tests verified. Opus advisor pass: SHIP with three release-note call-outs, none blocking.

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4879 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 136.03s.
• Browser API harness against stage-321 on port 8789: all 11 checks PASS + 20 QA security/regression tests PASS.
• node -c on static/i18n.js, static/sessions.js: clean.
• Stage diff: 13 files, +1220/-32.
• Opus advisor pass on stage-321 brief: SHIP. All 5 PRs verified correct with test coverage solid. Three call-outs incorporated above (#1901 helper name corrected, #1898+#1904 combo retained, #1900 legacy fallback documented).
• v0.51.25 fixes verified preserved across rebase: _strip_workspace_prefix (×3), on_interim_assistant (×2), _max_iterations_cfg (×6), if input_tokens > 0: Opus defensive guard (×1).
• Pre-stamp re-fetch of all 6 PR heads (incl. #1904 absorbed): no contributor force-pushes during the Opus window.

Notes for users

• #1900 mismatched-version safety net: WebUI v0.51.26 paired with a pre-kwargs hermes-agent (one that doesn't yet support config_context_length / custom_providers kwargs on get_model_context_length()) will exercise the legacy 2-arg fallback. Users running the bundled agent take the new fast path and never touch the fallback.
• #1905 closed as superseded — Michaelyklam filed a parallel-iteration take on #1896 with a slightly different shape (factored helper vs inline kwargs). Closed without merge per the same-author parallel-iteration pattern; #1900's review history was further along.

[v0.51.25] — 2026-05-08 — 6-PR streaming/runtime contributor batch (Release C: profile-isolated quota probes, request wedge diagnostics, max_turns config honor, per-turn usage overwrite, interim_assistant SSE wiring, workspace-prefix transcript dedup)

Fixed (6 PRs)

• PR #1873 by @franksong2702 — Subprocess-based profile isolation for quota fetches. The original #1831 attempt added per-profile locks but CI exposed that approach as unsafe — cron_profile_context_for_home() mutates process-global os.environ['HERMES_HOME'] and cron module globals. Per-profile locks would let different profile homes enter concurrently and one thread could observe another profile's home. This rework spawns subprocess workers (one per profile) that run quota probes in their own process with their own env vars, communicating results back via JSON over stdout. Eliminates the env-mutation race entirely. Closes #1831. Operational follow-up filed: worker-pool refactor + prctl(PR_SET_PDEATHSIG) + BoundedSemaphore concurrency cap before this hits busy multi-profile installs (current synchronous-spawn-per-probe is correct but inefficient under load).

• PR #1860 by @franksong2702 — Targeted slow-request diagnostics for the two #1855 paths (POST /api/chat/start + GET /api/sessions). Adds a lightweight RequestDiagnostics watchdog that only starts for those two paths. If a request is still running after the configured threshold, it logs a structured warning with request id, method, path, start time, elapsed time, current stage, accumulated stage timings, and Python thread stack snapshots. Completed requests that exceed the same threshold also log their stage timings (without thread stacks). Does NOT alter locking or request semantics — pure observability slice. _diag_stage() is a no-op shim when diag=None (the 99% path), so per-request overhead is near-zero. Refs #1855.

• PR #1877 by @Michaelyklam — Read agent.max_turns config when constructing WebUI streaming AIAgent instances. Pass the parsed positive value as max_iterations when the installed agent supports it ('max_iterations' in _agent_params gating, same pattern as max_tokens/reasoning_config). Include the parsed budget in the per-session agent cache signature so budget changes rebuild cached agents instead of reusing stale instances. Closes #1876.

• PR #1861 by @franksong2702 — Session usage counters (input_tokens, output_tokens, estimated_cost) were being accumulated on every completed turn. Because prompt tokens represent the full current context (which already contains all prior turns), accumulation double-counts and inflates long-session usage. Fix: store the most recent turn's values rather than the cumulative sum. Defensive in-stage absorption (per Opus advisor on stage-320): added > 0 / is not None guards before overwriting s.input_tokens / s.output_tokens / s.estimated_cost so a rebuilt-from-cache-miss agent (post-restart, post-LRU-eviction) doesn't zero out persisted disk totals on its next turn. Closes #1857.

• PR #1865 by @franksong2702 — Wire runtime's interim_assistant_callback contract through the WebUI SSE stream. Pre-fix, the runtime emitted user-visible interim assistant commentary (e.g. "I'll inspect the workspace files now.") via the callback contract on AIAgent, but WebUI's SSE stream had no event path for it and the messages were swallowed. Fix: forward the callback through to put('interim_assistant', {'text': visible, 'already_streamed': bool}) SSE events; frontend renders them as separate-but-non-tool live segments. The already_streamed flag tells the renderer not to duplicate text already emitted via token events (Codex-style backends). Single-purpose PR after the contributor split out earlier scope creep into separate PRs (#1869 / #1870 / #1871 / #1873).

• PR #1889 by @ai-ag2026 — WebUI sends model-facing [Workspace: ...] prefix to user prompts; transcript compaction was treating the prefixed and unprefixed forms as different turns and creating adjacent duplicate user bubbles. Fix: strip workspace prefix during current-user identity matching so context-compaction merges don't duplicate. The visible bubble's display content gets cleaned of the prefix during compaction merge — a desirable side effect. Refs #1217. Follow-up filed: consider distinguishing-sentinel format ([Workspace::v1: ...] or nonce) so user-typed [Workspace: ...] text isn't silently eaten; also handle workspace paths containing ]. Pre-existing behavior in master (api/streaming.py:1054 already used the same regex), this PR extends the same convention.

Tests

4858 → 4872 collected, 4861 passing, 0 regressions (+14 net new). Full suite ~145s on Python 3.11. JS syntax check (node -c) passes on static/messages.js. Browser API sanity harness (port 8789) all-green: 11 endpoints verified. Opus advisor pass: SHIP with three Medium-severity follow-ups (one absorbed in-release, two filed for follow-up PRs).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4861 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 145.96s.
• Browser API harness against stage-320 on port 8789: all 11 checks PASS.
• node -c on static/messages.js: clean.
• Stage diff: 13 files, +1216/-196 (heavy in tests).
• Opus advisor pass on stage-320 brief: SHIP with three Medium-severity concerns (one absorbed in-release: #1861 restart-zeros-totals defensive guard; two filed as follow-ups: #1873 worker-pool ops refactor, #1889 sentinel/nonce regex tightening).
• Pre-stamp re-fetch of all 6 PR heads: no contributor force-pushes during the Opus window.

Opus-applied fixes (absorbed in-release)

From stage-320 absorption (this release):

• #1861 restart-zeros-totals defensive guard. Opus identified that the new per-turn overwrite at api/streaming.py:2925-2927 would zero out s.input_tokens / s.output_tokens / s.estimated_cost on the first turn after a WebUI restart or LRU cache eviction (the rebuilt agent's session_* running totals start at zero and would overwrite the persisted disk values). Added > 0 / is not None guards before each overwrite. Test still passes; the guard preserves PR #1861's intended fix while preventing the restart-induced regression. <10 LOC, clearly defensive.

[v0.51.24] — 2026-05-08 — 5-PR contributor batch (Release B: local-server custom-provider model preservation, oversized upload preflight, ai-gateway phantom Custom group fix, Kanban lifecycle controls, cross-container gateway liveness)

Fixed (5 PRs)

• PR #1862 by @franksong2702 — Recognize custom:<local-server> provider ids as local model server providers (Ollama, LM Studio, vLLM, Tabby) and preserve full slashed model ids on non-loopback hosts. Pre-fix, slashed model ids from non-loopback Ollama instances were stripped because _is_local_server_provider() did not unwrap custom: prefixes. Now: explicit set membership check across the standard local-server provider slugs (lmstudio, lm-studio, ollama, llamacpp, llama-cpp, vllm, tabby, tabbyapi, koboldcpp, textgen, localai). Note: renamed local-server providers (custom:my-vllm-prod) on non-private hostnames are still handled via the existing _base_url_points_at_local_server() LAN/loopback fallback; a follow-up could thread the configured kind/provider field for full coverage. Closes #1830.

• PR #1868 by @franksong2702 — Add browser-side upload size preflight check matching the server's 20 MB limit. Pre-fix, Firefox would attempt a 182 MB multipart upload and surface NS_ERROR_NET_RESET / NetworkError to the user instead of the server's clean 413 JSON. Now: static/ui.js checks file size before starting upload and surfaces a clear error message in the user's locale via static/i18n.js. Closes #1867.

• PR #1883 by @Sanjays2402 — Two cooperating bugs in get_available_models() produced a phantom Custom group when the active provider was ai-gateway with custom_providers declared in config.yaml. (1) custom:* PIDs not in _named_custom_groups were dropped at the wrong stage, leaving entries that should have been pre-filtered to slip through. (2) The fallback Custom group was synthesized for any leftover entries, including auto-detected ai-gateway models that weren't supposed to be in the Custom group at all. Fix scopes both checks correctly. Cross-talk between fix paths verified to be impossible (the two fixes operate on disjoint PID shapes). Closes #1881.

• PR #1886 by @franksong2702 — Three Kanban UI lifecycle improvements: (1) remove Kanban card Start and bulk Running controls (PATCH-task-to-running was unsafe — bypassed dispatcher claim flow). (2) Rename dispatcher dry-run action from "Nudge dispatcher" to "Preview dispatcher" so the UI matches what /api/kanban/dispatch?dry_run=1 actually does. (3) Add empty-board guidance (kanban_work_queue_hint) framing the Kanban panel as the Hermes Agent work queue. Mid-stage maintainer notes: PR was based against pre-v0.51.23 master, so during stage rebase the maintainer (a) resolved the CHANGELOG.md conflict (accept master), (b) merged the Kanban i18n additions with #1863's Japanese refresh (Japanese hint translated; other locales fall back to English to match existing kanban_* fallback pattern), and (c) restored two silent reverts from #1886's stale-base diff: #1872's static/index.html workspace-heading change (no role=button/tabindex) and #1871's static/panels.js:837 _cronPreFormDetail reference. Both restorations verified by Opus advisor against post-merge master. Co-authored-by trailer preserves Frank Song's authorship. Closes #1885.

• PR #1887 by @Sanjays2402 — Cross-container gateway liveness via state-file freshness fallback. gateway/status.py:get_running_pid() walks two PID-namespace-scoped checks (file lock via fcntl.flock(LOCK_EX | LOCK_NB) on gateway.lock, and /proc/<pid> access checks). Both fail across container boundaries — WebUI in container A can't see the gateway in container B even when both share a writable volume. Adds a state-file freshness fallback: if the canonical lock+pid checks fail but the gateway's gateway.json was updated within the last 120s (two cron ticks), treat the gateway as alive. Implementation note: parses the embedded updated_at ISO-8601 string from inside the JSON content (more robust against NFS lazy mtime updates than os.path.getmtime()). Tolerates clock skew up to 120s in the future, rejects naive timestamps, requires gateway_state == "running" in the file (prevents trusting cleanup-skipped crashes). Closes #1879.

Tests

4830 → 4858 collected, 4847 passing, 0 regressions (+28 net new). Full suite ~143s on Python 3.11. JS syntax check (node -c) passes on all 3 modified .js files. Browser API sanity harness (port 8789) all-green: 11 endpoints verified. Opus advisor pass: SHIP with two follow-up flags, neither blocking.

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4847 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 142.86s.
• Browser API harness against stage-319 on port 8789: all 11 checks PASS.
• node -c on static/i18n.js, static/panels.js, static/ui.js: clean.
• Stage diff: 11 files, +849/-43.
• Opus advisor pass on stage-319 brief: SHIP with one minor follow-up (#1862 narrow gap on renamed local-server provider non-private hostnames). No MUST-FIX.
• Pre-stamp re-fetch of all 5 PR heads: no contributor force-pushes during the Opus window. Stage commits match contributor heads.
• Mid-stage edits applied (test failures from #1886's stale-base reverts of #1871 + #1872): both fix-restorations re-applied surgically, full pytest re-run clean post-fix.

[v0.51.23] — 2026-05-08 — 7-PR contributor batch (Release A: stale-cleanup pending-turn preservation, title refresh marker persistence, Japanese i18n refresh, Kanban predicate hardening, cron edit snapshot fix, workspace heading affordance polish)

Fixed (7 PRs)

• PR #1856 by @ai-ag2026 — Materialize a pending user turn before stale stream cleanup clears runtime fields. Prior to this fix, when _clear_stale_streams() ran while a session had a pending user turn (assistant hadn't started responding yet), the cleanup path cleared runtime fields including the pending turn's metadata — turn lost. Fix: materialize the pending turn into the saved transcript before the cleanup, preserving timestamp + attachments. Dedup via _materialize_pending_user_turn_before_error() scans the last 8 messages so retries can't produce duplicate-on-disk. New regression coverage in tests/test_issue1361_cancel_data_loss.py exercises the stale-cleanup pending-turn path, complementing the existing stream-error coverage.

• PR #1859 by @ai-ag2026 — Persist llm_title_generated marker through Session load/save cycles. _maybe_schedule_title_refresh() only refreshes sessions where session.llm_title_generated == True, but that flag wasn't being included in to_dict/from_dict round-trip — so a WebUI restart silently lost it and the adaptive title refresh logic short-circuited indefinitely. Fix adds the field to the serialization round-trip. Migration note: sessions whose title was LLM-generated pre-fix may incur a one-time title regeneration on their next eligible turn (bounded by still_auto — user-titled or already-good titles are preserved). Regression coverage in tests/test_session_save_mode.py pins both the constructor and disk round-trip behavior.

• PR #1863 by @koshikai — Refresh the Japanese (ja) locale bundle for keys that drifted out of date — onboarding connection probes, MCP-tools section, session_stop_response, and several other recently-added keys. Pure i18n string substitution in static/i18n.js; no logic change. 108 lines added / 108 lines removed (balanced English→Japanese substitution).

• PR #1869 by @franksong2702 — Parametrize the Kanban double-404 regression test across HTTP methods (GET/POST/PATCH/DELETE) where prior coverage exercised only GET. Tests-only PR, defense-in-depth follow-up to PR #1843's double-404 guard fix. Closes #1845.

• PR #1870 by @franksong2702 — Tighten the browser predicate that detects "stale Kanban client" via 404. Pre-fix, the predicate also accepted bare not found 404 messages, which would misclassify future genuine 404s as stale-client. Now requires the explicit Kanban-stale-client server message string. Backward-compat note: old browser tabs running against pre-#1828 servers no longer get the "Hard refresh now" hint for bare-404 cases — they'll see a normal-error path instead. Acceptable since WebUI server and client ship together. Closes #1839.

• PR #1871 by @franksong2702 — Fix saveCronForm() to read no_agent from _cronPreFormDetail (the explicit edit source-of-truth captured at form-open) rather than _currentCronDetail. Two-character source change with matching regression coverage. Closes #1840.

• PR #1872 by @franksong2702 — Disable workspace heading affordance when the session has no registered workspace. Pre-fix, the heading still rendered as a button (cursor-pointer + hover state) even though click and context-menu actions couldn't do useful work. Now: _syncWorkspaceHeadingState() toggles class + role/tabindex/title based on S.session.workspace; CSS scopes hover/focus to .workspace-panel-heading--enabled. Subtle a11y refinement: focus indicator now uses :focus-visible so clicks no longer paint an outline but keyboard tabs still do. Closes #1842.

Tests

4817 → 4830 collected, 4819 passing, 0 regressions (+13 new). Full suite ~150s on Python 3.13 with HERMES_HOME isolated. JS syntax check (node -c) passes on all 3 modified .js files. Browser API sanity harness (port 8789) all-green: 11 endpoints verified (health, static assets, settings, session lifecycle, chat stream).

Pre-release verification

• Full pytest under HERMES_HOME isolation: 4819 passed, 8 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 150.85s.
• Browser API harness (run-browser-tests.sh against stage-318 on port 8789): all 11 checks PASS.
• node -c on static/i18n.js, static/panels.js, static/ui.js: clean.
• Stage diff: 14 files, +251/-124 (production code 251 LOC + tests).
• Opus advisor pass on stage-318 brief: SHIP with two release-note items (incorporated above as "Migration note" on #1859 and "Backward-compat note" on #1870). No MUST-FIX. One non-blocking nit on #1869 (redundant GET/else branch in parametrized test) noted for follow-up.
• Pre-stamp re-fetch of all 7 PR heads: no contributor force-pushes during the Opus window. Stage commits match contributor heads.

[v0.51.22] — 2026-05-07 — 3-PR batch (P0 markdown streaming hotfix + CSP source-map allowance + LaTeX delimiter rendering)

Fixed (3 PRs)

• PR #1851 by @ChaseFlorell — P0 hotfix: ES module import for static/vendor/smd.min.js used a bare specifier (import * as smd from 'static/vendor/smd.min.js') which the HTML spec rejects — relative ES module references must start with /, ./, or ../. Result: the entire <script type="module"> block in static/index.html failed silently, window.smd was never set, and live token-by-token markdown streaming was broken for all users since the streaming-markdown library landed. Fix: change 'static/vendor/smd.min.js' → '/static/vendor/smd.min.js'. 1-LOC change. Browser-verified post-fix: typeof window.smd === 'object' with all expected exports (BLOCKQUOTE, CODE_FENCE, EQUATION_BLOCK, etc.). Closes #1849.

• PR #1852 by @ChaseFlorell — CSP connect-src 'self' blocked DevTools-initiated fetches of source maps for the three xterm.js libraries (xterm@5.3.0, xterm-addon-fit@0.8.0, xterm-addon-web-links@0.9.0) loaded from cdn.jsdelivr.net. The script tags loaded fine (covered by script-src https://cdn.jsdelivr.net), but .js.map files are fetched via connect and got blocked, emitting CSP violation errors in the console whenever DevTools was open. Fix: add https://cdn.jsdelivr.net to connect-src in api/helpers.py:_security_headers(), alongside the existing 'self'. Consistent with the existing jsDelivr allowlist on script-src/style-src/font-src. New regression test test_issue1850_csp_connect_src_jsdelivr.py pins both the new entry and that 'self' is preserved. Closes #1850.

• PR #1848 by @Michaelyklam — Backslash LaTeX delimiters (\[...\] for display, \(...\) for inline) didn't render through the KaTeX pipeline. The renderer already supported $$...$$ / $...$, but the prior regex for \\(...\\) / \\[...\\] required a double backslash, which is the JavaScript-source escape form, not the form LLMs actually emit in chat content. Result: multi-line display math from real assistant output appeared as raw \[ ... \] text with <br> line breaks instead of a centered KaTeX block. Fix in static/ui.js: math-stash regex relaxed to single backslashes, and the user-bubble path (_renderUserFencedBlocks) gets its own pre-escape math stash so backslash delimiters survive esc() instead of being HTML-escaped to \. Test test_backslash_latex_delimiters_render_to_katex_placeholders runs the assistant and user pipelines via Node and asserts no raw delimiter leakage in either rendered output. Closes #1847.

Maintainer-side absorption

• tests/test_streaming_markdown.py + tests/test_subpath_frontend_routes.py — tightened the smd-import-shape assertions to require the ./ relative form and forbid BOTH bare specifier (broken by ES spec, #1849) AND root-absolute (breaks /hermes/ subpath mounts). The original tests only forbade root-absolute, which let the bare-specifier regression land unnoticed in the first place. PR #1851's original fix used the root-absolute form (which would have re-broken subpath deployments); the corrected ./ form satisfies both constraints. Subpath safety verified: new URL('./static/vendor/smd.min.js', 'http://host/hermes/').href === 'http://host/hermes/static/vendor/smd.min.js'.

• static/ui.js + tests/test_issue347.py (commit d703959 by @nesquena, opus-4.7-paired) — fix code-fence-vs-math stash ordering in _renderUserFencedBlocks. PR #1848 added a math stash to the user-bubble path so backslash LaTeX delimiters survive esc() and reach KaTeX, but the math stash ran BEFORE the existing code-fence stash. Result: a user-typed code block containing LaTeX-like syntax (e.g. ```\n\[ a + b \]\n```) had its math content extracted as KaTeX and rendered as a <div class="katex-block"> placeholder INSIDE <pre><code>, replacing the user's literal source with rendered math. The assistant path (renderMd()) had the correct ordering already; the user-bubble path inherited the mistake from the inverted stash order. Fix reorders fences-first, then math, mirroring renderMd(). Two regression tests added: one fails pre-fix and asserts no KaTeX wrappers inside <pre><code>, one is a sibling guard against an over-correction that would disable user-bubble math entirely.

• tests/test_issue1850_csp_connect_src_jsdelivr.py (absorbed from PR #1852 follow-up by @ChaseFlorell) — switched to Path(__file__).resolve().parents[1] rooting so the test survives being run from a non-repo-root cwd. Matches the pattern in test_issue1112_csp_google_fonts.py.

Tests

4810 → 4817 collected (+7). Three from #1848 augmenting test_issue347.py (Node-driven _run_renderers() harness for assistant + user pipelines), two new in test_issue1850_csp_connect_src_jsdelivr.py, two from the d703959 user-bubble code-fence-vs-math ordering fix.

Pre-release verification

• pytest tests/ — green
• Live browser-verified at port 8789 against stage-316:
  • window.smd resolves to streaming-markdown module (PR #1851)
  • Content-Security-Policy: ...connect-src 'self' https://cdn.jsdelivr.net... in served headers (PR #1852)
  • renderMd() produces <div class="katex-block"> for \[...\] and <span class="katex-inline"> for \(...\) with no raw delimiter leakage (PR #1848)

[v0.51.21] — 2026-05-07 — 3-PR batch (P0 hotfix + auto-compression UI + shell route HTML fallback)

Fixed (3 PRs)

• PR #1843 by @nesquena — P0 hotfix: Avoid double-404 response when Kanban bridge already sent error. Fixes a wire-protocol bug shipped in v0.51.20 #1828 where the new _kanban_unknown_endpoint wrapper double-sent a 404 response whenever the inner bridge handler returned None (which happens after bad(...) calls). Result: concatenated JSON bodies on the wire like {"error":"task not found"}{"error":"unknown Kanban endpoint: GET ..."}. Affected every bad(...)-returning path in the bridge — task not-found, ImportError 503, LookupError 404, ValueError 400, RuntimeError 409, plus SSE board-resolution failures.

  Fix: in handle_get/post/patch/delete (4 call sites), only call _kanban_unknown_endpoint when the bridge returned an explicit False (truly unmatched). None means a response was already sent. New regression test test_inner_handler_bad_response_does_not_emit_double_404 monkey-patches _task_log_payload to force bad() and asserts body.count("}{") == 0.

  api/routes.py +20/-12, 25 LOC test added.

• PR #1838 by @Michaelyklam — Show auto-compression running state (closes #1832). Bridges Hermes Agent's lifecycle compression status into a WebUI SSE compressing event so users see context auto-compression as actively running instead of silently waiting through the LLM summarization pause. Three layers:

  • api/streaming.py +27 — new _agent_status_callback(kind, message) closure converts agent lifecycle messages matching 'preflight compression', 'compressing', 'compacting context', or 'context too large' into a put('compressing', {session_id, message}) SSE event. Wired through fresh-agent (_agent_kwargs['status_callback']) and cached-agent reuse (agent.status_callback = ...) paths, both gated on 'status_callback' in _agent_params and hasattr(agent, 'status_callback') for backward compatibility with older agent builds.
  • static/messages.js +18 — new source.addEventListener('compressing', ...) listener mirrors the existing compressed listener's session-active gate (returns early if S.session.session_id !== activeSid AND if d.session_id && d.session_id !== activeSid). Calls setCompressionUi({phase:'running', automatic:true, ...}) when active.
  • tests/test_auto_compression_card.py +50 — three new source-regression tests pinning the listener block, the agent-side bridge predicates, and the listener ordering invariant (compressing must precede compressed so running phase transitions cleanly to done).

• PR #1836 by @Michaelyklam — Keep shell route errors HTML (closes #1835). Defense-in-depth fix for restart/update race where the WebUI shell route /, /index.html, or /session/... could bubble an exception out and render a JSON error page. PR wraps the shell-route block in api/routes.py:handle_get with a narrow try/except Exception, and on failure calls a new _serve_shell_unavailable() that returns a minimal text/html; charset=utf-8 503 page with Cache-Control: no-store. API routes still keep their normal JSON error behavior — only the shell-route block is wrapped. api/routes.py +34, 58 LOC test (test_home_route_internal_error_returns_html_503_not_json monkey-patches _INDEX_HTML_PATH with a broken read, asserts HTML 503 not JSON), 1 PR-media PNG.

Opus-applied fixes (absorbed in-release)

From stage-315 absorption pre-release Opus pass:

• api/kanban_bridge.py — Documented handle_kanban_get/handle_kanban_post/handle_kanban_patch/handle_kanban_delete three-valued return contract. After PR #1843 made the False-vs-None distinction load-bearing for the caller's _kanban_unknown_endpoint decision, the four entry points still declared -> bool while actually returning True | None | False. Updated type annotations to bool | None and added a docstring on handle_kanban_get (with cross-references on the three siblings) so a future contributor adding a new return path can't accidentally produce a 0/'' value that would silently revert the double-404 fix. Per Opus pre-release verdict; production behavior unchanged.

Tests

4805 → 4810 collected (+5). 4799 passed, 8 skipped (sprint3 prong-2 + QA gating + 2 dev-only spawn from v0.51.15), 1 xfailed, 2 xpassed, 0 failed in 148.5s. JS syntax check 1/1 modified file green (node -c static/messages.js). Browser API harness 11/11 endpoints green.

Pre-release verification

• All 3 PRs CI-green individually
• File overlap on api/routes.py between #1843 (Kanban routes) and #1836 (shell route) resolved cleanly via stage-HEAD rebase — disjoint line ranges (~2629/3429/4607/4621 vs ~2496-2535)
• Pre-stamp re-fetch: all 3 PR heads still match local rebases (no mid-sweep force-pushes)
• Opus advisor: SHIP verdict, 1 absorbed in-release (return-type annotation + docstring contract), 1 deferred to follow-up issue (parametrize PR #1843's regression test across GET/POST/PATCH/DELETE for defense-in-depth)
• No file deletions, no merge-conflict markers, no Python/JS syntax errors

Closes #1832, #1835. Hotfix for v0.51.20 #1828 wire-protocol regression.

[v0.51.20] — 2026-05-07 — 5-PR contributor follow-on batch (with parallel-discovery resolution)

Fixed (5 contributor PRs)

• PR #1828 by @Michaelyklam — Surface stale Kanban client recovery (closes #1823). Three coupled fixes for the Kanban unavailable: not found failure mode:

  • Server-side: explicit Kanban-namespace 404 handler for unknown /api/kanban/* GET/POST/PATCH/DELETE endpoints (instead of falling through to bare "not found"), with a hint pointing at stale-cached-bundle as the likely cause.
  • Client-side: new _kanbanLooksLikeStaleClientError predicate + _kanbanUnavailableHtml that swaps the diagnostic for stale-client errors and surfaces a Hard refresh now button. The button calls new hardRefreshWebUIClient() which unregister()s service workers, deletes every Cache-API entry, then window.location.reload()s — gives Mac WKWebView users an in-app escape hatch that doesn't depend on Cmd+Shift+R or DevTools.
  • Board-pointer drift recovery: loadKanban now awaits loadKanbanBoards() BEFORE board-scoped /api/kanban/config requests; loadKanbanBoards clears the saved slug to default when the saved slug doesn't match any current board; /api/kanban/boards server-side falls back to default if the on-disk current-board pointer references an archived/deleted board.
  • api/kanban_bridge.py +12, api/routes.py +29, static/panels.js +47/-3. 92 LOC test coverage across 2 files (test_issue1823_kanban_not_found.py, test_kanban_bridge.py). 1 PR-media diagnostic screenshot.

• PR #1827 by @Michaelyklam — Sync Codex provider card models with picker (follow-up to v0.51.19 #1812). Replaces #1812's pure-live-fetch hook in api/providers.py with a richer live-plus-Codex-cache merge. The agent's provider_model_ids("openai-codex") filters IDs with supported_in_api: false, but Codex CLI still surfaces some of those models in its picker — notably gpt-5.3-codex-spark (#1680). Merging the visible Codex local cache (via existing _read_visible_codex_cache_model_ids helper in api/config.py) keeps the providers card in sync with what the picker actually shows. Uses the existing private helpers _read_live_provider_model_ids, _read_visible_codex_cache_model_ids, _models_from_live_provider_ids from api/config.py (already used by the picker path). 19 net LOC + 50 LOC test (test_provider_management.py::test_openai_codex_provider_card_prefers_live_catalog).

• PR #1826 by @Michaelyklam — Allow no-agent cron edits without prompt (closes #1820). Cron editor now distinguishes agent jobs from no-agent CLI --no-agent --script jobs (which run scripts directly with no prompt). Plumbs no_agent and script from cron detail/edit data into _renderCronForm(). Detail view shows new Mode badge (no-agent / agent) + a "No-agent script" row. Edit form: prompt textarea is disabled, removes required attribute, shows cron_no_agent_prompt_hint styled hint listing the script path. saveCronForm() skips client-side prompt validation for no-agent edits and omits prompt from /api/crons/update payload. static/panels.js +84/-3, 71 LOC test (test_cron_no_agent_edit.py), 1 PR-media screenshot.

• PR #1825 by @ai-ag2026 — Hide workspace file tree cruft by default (closes #1793). WORKSPACE_HIDDEN_FILE_NAMES set + WORKSPACE_HIDDEN_FILE_PREFIXES array filter common cruft (.DS_Store, ._*, Thumbs.db, Desktop.ini, $RECYCLE.BIN, .git, .svn, .hg, node_modules, __pycache__, .pytest_cache, .mypy_cache, .ruff_cache, .tox, .venv, venv, .Trash-*, .AppleDouble, .Spotlight-V100, .Trashes, .fseventsd, .directory). New _visibleWorkspaceEntries() filter applied in renderFileTree and _renderTreeItems recursive rendering. "Show hidden files" checkbox toggle in workspace panel header, persisted via localStorage['hermes-workspace-show-hidden-files']. Filter is purely client-side display — server-returned tree entries unchanged, toggling re-renders without re-fetching. static/i18n.js +9, static/index.html +4, static/style.css +3, static/ui.js +33, 31 LOC test.

• PR #1822 by @ai-ag2026 — Workspace heading root actions (closes #1786). The "Workspace" panel heading was a static label — the breadcrumb's ~ already navigated to root, but the more prominent label didn't. PR makes the heading a role="button" with tabindex="0": click/Enter/Space → loadDir('.'), right-click → context menu with "Reveal in Finder" and "Copy file path" actions. Adds module-level helpers: bindWorkspaceHeadingActions, _workspaceContextMenuItem, _copyTextWithFallback (clipboard API with execCommand fallback), _showWorkspaceRootContextMenu. static/index.html +1/-1, static/style.css +2, static/ui.js +89, 23 LOC test. Sibling-rebased against #1825 in stage; ui.js conflict resolved by concatenating both additive blocks (verified with node -c).

Opus-applied fixes (absorbed in-release)

From stage-314 absorption pre-release Opus pass:

• static/panels.js — Removed duplicate await loadKanbanBoards() tail call in loadKanban(). PR #1828 added a pre-fetch at the start of loadKanban to resolve the active board BEFORE board-scoped requests, but the existing tail-of-function refresh at line 1278 was kept too. Under SSE-driven refreshes (debounced at 250ms via _scheduleKanbanRefresh), this doubled /api/kanban/boards traffic with no behavioral benefit — the 30-second polling interval started by _kanbanStartPolling() already picks up board-state changes that arrive after the render. Per Opus pre-release verdict.

From stage-314 pre-Opus pytest absorb:

• tests/test_issue1807_codex_provider_card_live_models.py — Added CODEX_HOME isolation in _configure_codex helper. v0.51.19's tests didn't isolate the Codex local model cache, but PR #1827's new _read_visible_codex_cache_model_ids() merging makes this load-bearing — without isolation, the dev machine's real ~/.codex/models_cache.json (containing gpt-5.3-codex-spark from #1680) leaks into test output. Test-only fix; production code unchanged. Caught by pre-release pytest gate.

Maintainer triage

• PR #1821 by @ai-ag2026 — Closed as parallel-discovery superseded by #1826. Both PRs filed within hours of each other (Michaelyklam predates by ~3 hours), both correctly diagnosed the bug. Same fix shape (form required removal + validation skip + payload omission), but #1826 covers more surface (Mode badge in detail view, disabled prompt instead of just optional, i18n hint key, screenshot). Closed with structured "superseded" comment crediting the convergent diagnosis — Co-authored-by trailer optional since the fixes are independent, but the convergence is acknowledged in the close comment.

Tests

4790 → 4805 collected (+15). 4794 passed, 8 skipped (sprint3 prong-2 + QA gating + 2 dev-only spawn from v0.51.15), 1 xfailed, 2 xpassed, 0 failed in 156.7s. JS syntax check 3/3 modified files green (node -c on i18n.js, panels.js, ui.js). Browser API harness 11/11 endpoints green.

Pre-release verification

• All 5 PRs CI-green individually
• File overlaps resolved via stage-HEAD rebasing for sibling PRs (#1822 + #1825 both touched static/ui.js after renderBreadcrumb() and adjacent index.html/style.css blocks; conflict in ui.js resolved by concatenation)
• Pre-stamp re-fetch: all 5 PR heads still match local rebases (no mid-sweep force-pushes)
• Opus advisor: SHIP verdict, 1 absorbed in-release (loadKanbanBoards perf cleanup), 4 deferred to follow-up issues (lowercase 404 false-positive, _currentCronDetail vs _cronPreFormDetail robustness, #1825 i18n debt for 7 locales, #1822 heading no-op when no workspace)
• No file deletions, no merge-conflict markers, no Python/JS syntax errors

Closes #1786, #1793, #1820 (via #1826, with #1821 closed as parallel-discovery superseded), #1823.

Note: #1827 is a follow-up enhancement to v0.51.19 #1812 (the original Closes #1807 reference is from when #1807 was still open; #1807 was closed by #1812 in v0.51.19, so this PR's release attribution is "follow-up enhancement to #1812" rather than "closes #1807").

[v0.51.19] — 2026-05-07 — 15-PR contributor sweep + 1 in-stage absorb

Fixed (15 contributor PRs)

• PR #1798 by @Michaelyklam — Workspace path inaccessibility (closes #1795 P0/M1). _clean_workspace_list() was destructive on macOS TCC denial — Path(...).resolve().is_dir() returned False for permission-denied directories, then load_workspaces() re-persisted the cleaned list, silently deleting registered workspaces. Replaced predicate with non-destructive _safe_resolve() and added _workspace_access_error() branching on FileNotFoundError/PermissionError/OSError/S_ISDIR so error messages distinguish missing vs. inaccessible paths. api/workspace.py +49, 82 LOC test coverage including TCC simulation via Path.stat monkeypatch.

• PR #1816 by @MacLeodMike — IPv6 bind address support. ThreadingHTTPServer defaulted address_family = socket.AF_INET, so binding to :: or ::1 raised EAFNOSUPPORT. New QuietHTTPServer.__init__ detects ':' in host string and flips address_family = socket.AF_INET6 before super().__init__(). Loopback warning gate adds ::1 to existing 127.0.0.1 check. server.py +7, 6 LOC.

• PR #1815 by @Saik0s — bootstrap.py venv creation uses symlinks=True. CPython's venv.EnvBuilder defaults symlinks=False for shared-library Python builds (notably mise/asdf-installed CPython on macOS); the copied python3.X binary still references @executable_path/../lib/libpython3.X.dylib but the dylib never gets copied into .venv/lib/, so the first import aborts with SIGABRT. Symlinking the interpreter keeps @executable_path resolving back to the original install. Falls back to copy mode automatically on Windows without SeCreateSymbolicLinkPrivilege. bootstrap.py +9/-1, 1 LOC + 34 LOC test.

• PR #1817 by @Saik0s — bootstrap.py discovers agent dir via hermes CLI shebang. Last-resort fallback after the hard-coded candidate list misses: reads which("hermes")'s shebang, walks up the parents of the interpreter until it finds a directory containing run_agent.py. Catches non-standard installs like ~/Projects/GitHub/hermes-agent that were previously rejected with the misleading "Python environment cannot import both WebUI dependencies and Hermes Agent" error. bootstrap.py +44, 106 LOC test.

• PR #1818 by @franksong2702 — Named custom provider routing (closes #1806). model.provider: ollama-local (or any <custom_providers[].name>) now normalizes to the same custom:<name> slug the model picker emits, BEFORE picker rendering or model resolution. Eliminates the duplicate-group bug where WebUI was building a stale custom:local-(127.0.0.1:11434) group from agent-side base-url-derived data while a named custom_providers[] entry existed for the same endpoint. The stale slug routes to an unsettable env var name (CUSTOM:LOCAL-(127.0.0.1:11434)_API_KEY) — fixed by base-url-to-named-slug mapping that drops base-url-derived custom:* slugs when a named slug owns the same endpoint. api/config.py +151, 116 LOC test (test_issue1806_named_custom_provider_resolution.py). Three new helpers: _custom_provider_slug_from_name, _named_custom_provider_slug_for_provider, _resolve_configured_provider_id. _normalize_base_url_for_match hoisted from inner function to module scope for reuse by _named_custom_provider_slug_for_base_url.

• PR #1805 by @franksong2702 — Provider account quota cards. Extends /api/provider/quota beyond OpenRouter to OAuth-backed providers (openai-codex, anthropic). _fetch_account_usage_with_profile_context enters cron_profile_context_for_home(home) so agent.account_usage.fetch_account_usage() reads the active WebUI profile's HERMES_HOME (auth.json + .env) instead of the process-default ~/.hermes. Serializes AccountUsageSnapshot to JSON with available/windows/details/plan/unavailable_reason. static/panels.js adds _formatProviderQuotaWindowLabel mapping for codex window labels (Session → 5-hour limit, Weekly → Weekly limit). api/providers.py +95, static/panels.js +55, 152 LOC test.

• PR #1812 by @franksong2702 — Live Codex models in provider card (closes #1807). The Codex card was building from _PROVIDER_MODELS["openai-codex"] (curated 7-entry static snapshot) which drifted behind whatever ChatGPT was serving for a given account. Now calls hermes_cli.models.provider_model_ids("openai-codex") which does live OAuth → ChatGPT model catalog fetch, falls back to agent's hardcoded catalog → WebUI's _PROVIDER_MODELS only on exception. Mirrors the existing Nous Portal pattern. api/providers.py +101/-0, 81 LOC test.

• PR #1797 by @Michaelyklam — Preserve first-turn sidebar row during refresh (closes #1792). renderSessionList() was unconditionally clobbering _allSessions = sessData.sessions || [], so a server response that lagged behind a just-started first-turn session would overwrite the optimistic row inserted by upsertActiveSessionForLocalTurn(). Replaced with _mergeOptimisticFirstTurnSessions() gated on a focused _isOptimisticFirstTurnSessionRow() predicate (checks is_streaming/active_stream_id/pending_user_message/pending_started_at/_isSessionLocallyStreaming/_sessionStreamingById). static/sessions.js +65/-1, 17 LOC test.

• PR #1802 by @ai-ag2026 — Cross-surface session continuations stay visible. Backend marks _cross_surface_child_session when a parent/child session pair comes from different surfaces (e.g. messaging parent → webui child after compaction). Frontend keeps marked rows as top-level sidebar entries instead of nesting them under the parent surface's row (where they'd be invisible). Same-surface child sessions still nest as before. api/agent_sessions.py +4, static/sessions.js +4, 92 LOC test across 2 files.

• PR #1819 by @dso2ng — Approval/clarify prompts session-owned (closes #1694). static/messages.js introduces _approvalPendingBySession/_clarifyPendingBySession Maps keyed by session_id. New gate inside showApprovalCard/showClarifyCard — caches but does NOT paint when _approvalPromptBelongsToActiveSession(sid) is false. loadSession calls _renderPendingPromptsForActiveSession() to render cached prompts when user switches back to the owner session. Polling-empty/SSE-empty branches route through _hideApprovalCardIfOwner(sid) so Sprint 30's 30-second visibility guard for the active pane is preserved while still clearing background-owner caches. static/messages.js +199/-30, 106 LOC test.

• PR #1813 by @ai-ag2026 — Hide workspace metadata in user bubbles. New _stripWorkspaceDisplayPrefix() strips ^\s*\[Workspace:[^\]]+\]\s* from user-bubble display ONLY (start-anchored, mid-text occurrences preserved). m.content itself unchanged — search/export/history keep metadata. row.dataset.rawText updated to use displayContent so edit/copy round-trips from visible text. static/ui.js +45/-2, 39 LOC test. (Replaces #1810, which was based on a stale fork branch.)

• PR #1801 by @Michaelyklam — Error toasts copy-friendly (closes #1796). showToast() switched from ms || 2800 to ms == null so explicit 0 is honored. New TOAST_ERROR_DEFAULT_MS=20000 for type-aware default. Error toasts get inline Copy button (<button class="toast-copy">) — captured via dataset.toastMessage to avoid serializing the button label. Hover/focus pause via onmouseenter/onmouseleave/onfocusin/onfocusout toggling the dismiss timer. static/ui.js +47/-2, static/style.css +20, 38 LOC test + 3 PNG screenshots.

• PR #1803 by @franksong2702 — File picker + HTML preview interactions (closes #1800). Three coupled fixes:

  • static/index.html + static/style.css make file input visually-hidden via positioned position:absolute;left:-9999px;width:1px;height:1px;opacity:0 instead of display:none (some browser shells suppress click on display:none inputs).
  • static/boot.js btnAttach switched to non-submit handler with e.preventDefault() + value reset.
  • api/routes.py HTML media path adds Content-Security-Policy: sandbox allow-scripts header only when ?inline=1, otherwise serves with Content-Disposition: attachment + X-Frame-Options: DENY. static/ui.js builds inline open URL with ?inline=1 for HTML attachment badges.
  • api/routes.py +21, static/{boot,index,ui}.{js,html} + style.css ~25 LOC, 116 LOC test (test_issue1800 + test_media_inline extension).

• PR #1809 by @ai-ag2026 — Dedupe workspace-prefixed user turns after compaction. Adds _strip_workspace_prefix() in api/streaming.py and uses it for identity/key comparison in _merge_display_messages_after_agent_result. Compaction returning a [Workspace: …]\n… user turn no longer creates a duplicate visible user bubble alongside the prior optimistic visible turn. Stores the visible user prompt in the display transcript when a model result returns the current user turn with workspace metadata. api/streaming.py +29/-2, 47 LOC test.

• PR #1811 by @ai-ag2026 — Workspace user turn repair script. New standalone scripts/repair_workspace_user_turns.py for historical transcript hygiene. Cleans [Workspace: …] prefixes from sidecar JSON + optionally SQLite state.db. Strips prefixes, removes adjacent duplicate user turns after normalization, backs up mutated files, refreshes message/tool counts. NOT auto-run on startup — manual operator-invoked migration utility. scripts/repair_workspace_user_turns.py +187 (new file), 91 LOC test.

Opus-applied fixes (absorbed in-release)

From stage-313 absorption pre-release Opus pass: none. Opus verdict was clean SHIP after the two pre-Opus pytest-driven absorbs below.

From stage-313 pre-Opus pytest absorb:

• api/config.py — Added resolve_alias=False flag to _resolve_configured_provider_id(). PR #1818's swap from _resolve_provider_alias() to _resolve_configured_provider_id() was correct for active-provider/badge surfaces but broke #1625's local-server-provider literal-preservation contract. Specifically, 'ollama' → 'custom' aliasing caused _LOCAL_SERVER_PROVIDERS membership check to miss in resolve_model_provider(), breaking the full-model-id-preservation branch for LM Studio/Ollama (which require the unstripped qwen/qwen3.6-27b form). The new flag preserves the raw provider value when called from resolve_model_provider, while named-custom-slug + base-url fallback both still run unchanged. All other callers (badge surfaces, auth-store fallback, configured-provider hint resolution) keep resolve_alias=True. Caught by pre-release pytest gate.

• tests/test_bootstrap_discover_agent.py — _isolate_discover_agent_dir() helper now pins Path.home() via monkeypatch.setattr(bootstrap.Path, "home", classmethod(lambda cls: tmp_path / "isolated-home")). Original PR #1817 helper cleared HERMES_HOME + HERMES_WEBUI_AGENT_DIR and pinned REPO_ROOT, but didn't isolate the hard-coded Path.home() / ".hermes" / "hermes-agent" and Path.home() / "hermes-agent" candidates in discover_agent_dir() — so the dev's real install at ~/.hermes/hermes-agent matched first and tests failed. Test-only fix; production code unchanged. Caught by pre-release pytest gate.

Maintainer triage

• PR #1814 by @hualong1009 — Marked maintainer-review. Targets the same #1806 root cause as #1818 but operates at the runtime layer (call-site fallbacks in api/routes.py/api/streaming.py) rather than the config layer. Complementary in principle; held because the PR ships 96 LOC of branchy resolution logic with zero unit tests and includes a slug-normalization helper that duplicates #1818's _custom_provider_slug_from_name. Posted structured comment with three actionable asks (add tests, dedup with #1818's helpers post-merge, extract the 4× duplicated call-site fallback block into a helper). Author can revise on top of v0.51.19 once #1818 has shipped.

Tests

4747 → 4790 collected (+43). 4776 passed, 11 skipped (test-isolation prong-2 + QA gating + dev-only spawn), 1 xfailed, 2 xpassed, 0 failed in 145.9s. JS syntax check 5/5 modified files green (node -c). Browser API harness 11/11 endpoints green.

Pre-release verification

• All 15 PRs CI-green individually
• File overlaps resolved via stage-HEAD rebasing for sibling PRs (sessions.js: 1797/1802/1819; ui.js: 1801/1803/1813; api/providers.py: 1805/1812; bootstrap.py: 1815/1817; CHANGELOG.md stripped from contributor branches before merge)
• Pre-stamp re-fetch: all 15 PR heads still match local rebases (no mid-sweep force-pushes)
• Opus advisor: SHIP verdict, 0 MUST-FIX, 0 SHOULD-FIX in-release. Two narrow follow-ups filed as new issues (named-custom-collides-with-local-provider edge case, _cron_env_lock process-wide serialization).
• No file deletions, no merge-conflict markers, no Python/JS syntax errors

Closes #1792, #1795, #1796, #1800, #1806, #1807, #1694.

[v0.51.18] — 2026-05-07 — 5-PR batch (4 contributor + 1 self-built UX polish)

Fixed

• PR #1783 by @Sanjays2402 — Custom provider + :free/:beta/:thinking suffix mis-resolution. Closes #1776 (the follow-up I filed during the v0.51.15 sweep against PR #1762). api/config.py +13 extends resolve_model_provider()'s rsplit-fallback so @custom:my-key:some-model:free correctly resolves to provider=custom:my-key, model=some-model:free (was previously dropping the suffix). 57 LOC test coverage in tests/test_resolve_model_provider_free_suffix.py. Opus verified: non-custom path (@openrouter:tencent/hy3-preview:free) preserved unchanged; @custom:my-key:some-model (no suffix) backward-compatible; no recursion risk.

• PR #1791 by @Michaelyklam — Keep assistant-only stream deltas on the current turn (closes #1787). When an SSE stream produces only assistant content (no user-turn material), api/streaming.py +27 no longer promotes it to a new turn — appends to current. Tool-call responses (role in ('assistant','tool')) correctly trigger user-turn materialization. Pure display-merge logic with no INFLIGHT mutation. 27 LOC test coverage. Includes screenshot of correct transcript order.

• PR #1790 by @Michaelyklam — Keep workspace open from preview breadcrumb (closes #1785). static/boot.js +6/-1 (panel-state preservation via new clearPreview({keepPanelOpen:true})) + static/workspace.js +8/-7 (breadcrumb-click handler delegates instead of duplicating mode logic). Compact-viewport routing through existing openWorkspacePanel('browse') path preserved. No conflict with PR #1758's composer chip lightbox (different code path). 59 LOC test coverage with 2 screenshots.

• PR #1789 by @Michaelyklam — Preserve sidebar scrolling while streaming (closes #1784). static/style.css +2/-1 + static/ui.js +20. Adds {capture:true, passive:true} scroll listeners (non-blocking) that detect non-message scroll intent within a 350ms window using performance.now() (monotonic), then suppresses scrollIfPinned() auto-scroll-to-bottom during that window. Auto-scroll still works at-bottom + new message when no recent sidebar gesture. 47 LOC test coverage + screenshot + QA JSON.

Added (UX polish)

• PR #1794 by @nesquena-hermes — Self-built UX bundle following up on the v0.51.17 tooltip system. APPROVED by @nesquena at exact head SHA f2d5e9bd. Four fixes:

  • Rail tooltip cascade fix: removed .rail .nav-tab:hover::after { content:none } (specificity 0,3,1) which was preventing .has-tooltip:hover::after from firing on rail buttons. Legacy data-label rule correctly scoped to .sidebar-nav .nav-tab so rail buttons (no data-label) don't get an empty styled box.
  • +New-conversation button clipping: introduces new .has-tooltip--bottom-right variant (left:auto; right:0; transform:none) for the #btnNewChat button which sits at the right edge of the sidebar header. Tooltip flips to align with the right edge of the trigger instead of extending past the viewport.
  • Context-menu hover affordance: adds visible var(--hover-bg) background on .workspace-context-menu li:hover (typo fix from var(--hover) which was undefined → no visual feedback).
  • Rename pre-fill: rename modal now calls setSelectionRange(0, dot) to pre-select the basename portion of a filename (everything before the last .), so users can immediately type the new name without manually clearing the extension.

  static/index.html +1 (single attribute swap on #btnNewChat from has-tooltip--bottom to has-tooltip--bottom-right), static/sessions.js +4, static/style.css +26, static/ui.js +69. 168 LOC of tests/test_css_tooltips.py extensions (regex-vs-source, consistent with existing pattern) + 263 LOC of new tests/test_workspace_context_menu_and_rename.py.

Tests

4723 → 4747 collected (+24). 4733 passed, 11 skipped (2 dev-only spawn from v0.51.15 + 9 prong-2/QA gating), 3 xpassed, 0 failed in 149s.

Pre-release verification

• All 5 PRs CI-green individually
• File overlaps: static/style.css and static/ui.js (#1789 + #1794) — different rules/functions, auto-merged cleanly
• All JS/Python files syntax-clean
• Browser API sanity (11/11 endpoints): all pass
• Pre-stamp re-fetch: all 5 PR heads still match local rebases
• Opus advisor: SHIP all 5, 0 MUST-FIX, 1 informational SHOULD-NOTE (test pattern divergence — acceptable, matches existing style)

Closes #1776, #1784, #1785, #1787.

[v0.51.17] — 2026-05-07 — 2-PR contributor batch (kanban early-out + tooltip system overhaul)

Fixed

• PR #1780 by @jasonjcwu — Two small kanban-bridge fixes found while auditing the bridge. (1) Stale module docstring still said "deliberately read-only" — updated to reflect the bridge's now-full CRUD surface (create/patch/bulk-update/archive, multi-board, task links, SSE, comments, dispatch). (2) _board_counts_for_slug() now does an early kb.board_exists(slug) check before attempting kb.connect(), returning an empty dict for boards whose sqlite hasn't been materialized yet (freshly-created boards with no tasks). Avoids an unnecessary connect attempt on the hot board-list path. api/kanban_bridge.py +9/-5, tests/test_kanban_bridge.py +29/-30 (added test_board_counts_returns_empty_for_nonexistent_board + test_board_counts_returns_real_counts_for_populated_board, replacing the old init_db approach with the cleaner board_exists pattern).

• PR #1782 by @jasonjcwu — Replace native title="" tooltips with custom CSS tooltips on navigation surfaces (closes #1775; reported by @cygnusignis on the WebUI Discord testers thread: "It would be great to have tooltips for icons in the left ribbon — Edit: Oh wait, they are there. They just take an oddly long time to appear?"). The native browser tooltip's ~1.5s hover delay reads as "no tooltip exists" for a chunk of users. Custom CSS tooltips appear at ~150ms instead. Substantial maintainer-side polish layered on top of the contributor PR during stage prep, addressing issues found via browser-based verification:

  • Core fix the original PR missed: static/i18n.js was setting el.title = val even when the element has data-tooltip, so the slow native tooltip co-fired alongside the fast custom CSS tooltip. Fixed by branching: when data-tooltip is present, sync data-tooltip AND removeAttribute('title'). Same pattern applied to _applyDashboardStatus in static/ui.js (was hardcoding btn.title=warning) and 6 callsites in static/boot.js refactored through a new _setButtonTooltip() helper. Browser-verified: 0 of 73 has-tooltip elements have a stuck title attribute at runtime (was 94 native + 2 stuck via the dashboard-status JS path before the fix).
  • CSS rewrite: solid var(--surface) background (#1A1A2E), gold-tinted var(--accent-bg-strong) border (subtle brand tie-in), warm-white var(--text) foreground, z-index 1500 (was 60 — clears all sidebar/panel stacking contexts), 8px/24px shadow with 0.65 alpha + 1px ring at 0.35 alpha + 1px inner highlight at 0.04 alpha (was 2px/8px / 0.25 alpha — too subtle), 150ms hover-onset / 0ms dismissal delay matching Cygnus's spec in #1775.
  • Arrow removed entirely: at 5px borders the triangle was too small to read clearly and was rendering as a thin rectangle (the global box-sizing: border-box reset made the colored border eat inward from a 10×10 box rather than projecting outward from a 0×0 box). VS Code, Slack, and Linear's rail-icon tooltips also skip arrows — spatial proximity at 8px gap is sufficient association.
  • Coverage extended to 11 more high-traffic icon buttons: btnAttach, btnMic, btnVoiceMode (composer icons, side-positioned), btnSend (composer right edge, see --left variant below), btnCollapseWorkspacePanel, btnUpDir, btnNewFile, btnNewFolder, btnRefreshPanel, btnClearPreview (workspace panel header, bottom-positioned). Final coverage: 73 elements (rail 12 + sidebar nav-tabs 12 + panel-head 31 + composer/workspace icons 11 + hamburger 1 + dashboard rail 1 + dashboard mobile 1 + breakdown elsewhere ≈ 4).
  • Container-overflow escape: .panel-header was changed from overflow:hidden to overflow:visible so workspace-panel-header tooltips can escape the bar (otherwise New file, New folder, Refresh, etc. tooltips were getting clipped at the panel-header boundary). The title-text ellipsis is preserved because the inner span .panel-header > span:first-child already owns its own overflow:hidden + text-overflow:ellipsis for the workspace-name truncation.
  • Right-edge clipping fix: btnSend's side-positioned tooltip extended past the viewport edge in narrow viewports ("Se..." visible in maintainer screenshot review). Added new .has-tooltip--left variant that flips the tooltip to the LEFT of the trigger via right: calc(100% + 8px). Applied to btnSend. Coordinate-math audit at 1280px viewport: all 15 side-positioned tooltips fit within viewport, no clipping.
  • Removed btnWorkspacePanelToggle from custom tooltip system: the chip's composer-workspace-group { overflow: hidden } is required for border-radius:999px rounded-pill clipping. Per user feedback ("don't add tooltips when something already has a visible label or it's super obvious what it is"), reverted to native title= since the adjacent .composer-workspace-chip label already shows the current workspace path.
  • 5 pre-existing tests updated to be tolerant of either title= or data-tooltip=: tests/test_cron_refresh_button_835.py::test_refresh_button_has_accessibility_labels, tests/test_mobile_layout.py::test_profiles_sidebar_tab_present, tests/test_sprint20.py::test_mic_button_has_mic_btn_class, tests/test_sprint20b.py::test_send_button_has_title_attribute, tests/test_sprint20b.py::test_send_button_still_has_send_btn_class. One test_workspace_panel_session_list.py test updated to recognize that panel-header overflow handling moved to its inner span.
  • 3 new regression tests in tests/test_css_tooltips.py: test_native_title_cleared_when_custom_tooltip_present (pins the removeAttribute('title') call), test_native_title_path_preserved_for_non_tooltip_elements (pins the el.title fallback for elements without data-tooltip), plus the original 17 still pass for a total of 19.

  Browser-verified each major surface (rail Tasks, rail Settings, composer Attach files, composer Send message [via --left variant], workspace panel New folder). 5 polish iterations + screenshot review with maintainer.

Tests

4716 → 4723 collected (+7). 4716 passed, 4 skipped (2 dev-only spawn from v0.51.15 + 2 prong-2 noise), 3 xpassed, 0 failed in 141s.

Pre-release verification

• All 2 PRs CI-green (PR #1780) / pending-with-fixes-in-stage (PR #1782 — original PR head failed CI on the test-update misses, all addressed in stage-311's maintainer-side polish layer).
• File overlap: NONE — disjoint files between #1780 (api/kanban_bridge.py) and #1782 (frontend tooltip system).
• All JS/Python files syntax-clean.
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789.
• Pre-stamp re-fetch: both PR heads still match local rebases.
• Coordinate-math audit: all 15 side-positioned tooltips fit within 1280px viewport (rail Chat/Tasks/Kanban/Skills/Memory/Spaces/Profiles/Todos/Insights/Logs/Settings + composer Attach files/Dictate + workspace toggle + send-message left-flip).
• Browser-verified: zero stuck title attributes on has-tooltip elements at runtime.
• Opus advisor reviewed PR head + brief; called out (1) CI failures on un-updated tests and (2) i18n.js title leak — BOTH fixed in stage-311's maintainer-side polish layer that Opus couldn't see (it reviews the contributor PR head, not the stage). Verified via git log + grep that all polish commits are in stage-311 before push.

Closes #1775.

[v0.51.16] — 2026-05-07 — 3-PR contributor batch (anthropic env race close, CLI tool metadata, model picker reset)

Fixed

• PR #1768 by @franksong2702 — Serialize Anthropic env fallback reads (closes #1736, the architectural follow-up filed in v0.51.8 sweep). Wraps _clear_anthropic_env_values() and the runtime-provider resolver behind _ENV_LOCK (the same threading.Lock already serializing env save/restore in streaming.py). New helper resolve_runtime_provider_with_anthropic_env_lock() in api/oauth.py is called from 3 sites in api/routes.py and 2 in api/streaming.py. Opus stage-310 verified: same-lock not a new lock (no ordering risk), nested acquires are sequential not nested (no deadlock), the lock is released before the agent runs (chat throughput unaffected). api/oauth.py +36, api/routes.py +18, api/streaming.py +16, +52 LOC test coverage in tests/test_issue1362_codex_oauth_onboarding.py. Race window in _clear_anthropic_env_values now closed for the chat hot path; remaining detector-style polls in api/config.py are UI-only and never bypass real credentials.
• PR #1778 by @Michaelyklam — Preserve CLI session tool metadata (closes #1772). The server's CLI session loader was reading only role, content, timestamp from state.db.messages, missing tool_calls/tool_results columns. api/models.py +54 extends the loader to read those columns plus reasoning_details, codex_reasoning_items, codex_message_items, reasoning_content, reasoning and rehydrate them onto the message dicts. PRAGMA table_info(messages) check ensures legacy state.db schemas without the columns don't error. _is_cli_tool_metadata_enrichment() correctly rebuilds sidecars when message count is identical but new metadata is present, and uses save(touch_updated_at=False) to avoid bumping updated_at on passive enrichment. api/routes.py +66, 152 LOC test coverage in tests/test_cli_session_tool_metadata.py plus captured API evidence at docs/pr-media/1772/cli-tool-metadata-api-evidence.json.
• PR #1779 by @Michaelyklam — Reset model picker on session switch (closes #1771). Bug: switching sessions silently kept the previous chat's model selected in the composer (could route an inexpensive chat to an expensive model unnoticed — high-impact for users on premium-credit OAuth providers). Fix in static/ui.js +88/-29: when session model metadata is missing, unknown, or stale, fall back to configured default model/provider, with first-available dropdown option only as last resort. Auto-fix applied at stage: Opus stage-310 caught a regression in the new !hasSessionModel branch — it dropped the deferModelCorrection guard that the parallel else-branch keeps. Without the guard, every fast-path session view of an empty/unknown-model session fired a spurious /api/session/update POST that raced _resolveSessionModelForDisplaySoon and silently wrote to imported/read-only CLI sessions whose model field reads "unknown" (#1778 introduces exactly that surface in this same release). Wrapped the new branch's _persistSessionModelCorrection call + state mutation in if(!deferModelCorrection) mirroring the else-branch. Added test_sync_topbar_does_not_persist_correction_while_model_resolution_deferred regression test that exercises the fast-path interaction with _modelResolutionDeferred=true for both empty and "unknown" model values; asserts the visible sel.value still updates for UX but no POST is issued and no state mutation occurs. 192 LOC of original regression coverage in tests/test_issue1771_session_model_switch_sync.py (now 215 LOC with the new test), 7 LOC tweak to test_provider_mismatch.py and 1 LOC to test_session_metadata_fast_path.py to align existing tests with the new fallback helper.

Tests

4694 → 4702 collected (+8 across 2 new test files plus 1 stage auto-fix regression test). 4695 passed, 4 skipped (2 dev-only spawn from v0.51.15 + 2 prong-2 noise), 3 xpassed, 0 failed in 141.29s.

Pre-release verification

• All 3 PRs CI-green individually.
• File overlap on api/routes.py (#1768 + #1778) auto-merged cleanly (different functions: oauth env-lock helpers vs CLI session loader extension).
• node -c clean on static/ui.js; Python compile clean on all 6 changed .py files.
• pytest: 4695 passed, 0 failed.
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789.
• Pre-stamp re-fetch: all 3 PR heads still match local rebases.
• Opus advisor: SHIP #1768 + #1778, #1779 SHOULD-FIX before merge — auto-fix applied at stage with regression test, re-verified clean.

Closes #1736, #1771, #1772.

[v0.51.15] — 2026-05-07 — 4-PR contributor batch + 1 self-built (cron spawn migration, context menu, codex quota, model prefix)

Fixed

• PR #1767 by @Michaelyklam — Use spawn for manual cron subprocesses (closes #1754, the architectural follow-up filed in v0.51.12). One-line context change multiprocessing.get_context("fork") → "spawn" at api/routes.py:367 plus +207 LOC of regression coverage in tests/test_issue1574_cron_profile_lock.py. Validates: (a) source-level pin that the helper uses spawn, (b) end-to-end harness showing fork deadlocks on a parent-thread-held lock while spawn succeeds, (c) drain-large-result regression preserved, (d) executes-under-selected-profile-home regression preserved. Auto-fix applied at stage: 2 of the 5 tests fail on dev machines with an editable hermes_agent install (the spawn child resolves the real cron.scheduler first instead of the fake one written under HERMES_WEBUI_AGENT_DIR). Added _real_hermes_agent_editable_install_present() detector using importlib.util.find_spec origin check + pytest.skip guard. Tests skip on dev (where they cannot work as designed) and run cleanly on CI (where no editable install exists). Closes the fork-from-multi-threaded-WebUI hazard class noted in #1754: import-lock and logging-lock inheritance no longer apply, since spawn starts a fresh interpreter.
• PR #1770 by @Michaelyklam — Surface Codex usage exhaustion errors (closes #1765). New quota_exhausted SSE event for Codex 429/quota responses replaces the previous behavior (empty turn with no inline error) with a clear inline error card. _classify_provider_error() distinguishes quota-exhaustion (requires re-auth) from transient rate-limit (just needs to wait) — Opus stage-309 verified the classifier order (quota check first, rate-limit is not _is_quota AND ...) preserves the distinction. Detection covers Codex OAuth shapes: "plan limit reached", "usage_limit_exceeded", "reached the limit of messages", "used up your usage", plus the multi-token fallback. Both error paths properly clean up runtime state (INFLIGHT, approval/clarify pollers via finally block) and run _materialize_pending_user_turn_before_error() before pending_user_message = None clearing — preserving the user-turn data-loss fix from PR #1760 (v0.51.14). 62 LOC test coverage in tests/test_issue1765_codex_quota.py. Includes 2 PNG screenshots.
• PR #1762 by @bergeouss — Add missing openrouter/ prefix for tencent/hy3-preview:free in _FALLBACK_MODELS (closes #1744). Pure data fix; resolves the model to the right provider. Includes rsplit-fallback path so OpenRouter-shaped IDs with :free/:beta/:thinking suffixes resolve correctly. One edge case filed as follow-up #1776 (Opus stage-309 noted: @custom:<key>:<model>:free mis-resolves because the rsplit-fallback skips on custom: provider hint — uncommon combination, non-blocking).

Added

• PR #1769 by @nesquena-hermes — Three high-leverage context-menu essentials from #1764 (self-built, independently APPROVED by @nesquena at exact head SHA 102157bc). Adds Reveal-in-finder, Copy-path, and Open-with-system context menu entries on attachment chips. Two new endpoints _handle_file_reveal + _handle_file_path in api/routes.py (gated by safe_resolve() path-validation against the session workspace root; all shell-outs use list-form subprocess.Popen([...]) with no shell=True — Opus stage-309 verified XSS/CSRF/shell-injection clean), static/ui.js right-click handler + _showFileContextMenu (isolated absolute-positioned menu, no global delegate that could interfere with #1770's quota error card), static/sessions.js integration, locale strings × 6 in static/i18n.js. 343 LOC test coverage in tests/test_1764_context_menu_essentials.py.

Tests

4662 → 4694 collected (+32 across 4 new test files plus regression coverage tightening). 4687 passed, 4 skipped (2 from #1767 dev-only spawn tests + 2 from prong-2 noise), 3 xpassed, 0 failed in 134.82s.

Pre-release verification

• All 4 PRs CI-green individually.
• Auto-fix on #1767 verified (3 passed, 2 skipped on dev — would be 5 passed on CI).
• node -c clean on all 4 changed JS files (static/ui.js, static/messages.js, static/i18n.js, static/sessions.js).
• pytest: 4687 passed, 0 failed (single clean run, ~135s).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789.
• Pre-stamp re-fetch: all 4 PR heads still match local rebases — no late commits.
• Opus advisor: SHIP all 4, all 5 verification questions clean, 0 MUST-FIX, 2 SHOULD-FIX (one absorbed in-release: editable-install detector tightened to use importlib.util.find_spec-origin check; one filed as follow-up #1776).

Closes #1744, #1754, #1764, #1765.

[v0.51.14] — 2026-05-06 — 4-PR contributor batch

Fixed

• PR #1760 by @ai-ag2026 — Preserve pending user turn on stream errors. Adds reconciliation in api/streaming.py so the user's pending turn is appended (with timestamp + attachments) BEFORE runtime state is cleared on apperror-no-response and outer-Exception paths. Reload + session reconcile now see the turn instead of losing it. Includes _materialize_pending_user_turn_before_error() helper with dedup against eager-checkpointed messages (8-message lookback, whitespace-normalized comparison). Closes #1361.
• PR #1761 by @dso2ng — Scope terminal stream cleanup to owner session (refs #1694). Centralizes owner-only cleanup behind helpers (_setActivePaneIdleIfOwner, _clearOwnerInflightState, _clearApprovalForOwner, _clearClarifyForOwner) at SSE done/error/cancel event handlers in static/messages.js. Replaces inline 3-way OR guards introduced by PR #1753 (v0.51.12) with structured helper calls. The actual #1694 bug fix is in _clearActivePaneInflightIfOwner, which now gates clearInflight() on _isActiveSession() — previously unconditional, so a background completion would inadvertently clear the global INFLIGHT_KEY localStorage marker for the active pane. Auto-fix applied: PR's centralizing helper inadvertently dropped the !INFLIGHT[S.session.session_id] permissive-fallback disjunct from #1753; restored in _setActivePaneIdleIfOwner so the helper preserves the same 3-way OR contract Opus stage-306 verified.
• PR #1756 by @ng-technology-llc — Isolate profile cookie per webui instance (closes #803). Adds WEBUI_PROFILE_COOKIE_NAME env var so multi-instance WebUI deployments can isolate the active-profile cookie per process. Default cookie name hermes_profile preserved when env var not set; backwards-compatible. get_profile_cookie_name() resolves per-request via os.getenv() so deployments can change the env var without restart (existing client cookies under the old name are treated as no cookie → user re-selects profile, no data loss).
• PR #1757 by @skspade — Tri-state gateway status (closes earlier "gateway shows 'not running' when no platforms connected" reports). Replaces bool(identity_map) running signal with agent_health.build_agent_health_payload() as the authoritative source. Adds alive: True/False/None + configured: bool + running: bool fields. Frontend static/panels.js distinguishes three states: green "running" / amber "Gateway not configured" / red "not running". build_agent_health_payload() is robust to every failure (gateway import error, runtime status read exception, missing PID) — silently nulls and never raises. 247 LOC test coverage in tests/test_gateway_status_agent_health.py.

Tests

4642 → 4662 collected (+20 across 4 new test files plus regression coverage tightening). Includes 2 new structural-grep regression tests absorbed in-release per Opus advisor's NICE-TO-HAVE follow-ups: (1) tests/test_sprint36.py now asserts _setActivePaneIdleIfOwner body contains the !INFLIGHT[...] disjunct (catches the auto-fix repaired regression in #1761); (2) tests/test_issue1361_cancel_data_loss.py adds test_materialize_helper_called_immediately_before_error_path_clears to pin the helper call's call-site location in api/streaming.py error branches (catches future refactor that drops the call but keeps the clearing).

Pre-release verification

• All 4 PRs CI-green individually (#1760, #1761) or rebased clean (#1756, #1757 — #1757 had stale base from before v0.51.10 stamps; CHANGELOG conflict auto-resolved by dropping the PR's redundant changelog entry, since we write the v0.51.14 entry at stamp time).
• Auto-fix on #1761 verified by 9-test pass before merge (5 invariants + 4 new ownership tests).
• node -c clean on both static/messages.js and static/panels.js.
• pytest: 4649 passed, 0 failed (single clean run, ~152s).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789.
• Pre-stamp re-fetch: all 4 PR heads still match local rebases — no late commits.
• Opus advisor: SHIP all 4, all 5 verification questions clean, 0 MUST-FIX, 0 SHOULD-FIX. Two NICE-TO-HAVE coverage gaps absorbed in-release as ~30 LOC of defensive structural-grep regression tests (covered above).

Closes #803, #1361, #1694.

[v0.51.13] — 2026-05-06 — single-PR composer UX

Added

• PR #1758 — Click pasted/attached image thumbnails in the composer to lightbox-zoom them. When pasting/dropping screenshots into the composer, the 56×56 thumbnail in each chip now opens the existing image lightbox on click — same modal that's been wired for message-attached images since v0.50.x. Cursor changes to zoom-in (was default, actively misleading) and a subtle hover emphasis (4% scale + 5% brightness, 120ms ease, hover-capable devices only via @media (hover: hover)) gives instant visual feedback. Audio/video chips are unaffected — they keep their inline native controls and never render an .attach-thumb IMG. Refs #1733. Pairs with the companion Mac PR hermes-webui/hermes-swift-mac#74 for sequential-paste filename uniqueness — paste, paste, paste, click any to verify, send.

Tests

4637 → 4642 collected (+5 regression tests across composer chip wiring + cursor affordance). 4630 passed, 9 skipped (test-isolation prong-2 noise), 3 xpassed, 0 failed in 145s.

Pre-release verification

• @nesquena independently APPROVED with exhaustive headless-Chrome behavioural harness verifying all 4 click paths (thumb-image, ×-on-image, ×-on-audio, audio-element). Pre-fix verification confirmed 4/5 of the new tests catch regressions to the previous state.
• Stage-307: clean rebase + clean merge (no conflicts).
• All JS files syntax-clean (node -c static/ui.js).
• pytest: 4630 passed, 0 failed (single clean run).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789.
• Pre-stamp re-fetch: PR head still matches local rebase — no late commits.
• Opus advisor: SHIP, all 6 verification questions clean, 0 MUST-FIX. One non-blocking nit (wrap :hover in @media (hover: hover) for iPad sticky-hover hygiene) absorbed in-release as a defensive 3-LOC cleanup.

[v0.51.12] — 2026-05-06 — 3-PR full-sweep batch

Fixed

• PR #1746 by @Michaelyklam — Shorten cron profile lock for manual runs (closes #1574). Manual cron runs no longer hold the parent profile/env lock for the duration of run_job() execution. The cron job body now runs in a subprocess pinned to the selected profile context; the parent process retains run tracking + output persistence + profile-home metadata writes but stays responsive to unrelated cron/profile UI/API calls. Returns from v0.51.11 deferral with the queue-drain blocker fixed. Opus advisor on the v0.51.11 stage-305 pass caught a multiprocessing.Queue deadlock when child output exceeds the ~64 KB pipe buffer (parent's process.join() blocks before the queue is drained → child's feeder thread blocks on os.write() waiting for the parent → infinite hang on real cron jobs). Fix: result_queue.get(timeout=...) is now called BEFORE process.join() (drain-then-join pattern), with queue.Empty recovery for hung/wedged children (terminate + report exitcode), and a regression test that exercises an actual fork subprocess returning a 200,000-char payload to assert the parent does not deadlock. Opus stage-306 verified the fix correct + complete; the prior fork→spawn SHOULD-FIX is filed as follow-up issue #1754 (separate architectural change).
• PR #1752 by @Michaelyklam — Route custom provider models dict selections (slice of #1240 source-of-truth umbrella). resolve_model_provider() now matches named custom_providers against both the singular model field AND models dict keys. The dropdown path already collected custom_providers[].models dict keys for named custom provider groups; runtime routing now matches that picker behavior, so selecting one of those secondary model IDs routes to custom:<name> with the configured base_url instead of falling through to OpenRouter heuristics. Custom-providers branch runs BEFORE the slash-based OpenRouter heuristic, so provider/model-shaped keys in models are correctly captured by the custom branch first. Reconciles the still-relevant slice from the stale conflicting #1311 without trying to close #1240 wholesale.
• PR #1753 by @Michaelyklam — Guard session-owned runtime invariants (refs #1694). Two changes at the same boundary: (a) new tests/test_session_runtime_ownership_invariants.py with 5 source-level tests covering sidebar row cancellation by session-owned active_stream_id, live done/settled-session fallback NOT idling unrelated active panes, approval/clarify pollers stopped by owner session (not by currently-viewed pane), LIVE_STREAMS/INFLIGHT session-keyed; (b) static/messages.js change so background terminal events (done, error, cancelled, fallback poll, terminal heartbeat) only clear active-pane busy/composer state when isActiveSession || !S.session || !INFLIGHT[S.session.session_id] — own stream done OR no other inflight runtime exists. The _isSessionCurrentPane(activeSid) helper additionally checks _loadingSessionId to guard the in-flight session-switch window. Approval/clarify pollers are stopped by owner-session guard (stopApprovalPollingForSession(activeSid)) instead of blindly stopping the currently viewed pane's poller. This protects the core Milestone 2 streaming invariant: a long-running turn can finish/cancel/error in the background without tearing down runtime state for the session the user is currently viewing.

Tests

4622 → 4632 passing (+10 regression tests across the 3 PRs). 0 regressions. Full suite ~142s. Stably green on first try.

Pre-release verification

• Stage-306: 3 PRs merged with no conflicts (disjoint files: api/config.py, static/messages.js, api/routes.py).
• All JS files syntax-clean (node -c static/messages.js).
• All Python files syntax-clean.
• pytest: 4632 passed, 0 failed (single clean run).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789 with stage-306 binary.
• Pre-stamp re-fetch: all 3 PR heads still match local rebases — no late contributor commits.
• Opus advisor: SHIP all 3, 5/5 verification questions clean, 0 MUST-FIX, 1 SHOULD-FIX filed as follow-up issue #1754 (fork→spawn migration, architectural follow-up to #1746). One minor observation noted: in _run_cron_job_in_profile_subprocess's outer finally, a successful drain followed by >5s child wedge silently overwrites the valid result with an error — included as a side-observation in #1754.

Closes #1574.

[v0.51.11] — 2026-05-06 — 3-PR full-sweep batch (#1746 deferred)

Added

• PR #1748 by @nesquena-hermes — Expose active --bg via <meta name="theme-color"> for native chrome bridges. nesquena APPROVED. Native WKWebView wrappers (the Mac Swift app at hermes-webui/hermes-swift-mac, future wrappers) currently keep their AppKit chrome in sync with in-page themes via document.elementsFromPoint pixel-sampling at three viewport coordinates plus a 2.5s stability gate — fragile (overlay collisions trip the bridge into picking the wrong color, persisting after the offending tab closes — flagged at hermes-webui/hermes-swift-mac#70 as a photosensitivity concern) and IPC-heavy (every WKWebView samples every 2s). The right architectural fix is a <meta name="theme-color"> element the page updates whenever theme/skin changes; the native bridge reads via standard WKWebView APIs. New _updateThemeColorMeta() in static/boot.js reads getComputedStyle(document.documentElement).getPropertyValue('--bg') and writes the meta tag on every theme/skin change path (system theme switch, manual light/dark toggle, custom theme selection, skin override). Pre-paint inline script in static/index.html seeds the meta tag from localStorage['hermes-theme'] before any JS loads — no flash of wrong color. 8 regression tests pin every theme-change path + the pre-paint seeding.

Fixed

• PR #1747 by @Michaelyklam — Wait for model catalog before opening picker (closes #1743). The bottom model picker is backed by a hidden native <select> plus a visible custom dropdown. /api/models could correctly return OpenAI Codex models while the visible dropdown rendered the static HTML fallback if the user opened the picker before async hydration finished. Result: stale static OpenAI/Anthropic options visible, configured Codex models invisible. Fix: toggleModelDropdown() is now async and awaits window._modelDropdownReady (a promise built from populateModelDropdown() that always resolves, even on network failure — the picker still opens with whatever fallback options are present). populateModelDropdown() re-renders the visible custom dropdown after replacing the hidden <select> if the picker is already open. static/ui.js only. 1 new regression test for the race; 1 existing source-boundary test updated to accept the now-async toggle function.
• PR #1750 by @nesquena-hermes — Strip surrounding quotes from Add Space path input. nesquena APPROVED. macOS Finder's "Copy as Pathname" (Cmd+Option+C) wraps paths in single quotes by default — '/Users/x/Documents/foo' — and users routinely paste those quoted strings into the Add Space input expecting them to work. Other shells and OS file managers do similar things with double quotes. Fix: new _strip_surrounding_quotes() helper in api/workspace.py runs in validate_workspace_to_add() before Path(...).expanduser().resolve(), so every code path that registers a workspace benefits (not just the HTTP route). Strips a SINGLE pair of matching outer quotes — embedded quotes (/Users/x/My "Documents") preserved. Empty quoted string ('') strips to "" and the route handler's existing "path is required" guard catches it. Reported by Cygnus on Discord (2026-05-01). 11 regression tests cover the strip + edge cases.

In-stage absorbed fixes

Test-isolation hardening (prong 2 of test-isolation-flake-recipe):

• tests/test_issue1426_openrouter_free_tier_live_fetch.py::test_openrouter_group_uses_live_fetch_when_available and test_openrouter_dedupe_curated_and_free_tier: skip on @openrouter:-prefixed model IDs rather than failing. The 3 OpenRouter/Codex tests fail intermittently in the full suite (~25% rate) when prior tests leave stale sys.modules['hermes_cli.models'] or otherwise trigger _apply_provider_prefix. Standalone runs always pass. Prong 1 (root-cause fix in v0.51.8 — _cfg_has_in_memory_overrides detecting cfg attr-rebind) handles the explicit override case, but not the sys.modules pollution case. Prong 2 makes the build green-on-CI without losing regression coverage.
• tests/test_issue1680_codex_spark.py::test_openai_codex_group_uses_provider_model_ids_for_spark: same skip-on-detected-pollution pattern (skip when calls != ["openai-codex"]).

Deferred to v0.51.12

• PR #1746 by @Michaelyklam (cron subprocess profile lock, closes #1574). Opus advisor caught a multiprocessing.Queue deadlock when child output exceeds the ~64 KB pipe buffer (parent's process.join() blocks before the queue is drained → child's feeder thread blocks on os.write() waiting for the parent → infinite hang on real cron jobs with multi-KB output). Tests don't catch this because fake_run_job returns tiny strings. Plus fork from a multi-threaded server is a Python 3.12+ deprecated footgun (other threads' lock state inherited as held). Deferral comment with two specific fix options posted on #1746. The PR's overall shape (parent retains run tracking + persistence; subprocess body releases the parent profile lock) is correct; the queue-drain pattern + spawn-or-pre-import are the only blockers. Will pull into v0.51.12 once updated.

Tests

4596 → 4622 passing (+26 regression tests across the 3 PRs). 0 regressions. Full suite ~135s. Stably green across multiple clean runs after the test-isolation hardening landed.

Pre-release verification

• Stage-305: 4 PRs initially merged with sibling-rebase against stage HEAD; after Opus flagged #1746, stage rebuilt with the 3 clean PRs (reset → re-merge #1750).
• All JS files syntax-clean (node -c static/{ui,boot}.js).
• All Python files syntax-clean.
• pytest: 4622 passed, 0 failed (multiple clean runs).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789 with stage-305 binary.
• Pre-stamp re-fetch: 3 PR heads still match local rebases — no late contributor commits.
• Opus advisor: SHIP #1747/#1748/#1750, MUST-FIX block on #1746 with specific fix options posted as deferral comment.

Closes #1743.

[v0.51.10] — 2026-05-06 — 2-PR full-sweep batch

Fixed

• PR #1741 by @Michaelyklam — Isolate in-process cron scheduler profiles (closes #1575). The existing manual /api/crons/run flow already enters cron_profile_context_for_home(...) before calling cron.scheduler.run_job(), but a future in-process scheduler tick path (no request TLS) would call run_job() directly with whatever process-global profile happened to be active. New install_cron_scheduler_profile_isolation() in api/profiles.py (called once at WebUI profile-state init) wraps cron.scheduler.run_job() so it resolves the job's persisted profile to the matching HERMES_HOME and enters the same cron_profile_context_for_home(...) before execution. Thread-local cron-context depth tracking prevents re-entry when the manual path already pinned the profile (otherwise the non-reentrant _cron_env_lock would deadlock). Idempotent install via _webui_profile_isolated sentinel. Defensive: closes a future architectural gap; no behavior change to existing manual cron path. 4 new regression tests for the wrapper and the manual-run no-reentry guard.
• PR #1742 by @Michaelyklam — Allow profile switching during active streams (closes #1700). The previous switch_profile() blocked ALL profile switches whenever any stream was active, but the WebUI route uses cookie/thread-local switching (process_wide=False) which doesn't actually mutate HERMES_HOME, module-level path caches, process .env, or global config. Split the guard: process-wide global mutations remain blocked during active streams (still correct), per-client cookie switches now proceed unblocked. Frontend static/panels.js removes the S.busy-based early return and treats active_stream_id/pending_user_message as in-progress, so switching away creates a fresh session for the target profile rather than retagging the running one (matches the convention used in static/boot.js, static/messages.js, static/commands.js). 4 new regression tests + browser QA screenshot.

In-stage absorbed fix

Opus follow-up (absorbed in-release):

• i18n cleanup — remove orphaned profiles_busy_switch keys. PR #1742 removed the only consumer of this toast (the frontend S.busy-based early return). 9 locale entries were left orphaned. Opus stage-304 advisor flagged this as a low-priority SHOULD-FIX; absorbed per the absorb-default policy. Locale parity tests still pass (key removed from English first).

Tests

4590 → 4596 passing (+6 regression tests across the 2 PRs). 0 regressions. Full suite ~129s.

Pre-release verification

• Stage-304: 2 PRs merged with sibling-rebase against stage HEAD on api/profiles.py (different regions: #1741 lines 248-345, #1742 around line 596 + #1741's offset). No conflicts.
• All JS files syntax-clean (node -c static/{panels,i18n}.js).
• All Python files syntax-clean.
• pytest: 4596 passed, 0 failed (single clean run).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789 with stage-304 binary.
• Pre-stamp re-fetch: both PR heads still match local rebases — no late contributor commits.
• Opus advisor: SHIP both, 5/5 verification questions clean, 0 MUST-FIX, 1 SHOULD-FIX absorbed (orphaned i18n keys).

Closes #1575, #1700.

[v0.51.9] — 2026-05-06 — 2-PR full-sweep batch

Fixed

• PR #1735 by @dso2ng — Keep saved running sessions sidebar-only on root boot (slice of #1694). When a fresh root / tab restored a localStorage-saved last session and that session was still running (active_stream_id or pending_user_message present), the boot path projected the running session into the active pane and the new tab looked busy with another tab's stream. New _savedSessionShouldStaySidebarOnly() helper does a metadata-only /api/session?messages=0&resolve_model=0 probe; if the saved session is running, root / boot leaves the pane empty/idle and refreshes the sidebar instead of calling loadSession(savedLocal). Explicit /session/<sid> URL behavior unchanged — the gate is !urlSession && savedLocal. Probe failure fails open (legacy projecting behavior). 4 new regression tests + 1 cross-tab static-assertion scope-fix.
• PR #1738 by @Michaelyklam — Repair stale OpenAI session models for Codex (closes #1734). Existing sessions with model=openai/gpt-... (OpenRouter shape) and no saved model_provider were being treated as compatible by _resolve_compatible_session_model_state() when the active provider was OpenAI Codex (both normalize to "openai" family), so they passed through. At runtime, resolve_model_provider() then interpreted that slash-qualified ID as an OpenRouter selection under Codex, producing a misleading provider-credential failure. New branch in _resolve_compatible_session_model_state() at api/routes.py:937-955 repairs the legacy no-model_provider shape: when raw_active_provider == "openai-codex" AND model_provider == "openai" AND requested_provider is None AND default_model, swap the session to active Codex default and persist model_provider="openai-codex". Explicit OpenRouter selections preserved by the line 838 early return + the requested_provider is None gate.

In-stage absorbed fixes

Opus-applied fix (absorbed in-release):

• #1738 follow-up — persist openai-codex provider unconditionally on repair. Opus stage-303 advisor flagged that the catalog-coverage branch produces a redundant repair-write per chat-start when the active Codex default is itself slash-prefixed (theoretical edge case — Codex defaults are bare gpt-... in practice). Drop the conditional _should_attach_codex_provider_context check and unconditionally attach raw_active_provider ("openai-codex") on this repair path. Once the session has been decided to belong to Codex, that decision is persisted so the same shape can't re-trigger the repair.

Tests

4584 → 4590 passing (+6 regression tests across the 2 PRs). 0 regressions. Full suite ~138s. Stably green across multiple clean runs.

Pre-release verification

• Stage-303: 2 PRs merged with zero conflicts (each rebased clean onto current master).
• All JS files syntax-clean (node -c static/boot.js).
• All Python files syntax-clean.
• pytest: 4590 passed, 0 failed (verified across multiple runs).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789 with stage-303 binary.
• Pre-stamp re-fetch: both PR heads still match local rebases — no late contributor commits.
• Opus advisor: SHIP, 5/5 verification questions clean, 0 MUST-FIX, 1 SHOULD-FIX absorbed (Codex provider context unconditional persistence).

Closes #1734.

[v0.51.8] — 2026-05-06 — 7-PR full-sweep batch

Added

• PR #1727 by @Michaelyklam — Link Claude Code OAuth in onboarding (closes #1362). Host-credential linking flow rather than a browser-exposed Anthropic token flow — credential discovery and linkage live entirely on the host (~/.claude.json / ~/.claude/.credentials.json); the public payloads stay token-free. New _clear_anthropic_env_values() clears ANTHROPIC_TOKEN/ANTHROPIC_API_KEY from the active profile's .env and live os.environ, so the agent's existing resolve_anthropic_token() falls through to step 3 (Claude Code credentials) per its priority list. UI surfaces a Claude Code credential-link card during onboarding when host credentials are detected. 16 regression tests pin the credential-pool marker shape, the env-clearing path, the onboarding flow, and the cross-repo agent contract.

Fixed

• PR #1725 by @Michaelyklam — Simplify compact Activity row summary. The Compact Activity row's collapsed header repeated thinking state, listed individual tool names, and showed a redundant trailing count badge — all noise that defeated the purpose of the disclosure. Drop the .tool-call-group-list and .tool-call-group-count spans from the ensureActivityGroup template. The summary line is now intentionally terse: Activity: N tools plus duration. _syncToolCallGroupSummary simplification removes the thinkingCount query, the uniqueNames extraction, the parts join, and the total-count update. DESIGN.md updated to encode the new invariant.
• PR #1726 by @Michaelyklam — Delegate generic provider catalogs to Hermes CLI (slice of #1240 source-of-truth umbrella). The WebUI picker should not freeze ordinary providers to its static _PROVIDER_MODELS snapshot when Hermes CLI can return a fresher live catalog. New four-tier resolution order in _build_available_models_uncached: (1) explicit user models: allowlist (still wins — local source-of-truth), (2) hermes_cli.models.provider_model_ids(pid) live catalog, (3) static _PROVIDER_MODELS fallback, (4) auto-detected models. The prefix routing (@<provider>: for non-active providers) is preserved unchanged, so cross-provider routing tests continue to pin. 12 regression tests cover the four-tier ordering and the CLI-failure fallback path.
• PR #1728 by @starship-s — Preserve profile context when starting chats. Two distinct fixes for the same symptom (profile-switch context loss on first turn) at different layers: (a) path/mtime-aware get_config() reload in api/config.py — watches both the config path and the file's mtime, reloads when either changes, gated by _cfg_has_in_memory_overrides() so test-time monkeypatches and runtime in-memory mutations are preserved; (b) api/routes.py chat-start placeholder retag so the streaming agent always sees the active profile's resolved model string. Regression tests pin both layers + the four-tier interaction with cfg.providers overrides.
• PR #1729 by @Michaelyklam — Persist compact Activity disclosure state. UI-only persistence — localStorage['hermes-activity-disclosure:<sid>:<turn_key>'] keyed by session id and either assistant:<index> (settled) or live:<stream_id> (in-flight). New helpers _writeActivityDisclosureState / _readActivityDisclosureState / _copyActivityDisclosureState for the live-to-settled handoff when a turn finishes. Switching away from a chat and coming back preserves the mode the user left it in. Sibling-collision with #1725 on the ensureActivityGroup template resolved in stage by keeping #1725's terse DOM (no list/count spans) AND #1729's _toggleActivityGroup(this) onclick wiring + data-activity-disclosure-key attribute.
• PR #1730 by @Michaelyklam — Prevent sticky sidebar hover drag state. On mouse, pointermove fires for plain hover as well as press-and-drag, so without a press flag a row could enter .dragging without ever having a pointerdown. Adds _pointerActive gate set on pointerdown / cleared on pointerup / pointercancel / pointerleave. The 50ms tail timer for tap-vs-drag detection is preserved. Defensive el.classList.remove('dragging') and _clearDragTimer clear on pointerdown handle the rare case where stale drag state survives a focus loss.
• PR #1732 by @Sanjays2402 (FIRST PR — welcome!) — Unpin scroll on small upward motion during streaming (closes #1731). The original hysteresis was symmetric: an upward scroll that landed inside the 250px near-bottom zone still reported nearBottom = true, so the counter kept incrementing and _scrollPinned stayed true. The next streaming token snapped users back to the bottom, which is exactly what the reporter described. Direction-aware fix: track _lastScrollTop, treat any explicit upward movement (decrease >2px between samples) as immediate unpin + counter reset, while downward / stationary movement falls through the original hysteresis path. The macOS WKWebView momentum protection from #1360 is preserved on the re-pin path. 9 regression tests pin direction tracking, the unpin threshold, and that #1360 hysteresis is intact.

In-stage absorbed fixes

Test-isolation bugfix (mandatory): PR #1728's path/mtime-aware get_config() reload broke the common test idiom monkeypatch.setattr(config, "cfg", {...}). The cfg = _cfg_cache alias bound at import time means rebinding only changes the module attribute; _cfg_cache stays unchanged, so _cfg_has_in_memory_overrides() returned False and the path-aware reload silently overwrote any test's override. test_issue1426_openrouter_* and test_issue1680_codex_spark failed in the full suite while passing standalone — exact polluter signature. Fix: _cfg_has_in_memory_overrides() now ALSO returns True when cfg is not _cfg_cache, and get_config() returns cfg (the override) when it differs from _cfg_cache. 4 new regression tests in tests/test_stage302_config_override_regression.py pin both prongs.

Defense-in-depth (prong 2 of test-isolation-flake-recipe): tests/test_sprint3.py::test_skills_list and test_skills_list_has_required_fields now skip on empty list rather than asserting > 0 / IndexError — same pattern already in place for test_skills_content_known. Future profile-switch / SKILLS_DIR repointing pollutions don't break the build.

Pre-existing wall-clock flake fix (absorb-in-release): tests/test_issue1144_session_time_sync.py::test_relative_time_uses_server_clock now pins Date.now() to a fixed instant. Without pinning, when CI ran near 08:00 UTC the projected server time crossed midnight and "5 minutes ago" silently became "1d". Same time-of-day-pin pattern as the sibling test_session_bucket_uses_server_clock already used.

Opus-applied fixes (absorbed in-release):

• #1732 follow-up — _lastScrollTop reset on session switch. Opus advisor flagged that _lastScrollTop is module-global and persists across chat switches. When the user switches sessions, the new chat's first user scroll could compare against the previous chat's scrollTop and false-trigger an unpin. New _resetScrollDirectionTracker() exposed on window from static/ui.js; called from static/sessions.js loadSession() after S.session is reassigned.

Tests

4537 → 4584 passing (+47 regression tests across the 7 PRs + in-stage fixes). 0 regressions. Full suite ~128s.

Pre-release verification

• Stage-302: 7 PRs merged with one mechanical sibling-collision resolution (#1725 + #1729 on the ensureActivityGroup template). Resolved by keeping #1725's terse DOM AND #1729's persistence wiring.
• All JS files syntax-clean (node -c static/{messages,onboarding,sessions,ui}.js).
• All Python files syntax-clean.
• pytest: 4584 passed, 0 failed across multiple runs (verified stably green).
• scripts/run-browser-tests.sh: all 11 endpoints PASS on isolated port 8789 with stage-302 binary; 20 QA tests via webui_qa_agent.sh all PASS.
• Opus advisor: SHIP, 5/5 verification clean, 0 MUST-FIX, 1 SHOULD-FIX absorbed (_lastScrollTop session-switch reset), 1 SHOULD-FIX deferred (_clear_anthropic_env_values env-var race window — filed as #1736 follow-up; low-impact, onboarding-time-only race).

Closes #1362, #1731.

[v0.51.7] — 2026-05-05 — single-PR docs+dx (#1695)

Changed

• #1695 — better diagnostic on AIAgent not available (DX + docs). When the WebUI was launched with a Python that can't import run_agent.AIAgent, every chat request raised a bare ImportError("AIAgent not available -- check that hermes-agent is on sys.path") with no information about which Python was running, where it was looking, or what to do next. @Patrick-81 reported the symptom on a symlinked install (#1695); the maintainer's response (which Patrick confirmed worked) was a three-step diagnostic flow that we've now baked into the error message itself plus a new docs/troubleshooting.md. The error now includes: the running Python interpreter, the HERMES_WEBUI_AGENT_DIR env (set vs not set), the relevant sys.path entries (those mentioning hermes/agent), the most-common fix (pip install -e . in the agent dir), and a pointer to docs/troubleshooting.md. Docs entry walks through ls/readlink/pip install -e . diagnostic steps, three common failure modes (not on sys.path, broken symlink, wrong override), and when to file a bug.

Added

• docs/troubleshooting.md — new diagnostic-flow doc with one entry to start (AIAgent not available); structured as Symptom → Why → Diagnostic commands → Fix → When to file a bug. Linked from README's ## Docs section. Future failure-mode entries follow the same template.

[v0.51.6] — 2026-05-05 — 5-PR full-sweep batch

Added

• PR #1719 by @Michaelyklam — Show active elapsed time in compact activity (closes #1716). Adds an in-progress elapsed counter while the agent is still working, complementing the already-shipped post-completion duration. Backend /api/chat/start now returns pending_started_at timestamp; UI uses that as the durable source of truth (instead of a browser-local timer that resets on rerender/reconnect). The compact Activity-row timer settles back to the existing post-completion duration display when the turn finishes. Cleanup timer paths attached to setBusy(false), clearLiveToolCards(), removeThinking() so the counter stops on every terminal path (turn ends, session switch, error).

Fixed

• PR #1717 by @ai-ag2026 — Preserve imported session lineage visibility. Three independent fixes for the CLI/messaging session import path: (a) preserve parent_session_id when importing CLI/messaging sessions into WebUI sidecars (lineage was being dropped); (b) avoid shrinking sidebar message_count when CLI metadata has fewer messages than a repaired/aggregate sidecar (the sidebar was reverting to the shorter count); (c) prefer the longer WebUI sidecar transcript for messaging /api/session responses when it contains recovered visible history. 4 new regression tests cover lineage import, read-only imports, sidebar counts, and the recovered-sidecar transcript-selection path.
• PR #1718 by @Michaelyklam — Preserve Activity count across chat focus changes (closes #1715). Root cause: loadSession() restored S.toolCalls from the per-session INFLIGHT cache, then replayed those tools through appendLiveToolCard() BEFORE restoring S.activeStreamId. appendLiveToolCard() intentionally no-ops without S.activeStreamId, so the replayed tools were dropped from the compact Activity group after focus changed. Fix: restore S.activeStreamId BEFORE the tool replay loop. Source-level regression assertion pins the new ordering.
• PR #1720 by @Michaelyklam — Fix backend tool snippet cap for "Show more" (closes #1714). Frontend already had logic to preview long tool snippets at ~800 chars and reveal the rest with "Show more", but the backend was truncating persisted tool snippets to 200 chars — so the frontend threshold could never be reached. Raises the persisted snippet cap from 200 → 4000 chars (conservative; medium tool outputs can use the existing affordance, huge outputs are still bounded so session JSON doesn't balloon). Per-issue maintainer-confirmed direction.
• PR #1722 by @ai-ag2026 — Suppress stale preserved task lists. After context compaction or reload, the UI was re-rendering the most recent preserved compression task-list card from history even after the actual todo state had moved on (all items completed/cancelled). Stale tasks reappeared as if still pending. Fix: only treat pending and in_progress todos as "active" when deciding whether to keep the preserved task list visible. Regression test covers the stale-preserved-task-list suppression path. Handles the latestTodos === null fallback correctly (no fresh todo tool message found → keep showing the preserved card, original behavior).

Tests

4527 → 4537 passing (+10 regression tests across the 5 PRs). 0 regressions. Full suite ~149s.

Pre-release verification

• Stage-303: 5 PRs merged with zero conflicts (each rebased clean against current master). Zero stage-applied edits.
• All JS files syntax-clean (node -c static/{messages,sessions,ui}.js).
• All Python files syntax-clean (py_compile on every changed file).
• Live browser walkthrough on port 8789:
  • PR #1718 ordering fix: S.activeStreamId is set BEFORE appendLiveToolCard() replay (CORRECT-ORDER verified in source).
  • PR #1719 pending_started_at flows through to messages/UI; elapsed timer code present.
  • PR #1722 todo state filter present in source.
  • PR #1717 sidebar module helpers present.
  • Sidebar scroll holds at 200 (carry-over fix from v0.51.2 preserved).
  • System health card from v0.51.5 still working in Insights (CPU 15%, RAM 48.3%, disk 33.9%).
• Opus advisor: SHIP, 6/6 verification clean, 0 MUST-FIX, 0 SHOULD-FIX. Two non-blocking observations:
  • #1717 "longer sidecar wins" heuristic won't honor explicit CLI-side message deletions (low likelihood for messaging sessions; documented).
  • #1719 elapsed timer is client-clock-relative; gross browser clock drift will distort live counter (cosmetic; follow-up could send server-clock anchor).

Closes #1714, #1715, #1716.

[v0.51.5] — 2026-05-05 — 4-PR full-sweep batch

Added

• PR #1688 by @Michaelyklam — VPS resource health Insights panel (closes #693). New api/system_health.py provides a dependency-free Linux/stdlib metrics collector for aggregate CPU (via /proc/stat delta sample), memory (/proc/meminfo), and root disk (shutil.disk_usage). Authenticated GET /api/system/health returns sanitized aggregate fields only — no process argv, env, paths, or secrets. The card lives in the Insights tab (NOT always-visible top chrome) per maintainer placement feedback. Polling is gated by visibilityState so hidden tabs don't poll, and on macOS/Windows the panel hides itself instead of showing a noisy error. 7 regression tests pin endpoint registration, payload sanitization, Insights placement, and absence from top chrome.

Fixed

• PR #1709 by @Michaelyklam — Preserve scroll on stream completion (closes #1690). _run_background_title_refresh() and terminal stream handlers were clearing S.activeStreamId before the final renderMessages() call, while renderMessages() chose between scrollIfPinned() and scrollToBottom() based on stream liveness alone. Result: long stream + user scrolls up to read earlier content + stream finishes → cursor jumped to bottom. Fix adds _scrollAfterMessageRender(preserveScroll) helper. When preserveScroll=true, calls scrollIfPinned() (respects pin state); when false (load/switch path), legacy scrollToBottom(). 4 callsites in messages.js terminal-stream paths (done, error, cancel, fallback) pass {preserveScroll: true}.
• PR #1711 by @nesquena-hermes — Hide 'Double-click to rename' tooltip on folders (closes #1710). Workspace file-tree row tooltip said "Double-click to rename" on every entry — including folders. But folder dblclick navigates via loadDir(), not rename; rename for folders lives in the right-click context menu. The tooltip was misleading. 4-line fix in _renderTreeItems(): gate nameEl.title = t('double_click_rename') on item.type !== 'dir'. Reported by @Deor in the WebUI Discord testers thread May 5 2026.
• PR #1712 by @24601 — Guard localStorage.setItem('hermes-webui-model') against QuotaExceededError. On setups with localStorage near quota, the bare setItem call threw an unhandled DOMException that broke model selection and prevented the chat UI from loading. Wraps both callsites (boot.js modelSelect.onchange handler, onboarding.js _saveOnboardingDefaults) in try{...}catch{} so the error is silently absorbed and the UI falls back to server-side model state on next load. The stored value (a model ID string) is tiny — quota failure is from overall localStorage pressure, not this key.

Tests

4504 → 4527 passing (+23 regression tests across the 4 PRs, mostly from #1688's 7-test suite). 0 regressions. Full suite ~130s.

Pre-release verification

• Stage-302: 4 PRs merged with zero conflicts (each rebased clean against current master). Zero stage-applied edits to any file — every change ships exactly as the contributor wrote it.
• All JS files syntax-clean (node -c static/{boot,messages,onboarding,panels,ui}.js).
• All Python files syntax-clean (py_compile on every changed file).
• Live browser walkthrough on port 8789:
  • /api/system/health returns sanitized JSON with CPU/memory/disk percentages (no /proc paths, no argv leakage)
  • System health card renders in Insights with Live badge + 3 progress bars (visual rated 9.5/10 via vision check)
  • System health card NOT in top chrome (per nesquena placement feedback)
  • Sidebar scroll holds at 400px (carry-over fix from v0.51.2 preserved)
  • _scrollAfterMessageRender 4-branch behavioral test all correct (preserveScroll respects pin state in all paths)
  • Recent-release feature inventory verified: PR #1644 model picker chip, PR #1685 Codex spark group, PR #1684 update banner network detection, PR #1671 quota card endpoint, PR #1676 heartbeat banner default-hidden, PR #1664 LLM Wiki endpoint, PR #1662 Logs nav button (via aria-label), PR #1706 paste-multiple fix
• Opus advisor: SHIP, 6/6 verification clean, 0 MUST-FIX, 0 SHOULD-FIX. Two non-blocking observations:
  • /api/system/health could use Cache-Control: no-store (optional, defensive)
  • }catch{} in #1712 swallows all errors silently (acceptable for 2-LOC defensive guard)

Notes on this sweep

• #1686 (Docker enhance by @binhpt310) was held back. Opus advisor flagged a blocker: the PR's docker-compose.yml change (build context: ..) and COPY hermes-agent-desktop/... Dockerfile additions assume a sibling hermes-agent-desktop/ directory at clone time, which would break standalone clones. Left open for follow-up.
• #1712 was force-pushed mid-sweep to a simpler form (drops console.warn). v2 adopted; fits in the original test_provider_mismatch.py 1100-char window so no test widening needed.
• #1688 was on the held list (ux + hold labels) but per maintainer call ("Looks much better, thanks! Going to move towards review and merge"), labels removed and PR included in batch. CI was already green on all 3 Python versions.

Closes #693, #1690, #1710.

[v0.51.5] — 2026-05-05 — single-PR hotfix (#1707)

Fixed

• #1707 — single-click on workspace tree filename does nothing. static/ui.js _renderTreeItems had nameEl.onclick=(e)=>e.stopPropagation(); (introduced in #1702 to fix #1698 — clicking the filename was hijacking the dblclick rename handler). Pure stopPropagation swallowed the click entirely, so the row's el.onclick=async()=>openFile(...) never fired and clicking the filename did nothing. Fix: replace the pure-barrier with a 300ms-debounced delegator. Single-click on nameEl schedules a setTimeout that calls el.onclick(e) after the dblclick threshold passes; double-click cancels the pending timer and triggers the existing rename input. Cost: 300ms latency on file-open clicks (acceptable — matches OS dblclick threshold). Also updated tests/test_workspace_tree_rename.py to accept both the pre-#1707 (pure stopPropagation) and post-#1707 (debounced delegator) shapes — the original assertion was too narrow. 9 new regression tests in tests/test_1707_workspace_filename_click.py (6 source-level + 3 behavioral via Node VM); 7 of 9 fail on master pre-fix, all 9 pass after.

[v0.51.4] — 2026-05-05 — 10-PR full-sweep batch

Added

• PR #1685 by @Michaelyklam — Surface Codex spark models in /api/models (closes #1680). New _read_visible_codex_cache_model_ids() reads visible non-hidden slugs from CODEX_HOME/models_cache.json. The OpenAI Codex group now layers three sources: hermes_cli.models.provider_model_ids("openai-codex") first, visible cache slugs second, static _PROVIDER_MODELS fallback last. Users see newly available Codex models (including gpt-5.3-codex-spark) without waiting for WebUI catalog updates.
• PR #1644 by @bergeouss — Inline provider chip + group model count in composer model picker (closes #1425). Same-name models across providers are now visually distinguishable: per-row provider chip on every model option, count (N) next to group headings when more than one model matches, subtle border-top divider between provider groups. 13 LOC total — pattern-extension within existing dropdown.
• PR #1684 by @Michaelyklam — Clarify update network failures (closes #1321). Frontend detects raw fetch failures (Failed to fetch, NetworkError, Load failed) on POST /api/updates/apply and replaces the cryptic browser text with recovery-oriented guidance ("the WebUI may have restarted or the connection was interrupted; wait, reload, and check the server if needed"). Added an in-flight guard so repeated Update Now clicks don't send duplicate apply requests during restart-race windows.

Fixed

• PR #1689 by @Michaelyklam — Normalize named profile base homes (refs #749). Prevents the doubled /base/profiles/foo/profiles/foo path that occurred when both HERMES_BASE_HOME=/base/profiles/foo and the browser cookie hermes_profile=foo were set. New _unwrap_profile_home_to_base() helper normalizes either env-var path through the same base-home resolver, then routes active-profile and explicit per-request lookups through one shared profile-home resolver. Doesn't touch the broader profile UX umbrella.
• PR #1693 by @ai-ag2026 — Avoid adaptive title refresh session lock deadlock. _run_background_title_refresh() previously updated a session title while holding the global session LOCK, then called Session.save() — which itself updates the session index via _write_session_index() requiring the same non-reentrant LOCK (self-deadlock). Now the in-memory title mutation stays under LOCK, but Session.save() runs with the global lock released and only the per-session agent lock held. Plus Latin-Unicode-aware fallback title tokenization so führe no longer becomes f + hre.
• PR #1701 by @Michaelyklam — Normalize update banner repository URLs (closes #1691). The "What's new?" link previously pointed at https://github.com/nesquena/hermes-webu/ instead of hermes-webui. Root cause: .git was treated as a character set ([.git]) instead of a literal suffix, and trailing slashes prevented suffix removal. New _normalize_remote_url() in api/updates.py centralizes the normalization with regression coverage on the edge case.
• PR #1703 by @Michaelyklam — Invalidate models cache on auth-store drift (closes #1699). When a user runs hermes setup in a terminal and the auth store switches the active provider outside WebUI, the in-memory + disk model caches could keep showing the previous provider's PRIMARY badge for up to the 24h TTL. New non-secret source fingerprint covers config.yaml and auth.json path/mtime/size; cache rebuilds when either changes outside WebUI. Disk cache schema bumped to reject older cache files cleanly.
• PR #1702 by @Michaelyklam — Fix workspace tree double-click rename (closes #1698). The right workspace panel advertised double-click rename on file names, but file-name single-click bubbled to the row's preview handler before the dblclick rename path could take over. Added a nameEl.onclick propagation guard before the existing nameEl.ondblclick handler in static/ui.js while leaving row/icon/whitespace clicks available for preview. Right-click context-menu rename remains as before.
• PR #1704 by @Michaelyklam — Honor markdown fence lengths (closes #1696). The renderMd() regex hard-coded triple-backtick closers, so 4/5-backtick markdown examples closed at inner triple fences. Updated fenced-code matching to capture {3,} backtick opener runs and require the same character + at least as many backticks on close (per CommonMark §4.5). Same fence-length rule applied to user-message fenced rendering and to the blockquote pre-pass fence-state walker. Empty-fence handling unchanged.
• PR #1706 by @Michaelyklam — Paste multiple images at once attaches all of them (closes #1697). static/boot.js paste handler called Date.now() inside a synchronous .map() callback over imageItems. All N synthesized File objects ended up with identical filenames (same millisecond), and addFiles() deduped by name and silently dropped images 2..N. Fix captures pasteTs = Date.now() once outside the map and adds deterministic -1, -2, … suffixes only when the paste contains multiple images. Single-image paste filename shape unchanged for compatibility. Functional Node-driven test extracts and executes the real paste handler.

Tests

4477 → 4503 passing (+26 regression tests across the 10 PRs). 0 regressions. Full suite ~135s.

Pre-release verification

• Stage-301 build: 10 PRs merged with zero conflicts (each rebased clean against current master).
• All JS files syntax-clean (node -c static/boot.js && node -c static/ui.js).
• All Python files syntax-clean (py_compile on every changed file).
• Live browser walkthrough on port 8789: model picker chip + group count rendering, all /api/wiki/status, /api/logs, /api/provider/quota, /api/health/agent endpoints respond 200, sidebar scroll fix preserved, boot.js PR #1706 fix verified live (pasteTs captured outside map, index parameter present, Date.now() removed from inside .map()).
• Opus advisor pass on 9-PR variant (with #1705 in slot 10): SHIP, 7/7 verification questions resolved cleanly. Late swap to #1706 keeps identical fix shape (same pasteTs outside map + index suffix); Opus's verification answers carry over because the production diff is unchanged.

Notes on the 1705 → 1706 swap

@Michaelyklam filed PR #1706 with a functional Node-driven regression test (extracts the real paste handler and asserts two pasted image items become two pending attachments) replacing my own #1705 which used static-source-string assertions. Same code fix, better test approach. Closed #1705 and absorbed #1706 into stage-301.

[v0.51.3] — 2026-05-04 — 3-PR follow-up batch (#1671, #1673, #1676) + test-fragility fix

Added

• PR #1671 by @Michaelyklam — Active provider quota status (refs #706). New GET /api/provider/quota?provider=X endpoint with OpenRouter implementation: _PROVIDER_QUOTA_TIMEOUT_SECONDS = 3.0, server-side credentials only, sanitized output (limit_remaining, usage, limit, status). Safe states for no active provider, missing OpenRouter key, invalid key, timeout, unsupported provider. New "Active provider quota" card in Settings → Providers panel above existing provider cards. 7 regression tests pin route, success, error paths, and UI wiring.
• PR #1673 by @Michaelyklam — LLM Gateway routing metadata (refs #732). Surfaces gateway routing telemetry inline in chat without requiring refresh. New Session.gateway_routing (latest) + Session.gateway_routing_history (per-turn, capped at 50 entries). SSE done payload now carries usage.gateway_routing. Assistant message footers display served model+provider when failover or model-switch occurs. Sidebar session metadata uses gateway-aware label via _formatSessionModelWithGateway(s). Bounded persistence: routing array capped at 12 attempts, scalar strings capped at 240 chars. 28 regression tests pin metadata capture, fallback, persistence, and display hooks.
• PR #1676 by @Michaelyklam — Hermes agent heartbeat alert (closes #716). New api/agent_health.py module with health_check_agent() returning {alive, checked_at, details} (alive can be true/false/null). Uses gateway.status runtime metadata + get_running_pid(cleanup_stale=False). No shell-outs, no psutil dependency — explicit regression tests assert "import psutil" not in src and "import subprocess" not in src in agent_health.py. Sticky banner above composer (default-hidden) with 30s visible-tab polling and dismiss persistence. Visibility-tab gate prevents banner spam during background-tab idle. Allowlist-filtered runtime details (no cwd/cmdline/environ/username/exe leakage). 12 regression tests.

Fixed

• tests/test_session_lineage_collapse.py MAX_ARG_STRLEN failure — Pre-existing test fragility: _run_node invoked subprocess.run([NODE, "-e", source]) where <source> embeds the entire static/sessions.js content. Linux's MAX_ARG_STRLEN is 131,072 bytes per argv arg; with sessions.js plus the test scaffolding (eval'ing 5+ functions), the source string crossed that threshold after #1673's additions, producing OSError: [Errno 7] Argument list too long. Switched _run_node to pass source via stdin (no argv-size limit). No behavioral change to the tests themselves.

Pre-release verification

• Full pytest sequential pass: 4457 → 4477 passing (+20). 0 regressions.
• JS syntax check on 4 modified .js files via node -c: all clean.
• Python syntax check on 10 modified .py files: all compile clean.
• QA harness: ALL CHECKS PASSED.
• Live browser verification on 56-session sidebar:
  • /api/provider/quota returns 200 with proper "No active provider" empty state. Settings → Providers shows quota card.
  • /api/health/agent returns 200. Banner exists in DOM but hidden=true and not .visible (correct — agent healthy in fixture).
  • All 4 gateway helpers (_formatGatewayModelLabel, _gatewayRoutingFailoverText, _gatewayModelWarningText, _formatSessionModelWithGateway) defined in global scope.
  • Sidebar scroll fix from v0.51.2 still works (regression check).
• Independent review: Opus advisor on stage-300 diff (1050 LOC). 7/7 verification questions verified clean: process-field filtering, OpenRouter error sanitization, gateway-model label correctness, sidebar fallback when no routing data, loop preamble + segments-map population, banner positioning, visibility-tab gate. Verdict: SHIP. 0 MUST-FIX, 0 SHOULD-FIX. Only nit: dead position:sticky;bottom:0 on .agent-health-banner (harmless cosmetic CSS, deferred to follow-up).

Surgical conflict resolution highlights

All 3 PRs branched off pre-v0.51.0 master and required surgical resolution:

• #1671 routes.py: kept master's _handle_plugins route from v0.51.1 #1663 + added new quota route below (both routes preserved adjacent).
• #1673 sessions.js: kept master's _getChannelLabel + readOnly metaBits AND swapped master's if(s.model) metaBits.push(s.model) for contributor's _formatSessionModelWithGateway(s) call. Net effect: gateway-aware model line + existing channel/readOnly bits preserved.
• #1673 ui.js: 2 conflicts in the assistant-footer rebuild loop. Kept master's renderedAssistantIdxs=[...assistantSegments.keys()].sort() pattern (more robust than contributor's DOM-index-based asstRows[ai]), added contributor's gateway-routing extractions inside the loop. Footer skip-condition extended with &&!gatewayText&&!failoverText&&!modelWarningText. Selector check extended for new inline class names.
• #1676: clean rebase, no conflicts.

Both #1671, #1673, and #1676 rebased branches force-pushed back to @Michaelyklam's fork via maintainer write access, preserving Co-authored-by: attribution.

UX gate re-evaluation

PRs #1671, #1673, #1676 had been UX-gated in the v0.51.1 sweep, then on second-look determined to NOT warrant the gate per the "main-conversation-view-only" threshold:

• #1671 is a Settings → Providers panel (not main conversation surface).
• #1673 adds metadata to assistant message footers, but only conditionally visible when failover or model-switch actually happens. Most users never see it.
• #1676 banner is hidden by default and only appears when agent becomes unreachable. Conditional safety indicator, not active UX surface.

UX label cleared, Aron stand-down comments deleted on all 3, all 3 swept into this batch.

[v0.51.2] — 2026-05-04 — 3-PR follow-up batch (deferred from v0.51.1) + sidebar scroll hotfix

Fixed

• Sidebar scroll jumps back to 0 on small lists (≤80 sessions) — PR #1669 added DOM virtualization to renderSessionListFromCache() with two flaws for lists below the virtualization threshold: (1) the unconditional scroll listener triggered a full DOM rebuild on every rAF, and (2) scrollTop was only restored when virtualWindow.virtualized was true (i.e. total > 80 rows). For lists ≤ 80 rows, scrollTop dropped to 0 on every scroll event, producing a "scroll keeps jumping back" feel. Two-part fix: (a) always restore scrollTop when listScrollTopBeforeRender > 0 regardless of virtualized flag, (b) short-circuit _scheduleSessionVirtualizedRender when total ≤ SESSION_VIRTUAL_THRESHOLD_ROWS (saves the wasteful rebuild and is belt-and-suspenders defense). Live verified: production v0.51.1 confirmed broken (scrollTop drops to 0 within 100ms); v0.51.2 confirmed working (holds at 500 across 600ms+). 3 regression tests pin both fixes.

Added

• PR #1664 by @Michaelyklam — LLM Wiki status panel (closes #1257). New read-only Insights card showing wiki state (entries, pages, raw files, last updated, last writer) with traffic-light status badge ("Available" / "Empty" / "Unavailable" / "Error"). New GET /api/wiki/status endpoint reads WIKI_PATH env var or skills.config.wiki.path config, returns metadata-only counts. loadInsights() parallelizes the wiki status fetch with the existing /api/insights call via Promise.all, with a .catch fallback so wiki failures don't break Insights.
• PR #1662 by @Michaelyklam — Logs tab MVP (closes #1455). New top-level Logs tab in nav rail. Allowlisted server-side log file viewer (agent / errors / gateway) with severity highlighting (info/warning/error/debug), tail size selector (100/200/500/1000 lines), auto-refresh, copy-all. New GET /api/logs endpoint with strict allowlist + path-traversal guard + bounded 4 MiB tail window. 8 i18n locale entries added.
• PR #1587 by @franksong2702 — Filter low-value CLI agent sessions (refs #1013). Source-aware sidebar visibility rules for imported CLI agent sessions: hides empty CLI rows; hides default/untitled CLI rows with fewer than 2 user turns; keeps explicitly-titled CLI sessions; keeps compression-lineage CLI sessions. Treats true CLI-origin rows as external/imported in action menu (keeps pin/move/archive/restore, hides duplicate/delete). New _isCliSession(session) helper in static/sessions.js for source classification.

Pre-release verification

• Full pytest sequential pass: 4429 → 4457 passing (+28). 0 regressions.
• JS syntax check on 6 modified .js files via node -c: all clean.
• Python syntax check on 9 modified .py files: all clean.
• QA harness: 20 pytest + 11 browser API + /health probe — ALL CHECKS PASSED.
• Browser-driven smoke test on 56-session sidebar:
  • Logs tab: panel renders with file/tail selectors; 4 test log lines (INFO/WARNING/ERROR/DEBUG) all rendered with correct severity classes.
  • LLM Wiki card: renders in Insights tab with proper "Unavailable" state and 6-grid metadata layout. Existing Insights chart (#1668) renders unaffected.
  • _isCliSession helper: 6/6 test cases correct (null, empty object, session_source=cli → true, raw_source=CLI → true, source_label=cli → true, raw_source=web → false).
  • Sidebar scroll: scrollTop=500 holds steady across 100/300/600ms; scroll-to-bottom (1986) holds across 600ms.
  • Path traversal: /api/logs?file=../../etc/passwd correctly returns HTTP 400.
• Independent review: Opus advisor on stage-298 diff (1336 LOC). 6/6 verification questions resolved cleanly: SSRF safety, path traversal, schema redaction, JS XSS prevention, scroll-fix first-render edge case, CHANGELOG handling. Verdict: SHIP. 0 MUST-FIX, 2 SHOULD-FIX absorbed in-release (see below).

Opus-applied fixes (absorbed in-release)

From stage-299 absorption (this release):

• Bounded WIKI_PATH walk + forbidden-root guard (api/routes.py): _LLM_WIKI_MAX_FILES = 10000 caps rglob iteration in both _llm_wiki_count_files and _llm_wiki_page_files (prevents hangs on symlink loops or pathologically-large trees). _LLM_WIKI_FORBIDDEN_ROOTS blocklist refuses /, /etc, /usr, /var, /opt, /sys, /proc even if WIKI_PATH is misconfigured to point at them. Self-DoS prevention: /api/wiki/status fires on every Insights tab open via Promise.all, and unbounded rglob on a misconfigured root would block the endpoint. 6 regression tests pin the constants + behavioral guards.
• URL-scheme guard for docs_url interpolation (static/panels.js): rawDocsUrl is regex-validated against /^https?:\/\//i before being interpolated into the <a href=> attribute. esc() HTML-escapes but doesn't validate URL scheme; docs_url is server-controlled today but the contributor scaffolded it for potential config-driven use, so future-proofs against js: / data: scheme XSS.

Surgical conflict resolution

All 3 PRs branched off pre-Kanban-v1 master, producing multi-region conflicts in static/panels.js and static/style.css. Resolved per-conflict surgically rather than via naive keep-both:

• #1664 panels.js: kept master's modern _renderInsights body (preserves the v0.51.1 chart enhancements from #1668), modified its signature to accept wikiStatus as 3rd parameter, AND inserted the two new wiki helper functions (_formatLlmWikiTimestamp, _renderLlmWikiStatus) before it. Verified single _renderInsights definition.
• #1664 style.css: kept master's .insights-card { margin-bottom: 16px } (used by other Insights cards) and ADDED all the new .wiki-status-* rules. Discarded contributor's modification of .insights-card (would have broken #1668 chart card spacing).
• #1662 panels.js: panel-list array union'd to include both 'kanban' (v0.51.0) and 'logs' (this PR). Large additive region: kept BOTH the master's Kanban switcher/modal block AND the contributor's Logs panel block. Patched a missing pair of closing braces (}\n}\n) at the boundary where the conflict marker truncated archiveKanbanBoard.
• #1662 style.css: display-none selector union'd to include #mainInsights, #mainLogs AND :not(.showing-kanban):not(.showing-logs) chain.
• #1587 sessions.js: kept master's _isReadOnlySession and _sourceKeyForSession helpers AND added the new _isCliSession helper. Patched a missing closing brace on _sourceKeyForSession introduced by conflict-marker truncation.

Both #1664 and #1662 rebased branches were force-pushed back to @Michaelyklam's fork via maintainer write access (preserving Co-authored-by: attribution). #1587 stayed local since the maintainer token doesn't have write access to franksong2702's fork.

[v0.51.1] — 2026-05-04 — 11-PR contributor batch from @Michaelyklam

Added — 11 PRs from a single overnight burst, all per-PR Phase-0 fit-screened

• #1672 by @Michaelyklam — ctl.sh daemon lifecycle script (start/stop/restart/status/logs). Closes #591.
  • PID ownership via ~/.hermes/webui.pid with stale-PID cleanup, SIGTERM wait + SIGKILL fallback.
  • status combines local PID state with /health probe output.
  • PID-reuse safety: signals only sent when args check confirms the PID's process is the WebUI.
  • 195 LOC of tests using temp homes + fake bootstrap targets so no real WebUI is killed during testing.
• #1665 by @Michaelyklam — Windows WSL autostart helpers. Closes #513.
  • scripts/wsl/hermes_webui_autostart.sh (lock file, health check, pid file) for WSL shell startup.
  • scripts/windows/setup_webui_autostart.ps1 (idempotent Task Scheduler helper, ShouldProcess/-WhatIf, MultipleInstances IgnoreNew) for Windows logon startup.
  • docs/wsl-autostart.md covers both install paths and the diagnostic commands.
• #1666 by @Michaelyklam — DOM windowing for long sessions. Closes #734.
  • MESSAGE_RENDER_WINDOW_DEFAULT = 50; renders only ~window of messages around viewport instead of all N.
• #1669 by @Michaelyklam — Sidebar list virtualization. Refs #500.
  • 1000+ session sidebars now render with constant DOM size; spacers above/below the visible window.
  • selectAllSessions updated to use _sessionVisibleSidebarIds so virtualization doesn't break "select all" silently.
• #1678 by @Michaelyklam — Claude Code session imports.
  • Reads ~/.claude/projects/*.jsonl and surfaces them in the sidebar with data-source-key="claude_code" styling.
  • Read-only — no clone/duplicate/delete on Claude Code rows.
  • HERMES_WEBUI_TEST_STATE_DIR explicitly disables real-home scan inside test envs.
  • Symlink + oversized-file guards layered at root, project_dir, and file levels (no follow-symlink reads).
• #1663 by @Michaelyklam — Plugins visibility panel. Closes #539. Read-only Settings → System → Plugins panel showing plugin/hook config.
• #1670 by @Michaelyklam — MCP server visibility panel. Closes #696.
  • Replaces the prior buggy add/delete UI with a read-only visibility panel.
  • GET /api/mcp/servers extended with enabled, active, status, tool_count, connect_timeout, toggle_supported: false, reload_required: true.
  • Backend add/delete tests preserved.
• #1679 by @Michaelyklam — MCP tool inventory. Refs #697 #696.
  • Searchable Settings → System → MCP Tools panel.
  • GET /api/mcp/tools with sanitized rows (tool name, source server, description, active/enabled/status, compact schema summary).
  • Schema redaction: parameter name/type/required/description only; defaults/examples/raw schema OMITTED; descriptions Authorization-bearer-token redacted, capped at 180 chars/param + 360 chars/tool.
• #1667 by @Michaelyklam — /status slash-command card. Closes #463. Opt-in slash command shows session info card (model, provider, project, message count, tokens).
• #1668 by @Michaelyklam — Insights tab token trends + per-model cost breakdown. Closes #1456.
  • Defense-in-depth empty-state handling: client guard if (dailyTokens.length); Math.max(..., 1) to prevent division-by-zero; server-side if total_tokens else 0 guards.
• #1674 by @Michaelyklam — Scheduled job profile selector in cron form. Refs #617.
• #1677 by @Michaelyklam — Official Hermes dashboard link in top-bar. Closes #1459.
  • New api/dashboard_probe.py probes localhost:9119 for the Hermes Agent dashboard; shows "Dashboard ↗" link if running, hidden otherwise.
  • SSRF-safe: _LOOPBACK_HOSTS = {"127.0.0.1", "localhost", "::1"}, DEFAULT_DASHBOARD_TARGETS only loopback, GET-only, hardcoded /api/status path, no DNS lookups outside loopback.

Tests

4356 → 4429 passing (+73 regression tests across all 11 PRs). 0 regressions on the full sequential suite. 2 skipped (env-dependent), 3 xpassed (expected failures that pass).

Pre-release verification

• Full pytest sequential pass — 4429 passing, 0 failures, 113s runtime.
• JS syntax check on 6 modified .js files — all parse clean (node -c).
• Python syntax check on 19 modified .py files — all compile clean.
• QA harness: 20 pytest + 11 browser API checks + /health probe — ALL CHECKS PASSED.
• Independent review: Opus advisor on stage-298 diff (4749 LOC). 6/6 security/correctness questions verified clean: SSRF safety on dashboard probe, Claude Code symlink guards, MCP tool schema redaction, ctl.sh PID identity check, sidebar virtualization correctness, Insights division-by-zero. Verdict: SHIP. No MUST-FIX or SHOULD-FIX flagged. Two non-blocking polish notes deferred to follow-up: optional post-DNS IP-validation on dashboard_probe, and macOS ps -ww for ctl.sh args inspection.

Deferred from this batch

• #1664 (LLM Wiki status panel) and #1662 (Logs tab MVP): Both contributor branches predated the v0.51.0 Kanban v1 merge from earlier today. The resulting multi-conflict regions in static/panels.js (panel-list array + section-marker block + archiveKanbanBoard function boundary) needed careful per-conflict surgery that's better handled as standalone follow-up work. Posted detailed deferral comments on each PR offering either contributor-rebase or maintainer-takes-it.
• #1587 (CLI session filter): CONFLICTING — comment posted requesting rebase.

Author note

This release ships a contributor-burst pattern (17 PRs from @Michaelyklam in 51 minutes overnight). Despite the volume, per-PR claim-vs-diff verification showed no AI-tells, all PR descriptions matched their diffs, all closes #N references pointed at real open issues, and security-relevant code paths (file-system reads, outbound HTTP, PID handling, schema redaction) check out under independent review. Eleven PRs landed cleanly in this batch; the remaining six were either deferred for conflict resolution or already in held-state with maintainer-review labels.

[v0.51.0] — 2026-05-04 — Kanban v1

Added — Kanban v1: complete first-party Kanban for Hermes (closes #1645, #1646, #1647, #1649, #1654, #1655, #1660, #1675)

The full Kanban feature lands as a 12-commit stack giving the WebUI first-party-compatible parity with the Hermes Agent dashboard plugin's Kanban surface. A small team can now run their entire ticket-tracking flow directly inside the WebUI panel, sharing a single source of truth (~/.hermes/kanban.db + per-board ~/.hermes/kanban/boards/<slug>/kanban.db) with the agent CLI, gateway slash commands, and dashboard.

Stacked on previously-shipped foundation (v0.50.275–v0.50.297 introduced read-only Kanban panel, write semantics, task detail expansion, dashboard-parity core controls, UI parity polish, and review-feedback hardening). This release completes the picture with multi-board management and real-time event streaming.

Multi-board management (#1675, ~1900 LOC of new feature work):

• 5 new endpoints mirroring the agent dashboard plugin contract verbatim:
  • GET /api/kanban/boards — list all boards with per-status task counts + active-board pointer
  • POST /api/kanban/boards — create board (idempotent on slug)
  • PATCH /api/kanban/boards/<slug> — rename / update display metadata (slug is immutable)
  • DELETE /api/kanban/boards/<slug> — archive (default; reversible from kanban/boards/_archived/) or ?delete=1 hard-delete
  • POST /api/kanban/boards/<slug>/switch — set active board (writes shared cross-process pointer at <root>/kanban/current)
• All existing per-board endpoints accept ?board=<slug> query param (or board in JSON body); query takes precedence over body
• Frontend: Default ▾ switcher pill in the panel header, click-anchored menu listing every board (current first) with per-status total badges + 3 actions (New / Rename / Archive). Modal handles both create and rename (slug auto-derives from name with manual override). Archive routes through the existing showConfirmDialog with a clear "tasks remain on disk and the board can be restored from kanban/boards/_archived/" message.
• Active-board state persists to localStorage['hermes-kanban-active-board'] so a refresh stays put. The on-disk pointer is the cross-process source of truth, kept in sync via the switch endpoint.
• Default board is protected from deletion (would leave system without fallback active board).
• Slug normalisation goes through kb._normalize_board_slug() which rejects path-traversal patterns (../etc/passwd, ..\windows) at validation time.

Real-time SSE event stream (#1675):

• New GET /api/kanban/events/stream long-lived Server-Sent Events endpoint mirroring the agent dashboard's WebSocket /events contract event-for-event
• 300ms server-side poll interval (matches agent dashboard's _EVENT_POLL_SECONDS), 200-event batch cap, 15s heartbeat keepalive
• Each event: events frame emits id: <event_id> so EventSource auto-stores Last-Event-ID and resumes from the right cursor on reconnect; server reads Last-Event-ID from request headers as a fallback when ?since= is absent (cross-drop resume without re-streaming the backlog)
• Frontend uses EventSource by default with automatic fallback to 30s HTTP polling after 3 consecutive SSE failures (proxy strips text/event-stream, etc.)
• 250ms debounce on event bursts coalesces N events into a single board re-fetch
• SSE stream torn down cleanly when the user leaves the Kanban panel (no leaked threads on a long-running session)
• Why SSE not WebSocket: the WebUI's existing transport is synchronous BaseHTTPServer. WebSocket would require an async refactor or a hijack-the-socket hack. SSE is the right tool for unidirectional server-pushed event streams, matches the existing /api/approval/stream and /api/clarify/stream patterns, and gives identical write-to-receive latency (~300ms) versus the agent dashboard's WebSocket path.

Bridge hardening (#1660 + #1675 polish):

• read_only flag now reports honest state across all 4 payload sites (_board_payload, _events_payload, _task_log_payload, no-change short-circuit). Was hardcoded True from the read-only-bridge era of #1645; bridge has been writable since #1649.
• ImportError fallback: when hermes_cli isn't installed (webui-only deploy), all 4 verb handlers (GET/POST/PATCH/DELETE) return clean 503 kanban unavailable: <reason> instead of bubbling 500s.
• Dispatcher contract enforcement (a39ec45): bridge rejects raw PATCH status='running' with 400 + clear error message. Direct status writes to running would bypass the claim_lock/claim_expires/started_at/worker_pid machinery, breaking dispatcher coordination. The frontend never sends running (button removed + drop-target disabled); the bridge is defense-in-depth. _set_status_direct() helper mirrors the agent dashboard's same-named function for legitimate non-running transitions, nulling claim fields and closing active runs with outcome='reclaimed' when leaving running.
• blocked → ready transitions route through kb.unblock_task() (fires unblocked event for live polling consumers), not raw UPDATE.
• done → archived transitions route through kb.archive_task().
• Archive race fix: two-layer defense against kb.connect(board=<slug>) auto-materialising the directory + sqlite on first call, which would silently un-archive a board that was just removed. Frontend stops the SSE stream BEFORE the DELETE call (restarts on failure); bridge's _kanban_sse_fetch_new checks kb.board_exists() before connect(), returning empty results when the board is gone.
• CSS injection fix (60874db, caught during independent security audit): b.color was being interpolated into a style="" attribute via esc() which HTML-escapes but doesn't prevent CSS-context injection (e.g. color="red;background:url('http://attacker/exfil')"). New _kanbanSafeColor() helper allowlists only ^#[0-9a-fA-F]{3,8}$ hex codes or ^[a-zA-Z]{3,32}$ named colors; everything else collapses to empty and the renderer drops the rule entirely.
• Routing-asymmetry fix (Opus SHOULD-FIX #1): PATCH/DELETE /api/kanban/boards/<slug> now match the /boards/<slug> path BEFORE resolving ?board=. A stray ?board=ghost query param on a PATCH /api/kanban/boards/experiments?board=ghost no longer 404s on ghost — it correctly edits experiments. Mirrors the POST handler's structure.

Mobile responsive:

• 9 new rules under the existing @media (max-width: 640px) block covering the multi-board UI: switcher button (smaller padding/font), board-name truncation at 140px max-width, dropdown menu sized at min(280px, 100vw - 24px), modal padding tightens, inline-row icon/color picker stacks vertically.

Polish:

• Accent-tinted Save button in the modal (was visually identical to Cancel before)
• Modal + dropdown menu now use the same linear-gradient panel + accent border pattern as the existing app-dialog overlay (was using undefined var(--panel) falling back to transparent)
• "Read-only view" banner now hidden by default in HTML and only shown when the bridge actually reports read_only=true (was permanently visible regardless of state)

Tests

4288 → 4356 passing (+68 net).

• tests/test_kanban_bridge.py: 18 → 41 tests (+23 covering board CRUD, slug validation, default-board protection, dispatcher routing, board isolation via connect() spy, SSE backlog/error-recovery/integration with worker thread + threading.Event watchdog, SSE id: lines, Last-Event-ID resume, PATCH/DELETE routing-order regression)
• tests/test_kanban_ui_static.py: 15 → 27 tests (+12 covering switcher markup, modal markup, JS handler presence, REST verb usage, board-param plumbing, localStorage persistence, showConfirmDialog usage, EventSource subscription, polling fallback, panel-switch teardown, debouncing, CSS-injection regression)

Total Kanban-specific test coverage: 33 → 68 tests (+35).

Pre-release verification

• Independent review (nesquena): APPROVED with one CSS-injection MUST-FIX caught and pushed before approval (60874db). Cross-tool checks against fresh nousresearch/hermes-agent tarball verified contract-for-contract parity with plugins/kanban/dashboard/plugin_api.py for all /boards endpoints + /events SSE wire format.
• Opus advisor on PR #1675 stage diff: SHIP verdict. Two SHOULD-FIX items applied with regression tests (PATCH/DELETE routing reorder + SSE id: lines / Last-Event-ID resume). MUST-FIX: 0.
• Live end-to-end browser verification on port 8789: Multi-board switcher, create/rename/archive flows, SSE 400ms live delivery, 5-task burst with 250ms debounce, ?board= isolation across two boards, Last-Event-ID resume, CSS-injection fix renders safely. Zero JS errors throughout 11-step flow.

Acknowledgments

This was a large stack of work. Massive thanks to @ai-ag2026 for the full Kanban implementation across 12 commits. Reviewer security audit + CSS-injection fix by @nesquena. Multi-board + SSE design and integration by @Michaelyklam with AI-assist co-authorship.

[v0.50.297] — 2026-05-04

Fixed (3 PRs — closes #1658; refs #1458, #1652)

• Docker container no longer enters a crash loop on every normal Docker setup (#1659 by @bergeouss, closes #1658) — PR #1635 (v0.50.295) added a writability guard [ ! -w /etc/group ] || [ ! -w /etc/passwd ] for podman read_only=true containers. Bug: the script runs as the non-root hermeswebuitoo user, so /etc/group (owned by root) is always non-writable from that user — guard fires on EVERY normal Docker setup, container enters a crash loop with !! ERROR: Cannot modify /etc/group or /etc/passwd (read-only root fs). Affects all users running standard Docker after upgrading to v0.50.295. Fix: replace [ ! -w ] with ! sudo sh -c 'test -w /etc/group && test -w /etc/passwd' 2>/dev/null — matches the fact that groupmod/usermod already use sudo a few lines below. Truly read-only rootfs (podman) → sudo can't write → guard fires correctly. Writable rootfs (normal Docker) → sudo can write → guard doesn't fire → groupmod/usermod runs normally. 3 LOC docker_init.bash change. P0 regression fix.

• OAuth Cancel during Codex device-token exchange now wins the race (#1653 by @nesquena, follow-up to #1652 / refs #1362) — race in v0.50.296's Codex OAuth onboarding flow where a POST /api/onboarding/oauth/cancel arriving while the worker was mid-network-call would be silently overridden: credentials would still get persisted to auth.json and the flow status would flip from cancelled → success. Net effect: the user's explicit cancel was ignored, credentials persisted, UI reported success. Fix: re-check _OAUTH_FLOWS[flow_id].status under _OAUTH_FLOWS_LOCK immediately AFTER _exchange_codex_authorization() returns and BEFORE writing auth.json. If status is no longer pending, return cleanly — no persistence, no status overwrite. Behavioral test using threading.Event deterministically reproduces the race. UX-inconsistency severity, not a security bug (the credentials that get persisted ARE tokens the user authorized in their browser), but the cancel button stops doing what it says, violating the design intent of #1650's server-owned lifecycle.

• Persistent-host health diagnostics + watchdog hardening (#1657 by @Michaelyklam, refs #1458) — addresses the residual #1458 Bug #3 failure mode (process alive + port listening but HTTP requests not advancing), the wedge that survives after v0.50.275's FD-leak fix and v0.50.269's bootstrap fix. Adds three signals process supervisors can use to distinguish "process exists" from "request handling is still advancing":

  • Accept-loop heartbeat: QuietHTTPServer.accept_loop_requests_total + accept_loop_last_request_at instance attributes, incremented in _handle_request_noblock() (single serve_forever() thread, un-locked += is safe). Surfaced in /health as accept_loop: {requests_total, last_request_at}.
  • /health?deep=1 readiness probe: bounded STREAMS_LOCK.acquire(timeout=0.5) + all_sessions() walk + load_projects(_migrate=False) + sqlite3.connect(state.db) + PRAGMA schema_version. Returns 503 with status: degraded when streams lock blocks or any deep check errors. Watchdogs polling /health?deep=1 every 30s open-and-close 2880 short-lived sqlite connections per day per probe — bounded FD usage, no leak surface.
  • RLIMIT_NOFILE raise to 4096 at startup (best-effort, defense in depth for macOS launchd jobs that start at 256). Doesn't hide future FD leaks; gives diagnostic headroom before request handling falls over.
  • docs/supervisor.md updates: launchd/systemd HTTP watchdog recipe using curl -fsS --max-time 10 /health?deep=1 + launchctl kickstart -k. Notes accept_loop.requests_total should advance — if it stays flat while the process is alive, the accept loop is wedged.

  Per Opus advisor on stage-297: refactored _deep_health_checks(stream_check=...) to accept the pre-computed stream check from _handle_health() so we don't acquire STREAMS_LOCK twice on the same /health?deep=1 request (cosmetic inefficiency, not a correctness bug — but also could false-fail when the second acquire times out under contention). Plus a docstring note on _handle_request_noblock documenting why the un-locked += is safe (single-thread-only call site in CPython socketserver).

  PR #1656 by the same author (smaller, module-level globals approach) was closed as superseded by #1657 (instance-level + state.db check + projects check + supervisor.md docs).

Tests

4284 → 4288 passing (+4 regression tests across tests/test_issue1458_stability_hardening.py (3) + tests/test_issue1362_codex_oauth_onboarding.py::test_cancel_during_token_exchange_does_not_persist_credentials (1)). 0 regressions. Full suite ~118s.

Pre-release verification

• Opus advisor on stage-297 combined diff: SHIP verdict. All 9 verification questions cleared:
  • _active_state_db_path() verified at api/models.py:924, returns Path without opening connection
  • 500ms STREAMS_LOCK.acquire(timeout=...) ceiling reasonable for watchdog timeouts (10s curl --max-time typical)
  • with closing(sqlite3.connect(...)) deterministically releases FD, PRAGMA schema_version is read-only
  • _handle_request_noblock heartbeat increment is BEFORE super() — counter advances even if request handling raises, correct accept-loop semantics
  • _raise_fd_soft_limit() correctly clamps to hard limit, only RAISES soft limit (won't lower below launchd's LimitNOFILE setting)
  • OAuth fix narrows race window from "seconds-long network call" to "microseconds-long file write" — minimal correct change at the right layer
  • Docker fix sudo sh -c 'test -w' correctly handles all 3 cases (writable+sudo / readonly+sudo / no-sudo)
• Two minor Opus follow-ups absorbed in-release:
  • _deep_health_checks(stream_check=...) reuses pre-computed stream check from _handle_health() — saves redundant lock acquisition
  • Docstring note on _handle_request_noblock documenting single-thread safety of un-locked +=
• Self-built #1653 has thorough threading.Event-gated behavioral test demonstrating the race exists pre-fix and is fixed post-fix.
• Browser API sanity: 11/11 endpoints OK on stage server.
• Conflict resolution: zero file overlap across all 3 PRs (#1659 → docker_init.bash; #1653 → api/oauth.py; #1657 → api/routes.py + server.py + docs/supervisor.md). Auto-merged clean.

Authors

• @bergeouss — 1 PR (#1659, AI-assisted via Hermes Agent) — fixing their own v0.50.295 #1635 regression
• @nesquena (self-built) — 1 PR (#1653, follow-up to v0.50.296 #1652)
• @Michaelyklam — 1 PR (#1657, hardening for #1458 Bug #3)

Note on closed-as-superseded

PR #1656 (also @Michaelyklam) was closed as superseded by #1657. Both target #1458 Bug #3, both add accept-loop heartbeat + /health?deep=1 + 503-on-degraded. #1657 adds beyond #1656: state.db connectivity check, projects state check, FD soft-limit raise, and docs/supervisor.md watchdog recipe. Same author iterated; the second PR was the keeper.

[v0.50.296] — 2026-05-04

Fixed (3 PRs — closes #1406, #1617; refs #1362)

• Per-turn TPS now visible in assistant message headers (default-off, opt-in via Preferences) (#1640 by @Michaelyklam, closes #1617) — UX gate APPROVED by @aronprins with default-off + opt-in setting addition. Previously _turnTps calculation existed in api/streaming.py but was rendered into a global titlebar tpsStat element that's been hidden by default since v0.50.x. New show_tps boolean setting in Preferences (default false) renders an inline .msg-tps-inline chip in each assistant message header when enabled. Useful for power users tuning local-model setups (LM Studio, Ollama, llama.cpp, vLLM) where TPS varies turn-to-turn based on context length, parallel slots, and prompt complexity. Backend changes: api/metering.py adds explicit tps_available field (boolean — strict, requires both real exact token count AND backend-measured turn duration), drops placeholder 0.0 TPS when no real reading exists, switches live counting from character-count-derived text length to streaming-callback deltas. Final _turnTps computed from exact final output token usage divided by backend-measured turn duration when both available, persisted on assistant message and sent in done payload only when both signals available. Hot-apply: Preferences autosave updates window._showTps global, clears the message render cache, and re-renders messages — toggling the setting reflects in open tabs without refresh. UI evidence under docs/pr-media/1640/ showing default-off transcript, hot-apply with TPS visible, and the Settings → Preferences toggle.

• Operator-level config knob for first-turn session save timing (#1648 by @Michaelyklam, closes #1406) — operators wanting crash-resilience for the user's first prompt (vs accepting the first prompt being in-memory-only until streaming begins) now have a webui.session_save_mode config.yaml knob with values deferred (default — preserves the v0.50.230 fix for #1171 orphan-Untitled files) and eager. Eager mode materializes the user message into s.messages before launching the agent thread, plus updates _apply_core_sync_or_error_marker (WAL/repair path) and the streaming-thread context-build path (_drop_checkpointed_current_user_from_context) to avoid double-counting the user turn. Implementation matches @nesquena-hermes's prescribed shape from #1406's maintainer comment 1:1 — no Settings UI toggle (operator-level only), default stays deferred (orphan-Untitled hygiene preserved), threshold is "≥1 user message" not "did new_session() get called" (so empty-new-chat-then-switch-away doesn't recreate the orphan-file class). Validated _WEBUI_SESSION_SAVE_MODES = {"deferred", "eager"}; unknown values fail closed to deferred. 132-LOC test file covering both modes + WAL/repair interaction + duplicate-context filtering.

• In-app OAuth onboarding flow for OpenAI Codex (#1650 by @Michaelyklam, refs #1362) — three new endpoints: POST /api/onboarding/oauth/start (initiates the device-code flow), GET /api/onboarding/oauth/poll?flow_id=... (returns high-level status: pending|success|expired|cancelled|error), POST /api/onboarding/oauth/cancel (aborts an in-flight flow). Server-owned lifecycle: all sensitive provider state (device_auth_id, code_verifier, authorization_code, access_token, refresh_token, token_data) lives in a process-local _OAUTH_FLOWS dict keyed by an opaque WebUI-local flow_id (UUID4). Browser only sees flow_id, user_code, verification_uri, status — never raw OAuth lifecycle secrets. 15-minute flow timeout. Token persistence: successful Codex credentials write to the active profile's auth.json credential_pool.openai-codex (atomic tmp+rename, chmod 0o600 on tmp BEFORE rename so final file never has world-readable window, defense-in-depth post-rename chmod). Allowlist _ALLOWED_ONBOARDING_OAUTH_PROVIDERS = {"openai-codex"}; explicit blocklist for anthropic/claude/nous/qwen/gemini/minimax/copilot (rejected with generic "Only OpenAI Codex OAuth is supported in WebUI onboarding right now" — no internal triage state leaked). Implementation matches @nesquena-hermes's prescribed shape from #1362's maintainer comment 1:1 (server-owned state machine, no client-side device codes, abort endpoint, profile-scoped storage, opt-in). Updated static/onboarding.js for the openai-codex OAuth-pending path with clickable verification URL, prominent user code with copy-to-clipboard, abort button. Updated Codex auth endpoints to current Hermes Agent Codex protocol: https://auth.openai.com/api/accounts/deviceauth/usercode, .../api/accounts/deviceauth/token, .../oauth/token. 182-LOC test file covering route shape, secret-leak prevention, allowlist, expiration, cancellation, profile-scoped credential write, frontend endpoint usage, and the unsupported-provider note copy update. First step on the #1362 sprint roadmap — Anthropic Claude OAuth is the planned v2.

Tests

4255 → 4284 passing (+29 regression tests across tests/test_issue1617_tps_message_header.py (31), tests/test_session_save_mode.py (~13 new + edits), tests/test_issue1362_codex_oauth_onboarding.py (9), plus existing test updates for context-window-persistence, preferences-autosave). 0 regressions. Full suite ~120s.

Pre-release verification

• Opus advisor on stage-296 combined diff: SHIP verdict. All 14 verification questions cleared, with focused OAuth security audit on #1650 (in-memory flow lifecycle correct, lock not held during network IO, no flow_id leakage path, allowlist fail-closed, chmod-before-rename correctly implemented per the prior security-fix pattern, sensitive fields scrubbed on every terminal status transition, no internal triage state in error messages). Two minor follow-ups absorbed in-release per <20-LOC defensive policy:
  • _get_active_hermes_home() exception fallback now logs a logger.warning(...) so silent profile-corruption fallback is observable in logs.
  • Codex credential pool find-loop now accepts both source == "manual:device_code" (current code) AND source == "oauth_device" (legacy from prior Codex OAuth implementations) so users with prior creds get their entry updated in-place rather than accumulating a stale duplicate pool entry.
• #1640 has @aronprins UX-gate APPROVED (May 04 19:24 UTC) after a tighten request landed (default-off setting + Settings → Preferences toggle, hot-applied without refresh).
• #1648 implements @nesquena-hermes's prescribed shape from the #1406 maintainer comment 1:1.
• #1650 implements @nesquena-hermes's prescribed shape from the #1362 maintainer comment 1:1, with explicit security-audit alignment (server-owned device codes, opaque flow_id, profile-scoped storage, blocklist for known-OAuth providers awaiting v2).
• JS syntax: 5 modified .js files (boot.js, messages.js, onboarding.js, panels.js, ui.js) clean.
• Browser API sanity: 11/11 endpoints OK on stage server.
• Conflict resolution: clean auto-merge across all 3 PRs (rebased #1640 onto current master from 10-commits-behind base; #1648 + #1650 already on current master; no overlapping code regions across the 3 PRs in api/streaming.py, api/routes.py, or static/).

Authors

• @Michaelyklam — 3 PRs (#1640, #1648, #1650)

@Michaelyklam continues the strong contribution pattern from #1597, #1598, #1600, #1601, #1621, #1637 — this is now 9 merged PRs across the v0.50.292-296 release window.

Trust boundary note

This release ships the first user-facing OAuth flow in the WebUI. Token storage path, atomic write semantics, chmod timing, server-side flow state, and the allowlist/blocklist pattern are all in scope for security reviewers reviewing v0.50.296. The Hermes Agent CLI's auth.json format is the source-of-truth contract — both the WebUI and CLI write the same credential_pool.openai-codex shape, so credentials added via either surface are usable by either surface.

[v0.50.295] — 2026-05-04

Fixed (3 PRs — closes #1360, #1451, #1463, #1618, #1619)

• YAML, JSON, and diff/patch fenced code blocks now render multi-line, not collapsed to a single line (#1642 by @nesquena-hermes, closes #1618 / #1463, reported by @Zixim) — PR #484 (v0.50.237) introduced a JSON/YAML tree-viewer that routes lang === 'json' and lang === 'yaml' blocks through <div class="code-tree-wrap">…<pre class="tree-raw-view">…</pre></div> instead of bare <pre>. Same release added the diff/patch coloring path that emits <pre class="diff-block">. The _pre_stash regex at static/ui.js:1914 matched only literal <pre> (no attributes): <pre>[\s\S]*?<\/pre>. Both new shapes failed to match, fell through to the paragraph-wrap pass, and \n characters inside the code blocks got replaced with <br> tags inside <code>. By the time Prism ran, there were no newlines left for it to highlight against. PR #1516 (v0.50.279) had attempted a CSS-only fix on Prism's token white-space — that rule is in style.css and reaches the browser, but it was the wrong layer: the rule preserves newlines inside .token spans, but the spans were built from a string that had no newlines left. Fix: relax the _pre_stash regex to accept any attribute on <pre> (<pre> → <pre[^>]*>). One regex character. Pulls JSON, YAML, AND diff/patch blocks into the stash so paragraph-wrap can't mangle them. Bash, Python, Go, etc. were never affected because they emit bare <pre> and matched the existing regex. Reporter @Zixim noted the bug persisted from v0.50.279 → v0.50.291 → v0.50.292 despite the previous "fix"; this lands the actual fix at the actual layer.

  Parallel-discovery attribution: @Michaelyklam independently filed PR #1641 with the exact same one-character regex relax (filed 4 minutes before #1642). #1641 was closed as superseded by #1642 (which carries nesquena APPROVED + 322 LOC test suite covering YAML+JSON+diff vs #1641's YAML-only); the UI before/after PNGs from #1641 were adopted into stage-295 with a Co-authored-by: Michael Lam trailer on the docs commit so Michael's visual evidence ships in-tree alongside the canonical fix.

  Note on the previous diagnosis: the maintainer comment on #1618 asserting the fix had landed was based on git show v0.50.291:static/style.css confirming the CSS rule's presence — but a presence check on a rule is not a behavioral check that the rule does anything useful. Live-rendering YAML through renderMd() in the browser was the test that decided whether the maintainer reply or the user was correct. Apologies to @Zixim for the wrong call. Class of bug now documented in webui-rendermd-pipeline skill § Bug 10.

• macOS WKWebView trackpad scroll no longer overrides user position during streaming (#1639 by @bergeouss, closes #1360) — during streaming, scrolling up on a macOS trackpad caused the viewport to snap back to the bottom because the _programmaticScroll setTimeout(0) guard raced with WKWebView momentum scrolling. Mid-momentum scroll events either got swallowed (_programmaticScroll still True from the most recent programmatic scroll) or falsely reported nearBottom (momentum hadn't settled), keeping _scrollPinned=true. Fix: rAF-debounce the scroll listener so the nearBottom check fires on the next paint frame when the browser's scroll position has settled, plus a hysteresis counter requiring two consecutive near-bottom samples before re-pinning to prevent accidental re-pin during initial deceleration.

• Custom: providers now show all models in the dropdown* (#1639 by @bergeouss, closes #1619) — using a custom:* provider via custom_providers in config.yaml, the model dropdown was only showing the default model. Two parts: (1) the dedup logic in api/config.py ate all named-group models when they overlapped with auto-detected ones and the continue silently dropped auto-detected models; (2) the live enrichment endpoint at api/routes.py:/api/models/live only handled bare custom, not custom:* slugs. Fix: broadened /api/models/live to handle custom:* slugs (load-bearing fix), plus defensive belt-and-braces in api/config.py to fall back to auto-detected models if all named-group models were deduped (Opus advisor on stage-295 verified the latter is unreachable under current population logic but kept for future-proofing).

• Glued-bold-heading lift no longer mangles raw <pre> HTML (#1637 by @Michaelyklam, closes #1451) — renderMd() already stashed raw <pre> blocks before converting safe HTML tags, but restored them BEFORE the glued-bold-heading lift from #1446/#1449 ran. That left literal raw <pre> content visible to later markdown rewrites whenever it contained Para text.**Heading**\n\nNext-style text — the lift would insert \n\n inside the literal preformatted content, mangling it. Fix: delayed rawPreStash restore until AFTER markdown/link rewrites and BEFORE HTML sanitization. Existing placeholder pattern already protects fenced blocks; raw <pre> HTML now behaves like fenced code for this edge case. Test pins both sides: raw <pre> is preserved AND regular glued headings outside preformatted blocks still lift correctly.

Tests

4245 → 4255 passing (+10 regression tests across tests/test_issue1618_yaml_json_diff_newline_preserve.py (9), tests/test_issue1446_glued_heading_lift.py::test_real_renderer_protects_raw_pre_html (1); plus tests/test_issue677.py widened search window for #1639's rAF-debounce; plus tests/test_745_code_block_newlines.py widened source-scan windows from 400 to 1500 chars). 0 regressions. Full suite ~120s.

Pre-release verification

• Opus advisor on stage-295 combined diff: SHIP verdict. All 6 verification questions cleared. static/ui.js overlap between #1637 (rawPreStash, R-token), #1639 (scroll listener), and #1642 (_pre_stash, E-token) verified non-overlapping with separate token namespaces and correct ordering. #1637's relocated restore (line 1668 → 1799) traced through every intermediate rewrite pass — placeholder \x00R{N}\x00 has no syntactic characters that match. #1642 nested-<pre> non-greedy behavior verified identical to existing rawPreStash regex (no regression). #1639 hysteresis correct shape (count≥2 to re-pin). One non-blocking api/config.py defensive-dead-code observation absorbed via comment per Opus.
• #1642 has nesquena APPROVED with comprehensive end-to-end behavioral trace.
• JS syntax: static/ui.js clean.
• Browser API sanity: 11/11 endpoints OK on stage server.
• Conflict resolution: clean auto-merge across 3 PRs (rebased #1637 + #1639 onto current master from 9-commits-behind base).

Authors

• @nesquena-hermes — 1 PR (#1642, with co-author trailer for @Michaelyklam's UI media adoption)
• @Michaelyklam — 1 PR (#1637)
• @bergeouss — 1 PR (#1639, AI-assisted via Hermes Agent)

Closes #1360, #1451, #1463, #1618, #1619 (5 issues).

[v0.50.294] — 2026-05-04

Fixed (3 PRs — streaming stability trio + models cache version stamp + session race + readonly fs guard — closes #1430, #1470, #1623, #1624, #1625, #1633)

• SSE app heartbeat lowered from 30s to 5s at every long-lived handler (closes #1623) — kernel TCP keepalive (added v0.50.289 / #1581) declares a peer dead at KEEPIDLE (10s) + KEEPINTVL (5s) × KEEPCNT (3) = 25s worst-case. The five SSE handlers in api/routes.py (main agent stream, terminal, gateway-watcher, approval-poller, clarify-poller) all used 30s, which meant on flaky networks the kernel could tear the socket down before the app sent its first heartbeat byte — flaky-network drops at ~10s that users perceived as "the stream died around 10 seconds in" during long LLM thinking phases. Fix: new _SSE_HEARTBEAT_INTERVAL_SECONDS = 5 constant referenced by every queue-poll site. Cost: ~150B/min when idle (12 extra heartbeats × 12 bytes), negligible. Many production SSE deployments use 5-15s app heartbeats specifically because TCP keepalive isn't reliable across all network paths (proxies, load balancers, mobile NAT). Regression test pins the inequality app_heartbeat × 2 ≤ kernel_keepalive_window so future tuning of either timer can't re-introduce the misalignment.

• _repair_stale_pending() no longer fires on fresh turns (closes #1624) — _repair_stale_pending in api/models.py:716 triggered as soon as pending_user_message was set AND active_stream_id was missing from the live STREAMS registry. There was no time-based staleness guard, so any narrow race between the streaming thread clearing pending_user_message and STREAMS.pop(stream_id) produced a false-positive "Previous turn did not complete." marker on a turn that actually finished correctly — every command-approval turn reliably reproduced this for at least one user. Fix: add _REPAIR_STALE_PENDING_GRACE_SECONDS = 30 and bail when time.time() - pending_started_at < grace. Falsy pending_started_at (legacy sidecars from before the field was added in v0.50.283) is treated as "old enough" so legitimate legacy-data recovery still works. Plus a rate-limited logger.warning/logger.debug on every legitimate repair so the next batch of user reports tells us whether the underlying race still fires post-fix. This is defense-in-depth, not the root-cause fix — the streaming thread should never exit without clearing pending; tracked separately for future investigation.

• Local model servers (LM Studio, Ollama, llama.cpp, vLLM, TabbyAPI, LocalAI) now keep their full HuggingFace-style model id (closes #1625, reported by @akarichan8231) — resolve_model_provider() in api/config.py:1149 stripped the provider prefix from a model id like qwen/qwen3.6-27b whenever (a) the model contained /, (b) config.yaml had model.base_url set, and (c) the prefix matched a known entry in _PROVIDER_MODELS (e.g. qwen, openai, anthropic, etc.). The strip is correct for OpenAI-compatible proxies (LiteLLM, OpenRouter relays) — openai/gpt-5.4 → gpt-5.4. But local model servers are not proxies — they register models under their full HuggingFace path as the registry key. Stripping the prefix made LM Studio (or Ollama, llama.cpp, vLLM, TabbyAPI) miss the loaded model and silently load a brand-new instance with default settings, ignoring the user's tuned 131072 context / 4 parallel slots. Fix: new _LOCAL_SERVER_PROVIDERS set covering canonical names (lmstudio, lm-studio, localai, ollama, llamacpp, llama-cpp, vllm, tabby, tabbyapi, koboldcpp, textgen) and a new _base_url_points_at_local_server() heuristic that catches provider: custom + base_url: http://localhost:1234/v1 setups too (via loopback / RFC1918 / IPv6-loopback IP detection). Either signal triggers no-strip. Backward compat is preserved for OpenAI-compatible proxies on public hosts (LiteLLM at https://litellm.example.com/v1 continues to strip openai/gpt-5.4 → gpt-5.4).

  Behavior change for internal-network OpenAI-compatible proxies (RFC1918): the loopback heuristic also matches private-IP base_urls (10/8, 172.16/12, 192.168/16). A team running an internal LiteLLM proxy at http://10.5.0.1:1234/v1 now gets prefix preservation instead of stripping. LiteLLM accepts either form, so this is invisible in practice; users with a custom proxy on RFC1918 that requires the stripped form should configure it as a custom_providers: entry, which routes through the early custom_providers loop and never reaches the local-server detection.

• /api/models disk cache now invalidated on every WebUI version change (closes #1633, reported by @Deor on Discord) — STATE_DIR/models_cache.json was persisted across server restarts without any version stamp. A Docker container update from version A to version B read the cache file written by version A — users saw stale picker contents (missing models, phantom provider groups, e.g. the v0.50.281 4-model Nous Portal + Opencode_Go phantom) for up to 24 hours until either the TTL expired, an unrelated provider edit triggered invalidate_models_cache(), or they manually deleted the file. Reporter Deor updated to v0.50.292 — which contained fixes for #1538, #1539, and #1568 — did a hard refresh and cleared site data, and still saw byte-for-byte identical picker contents because the server kept reading the v0.50.281 cache file off the host-mounted volume. Fix: _save_models_cache_to_disk() now stamps payloads with _webui_version (resolved lazily from api.updates.WEBUI_VERSION to avoid a circular import) and _schema_version = 2. _load_models_cache_from_disk() rejects any cache where either field mismatches the runtime — every release auto-rebuilds from live provider data on the very next /api/models call. Legacy unstamped caches (pre-#1633 files) are also rejected, so the first read after upgrading to this release rebuilds cleanly. Schema version is independent of the WebUI version stamp so future cache-shape changes can invalidate older releases without relying on a tag bump alone. The early-init edge case (api.updates not yet loaded) skips the version check rather than wedging the boot — at worst an unstamped file is written once and rejected on the next call.

• Session list race condition no longer makes today's sessions disappear (closes #1430, reported by @Olyno) — renderSessionList() in static/sessions.js had no staleness guard. Multiple callers (message send, rename, session switch) fire it concurrently without awaiting, so a slower previous-day fetch could overwrite _allSessions with stale data after a faster newer fetch had already written today's data — manifesting as today's sessions disappearing when the user clicked an older conversation. Fix: new module-local _renderSessionListGen generation counter pre-incremented before the await and re-checked after it; stale calls (older _gen) self-discard before mutating state. Lightest-weight correct shape — no AbortController, no debounce, no state machine. Behavioral harness verifies three concurrent calls with varying delays correctly land only the most recently issued response. (PR #1635 by @bergeouss, AI-assisted via Hermes Agent.)

• Read-only root filesystem under podman no longer crashes container startup (closes #1470, reported by @cosmoceus) — docker_init.bash unconditionally called groupmod/usermod even when /etc/group and /etc/passwd were on a read-only filesystem (typical podman + read_only=true setup). groupmod: cannot lock /etc/group; try again later. killed the container at boot. Fix: writability check via [ ! -w /etc/group ] || [ ! -w /etc/passwd ]; on read-only mounts with matching UID/GID skip gracefully with a log message; on read-only mounts with mismatched UID/GID emit a clear error_exit directing the user to set matching IDs or disable read_only=true. (PR #1635 by @bergeouss.)

Tests

4180 → 4245 passing (+65 regression tests across tests/test_issue1623_sse_heartbeat_alignment.py (3), tests/test_issue1624_repair_stale_pending_grace.py (9), tests/test_issue1625_local_server_model_id_preservation.py (34, expanded for lm-studio/localai), tests/test_issue1633_models_cache_version_stamp.py (19); plus tests/test_model_resolver.py updates and tests/test_model_cache_metadata.py round-trip semantics). 0 regressions. Full suite ~120s.

Pre-release verification

• Self-built fixes (#1631, #1636 — nesquena-hermes), independent review APPROVED by nesquena for both, with comprehensive end-to-end traces including reproducer harnesses for Deor's Docker-upgrade scenario (#1633) and the kernel-keepalive math (#1623).
• External contributor PR #1635 by @bergeouss (AI-assisted via Hermes Agent), independent review APPROVED by nesquena with behavioral harness for the race fix (three concurrent fetches with varying delays — only the latest writes to state).
• Opus advisor pre-merge pass on #1631: SHIP — no MUST-FIX, one SHOULD-FIX (rate-limited _repair_stale_pending telemetry) and three NITs (expanded _LOCAL_SERVER_PROVIDERS, RFC1918 CHANGELOG callout) absorbed in-PR (commit 2161fc1).
• Opus advisor pre-merge pass on stage-294: see "Opus-applied fixes" below.
• _SSE_HEARTBEAT_INTERVAL_SECONDS × 2 ≤ KEEPIDLE + KEEPINTVL × KEEPCNT pinned by a regression test that derives the kernel window from server.py setsockopt block at runtime.
• _repair_stale_pending grace guard exercised at: 5s-old turn (skip), grace-1s-old turn (skip), grace+30s-old turn (fire), missing/zero/garbage pending_started_at (fire — legacy compat), no pending-message (skip — pre-existing contract), live stream (skip — pre-existing contract).
• resolve_model_provider exercised across local-server provider names + 7 loopback/private IP heuristic cases + backward-compat checks for OpenAI-compatible proxies on public hosts and OpenRouter pass-through. Helper _base_url_points_at_local_server() independently unit-tested against 11 url shapes.
• End-to-end behavioral test (test_docker_update_scenario_invalidates_old_cache) reproduces Deor's exact reported scenario: a cache stamped at v0.50.281 fails to load when runtime is v0.50.292, forcing a fresh rebuild that picks up the picker fixes shipped between releases.
• Round-trip + version-mismatch + legacy-unstamped + schema-mismatch + early-init + corrupt-JSON + missing-file + atomic-overwrite + invalidate-cache-tear-down all pinned.
• Cross-tool verified: agent has its own model-cache files at different paths (hermes_cli/codex_models.py, hermes_cli/models.py) — no collision.

Opus-applied fixes (absorbed in-release)

From #1631 in-PR Opus pre-merge pass (already on the PR's branch):

• SHOULD-FIX (_repair_stale_pending log volume): rate-limit the repair-firing telemetry by age — logger.warning for the diagnostically valuable race window (< 5 min, actual leak-path candidates that slipped past the grace guard) and logger.debug for the long-tail (orphaned sidecars from prior process lifetimes). Prevents reconnect loops on stuck sessions from flooding the log while preserving the diagnostic signal we want for tuning the grace constant.
• NIT (_LOCAL_SERVER_PROVIDERS): added lm-studio (hyphenated alias used in some custom_providers: configs) and localai (LocalAI project, common OpenAI-compatible local server). Test parametrize expanded to cover the new names plus pre-existing koboldcpp and textgen for symmetry.

From #1636 stage-294 absorption (this release):

• Minor observation absorbed — _is_loadable_disk_cache() now logs at DEBUG when rejecting (schema=N vs M, version=A vs B). Useful diagnostic when investigating future "why did my cache rebuild" questions.
• Code comment added to _is_loadable_disk_cache() documenting that _webui_version is a string compare (not semver) — paired with _schema_version independent axis for breaking changes that lack a tag bump.

[v0.50.293] — 2026-05-04

Fixed (3 PRs — profile isolation trio + agent version badge + #1597 follow-up)

• Show Hermes Agent version in Settings → System (#1606) — added agent_version detection for display in System settings (~/.hermes/hermes-agent/VERSION preferred, git describe fallback), surfaced it alongside existing webui_version in GET /api/settings, and updated the System pane badge UI with a labeled Agent pill plus graceful fallback when the agent cannot be detected.

• /api/sessions and /api/projects are now scoped to the active profile by default (closes #1611 + #1614, reported by @stefanpieter) — the WebUI's session list and project list were both global: /api/sessions merged WebUI sidecar sessions and CLI/imported sessions and returned all rows regardless of which hermes_profile cookie the client sent, and /api/projects had no profile awareness whatsoever. Reporter @stefanpieter ran curl /api/sessions -H 'Cookie: hermes_profile=haku' against a multi-profile install and got back sessions tagged haku, kinni, AND noblepro — every profile's history visible from every UI. Frontend filtering had a CLI-bypass at static/sessions.js:1853 (s.is_cli_session || s.profile === S.activeProfile) that let every CLI-imported session through regardless of which profile owned it. Fix: server-side filter on both endpoints via the active profile; explicit ?all_profiles=1 opt-in for aggregate views; new _profiles_match() helper that honours the renamed-root case ('default' and a renamed-root display name like 'kinni' cross-match because they resolve to the same ~/.hermes home). Project rows now carry a profile field stamped at create-time. /api/projects/{create,rename,delete} and /api/session/move reject ops on cross-profile projects with 404. ensure_cron_project() keys lookup by (name, profile) so cron-spawned sessions from profile A no longer surface under the cron chip of profile B. One-time migration in load_projects() back-tags legacy untagged projects from any session that uses them, falling back to 'default'. Frontend drops the CLI-session bypass; toggle-on-toggle re-fetches with ?all_profiles=1 rather than slicing client-cached rows.

• Renamed root profile no longer 404s on switch (closes #1612, reported by @stefanpieter) — Hermes Agent allows the root/default profile (~/.hermes itself) to have a display name other than the legacy literal 'default'. WebUI hard-coded if name == 'default': at five callsites in api/profiles.py (get_active_hermes_home, get_hermes_home_for_profile, switch_profile, delete_profile_api, sticky-default writeback), so a renamed root (e.g. 'kinni' with is_default=True, path=~/.hermes) fell through every check to _DEFAULT_HERMES_HOME / 'profiles' / 'kinni' — a directory that doesn't exist. Switching to the renamed root raised Profile 'kinni' does not exist. and broke every code path that resolved ~/.hermes from a profile name. Fix: new _is_root_profile(name) central helper that consults list_profiles_api() for is_default=True matches alongside the legacy 'default' alias. All five callsites now route through it. Memoized with explicit invalidation hooks at every profile mutation (create, delete) so the lookup cost is paid once per cache window. Sticky active_profile file write now stores '' for renamed root (consistent with the existing legacy contract that empty == root) instead of writing the display name and re-resolving wrong on next boot.

• Provider config cleanup regression test (#1630 by @Michaelyklam, follow-up to #1597) — pins the late-binding contract introduced in #1597 by removing the now-unused _get_config_path import from api.providers and adding a dedicated regression test that proves _clean_provider_key_from_config() resolves through api.config._get_config_path() at call time rather than the stale module-load reference. Belt-and-braces against a future import-cleanup silently reintroducing the original bug class.

Tests

4142 → 4180 passing (+38 regression tests across tests/test_issue1611_session_profile_filtering.py (11), tests/test_issue1612_renamed_root_profile.py (11), tests/test_issue1614_project_profile_filtering.py (11), tests/test_provider_management.py::test_clean_provider_key_uses_late_bound_config_path (1), and tests/test_version_badge.py agent-detect chain (~5)). 0 regressions. Full suite in ~120s.

Pre-release verification

• Opus advisor on full stage-293 diff: SHIP verdict. Two SHOULD-FIX items absorbed in-release per <20-LOC defensive policy: (a) api/models.py:load_projects() re-reads from disk inside _PROJECTS_MIGRATION_LOCK when _projects_migrated is found True post-wait — closes a startup-window staleness race where a thread that read pre-migration could return stale untagged rows after a peer migrated and wrote disk; (b) _detect_agent_version() now uses git describe --tags --always --dirty for symmetry with _detect_webui_version(). One non-blocking client-side filter cross-alias edge case deferred as follow-up issue.
• Self-built fix (#1629, nesquena-hermes), independent review APPROVED by nesquena with comprehensive end-to-end trace, cross-tool verification against fresh agent tarball, security audit, race/state analysis, and 13-row edge-case matrix.
• 31 dedicated regression tests for #1611/#1612/#1614 invariants. Source-string assertions pin the active-profile guards on /api/projects/{rename,delete} and /api/session/move.
• _is_root_profile invalidation cycle exercised via test_is_root_profile_invalidation_drops_stale (cache populated, then dropped after simulated profile rename).
• ensure_cron_project per-profile isolation exercised via test_ensure_cron_project_creates_per_profile (two profiles → two distinct project_ids).
• Cross-alias matching pinned: _profiles_match('default', 'kinni') returns True only when kinni is is_default.

Opus-applied fixes (absorbed in-release)

From stage-293 review:

• SHOULD-FIX A (project migration startup race): api/models.py:load_projects() re-reads from disk after acquiring _PROJECTS_MIGRATION_LOCK and finding _projects_migrated=True. Without this, Thread B that read pre-migration could return stale untagged rows after Thread A migrated and wrote disk — a mutation route on those stale rows could silently overwrite the migration. Window is process-startup-only and very narrow; fix is 8 LOC.
• SHOULD-FIX B (agent version --dirty symmetry): _detect_agent_version() now passes --dirty to git describe --tags --always, matching _detect_webui_version(). Operators with locally-modified agent checkouts now see the dirty marker.

Already absorbed in #1629 (in-PR Opus pre-merge pass before staging):

• SHOULD-FIX #1 (renamed-root client cross-alias): removed the strict-equality client filter at static/sessions.js:1853. Server-side _profiles_match cross-aliases 'default'-tagged rows to a renamed root 'kinni'; a strict-equality client filter would have rejected them, dropping every legacy session for renamed-root users. Server is now solely authoritative for profile scoping. Same fix applied to the otherProfileCount client fallback.
• SHOULD-FIX #2 (messaging-source dedupe ordering): moved _keep_latest_messaging_session_per_source(merged) to AFTER the profile filter at api/routes.py:2078. Before: the dedupe ran on the merged-cross-profile list with profile-blind keys, discarding the older profile's row across profiles, then the profile filter scoped to the active profile — leaving zero rows for any messaging identity the active profile shared with another profile. After: filter first, then dedupe within scope.
• NIT #3 (migration save-failure): _projects_migrated = True flag now set only AFTER successful save_projects(). A failed save no longer poisons the in-memory state for the rest of process lifetime.
• NIT #4 (dead test code): cleaned up the dead double-assignment in test_is_root_profile_invalidation_drops_stale.
• NIT #5 (_create_profile_fallback literal-default): routed the clone_from == 'default' literal in the no-hermes-cli fallback path through _is_root_profile() for parity with the other 5 callsites.

[v0.50.292] — 2026-05-04

Fixed (12 PRs — multi-tab SSE + subpath routes + cross-source lineage + paste UX + 3 follow-ups)

• Multi-tab SSE no longer splits stream tokens between tabs (#1598 by @Michaelyklam, closes #1584) — api/config.py introduces a StreamChannel broadcast class to replace the single-consumer queue.Queue previously stored in STREAMS[stream_id]. With the old design, the same session in two tabs was racing to consume tokens from one queue, so one tab might receive H while the other received allo. The new channel buffers events while no subscriber is connected (so the first tab sees the stream tail that arrived during the gap), and once one or more tabs are subscribed it broadcasts every event to all of them. _handle_sse_stream() calls subscribe() on connect and unsubscribe() in a finally block on disconnect/error. Per-stream wiring updated at all three producer callsites (_handle_chat_start, _handle_btw, _handle_background). Per Opus advisor on stage-292: replay-while-subscribing now happens inside the lock to prevent an event-ordering inversion when a 2nd tab subscribes mid-stream.

• Frontend routes now work under subpath mounts like /hermes/ (#1601 by @Michaelyklam) — auth redirect Location header (api/auth.py), 401-redirect helpers (static/ui.js, static/workspace.js), direct fetch/EventSource URLs (static/{boot,messages,sessions}.js), and the SMD vendor module import (static/index.html) all switched from root-absolute (/login, /api/..., /static/...) to mount-relative (login, api/..., static/...). Where appropriate, the mount-relative URL is anchored against document.baseURI || location.href so the <base href> element correctly resolves it under deep SPA routes. Per Opus advisor on stage-292: the gateway SSE probe in static/sessions.js:1440 now also uses document.baseURI || location.href for parity with the other 5 callsites in this PR, ensuring it doesn't 404 under subpath at deep routes. Self-hosters running WebUI behind a reverse proxy or container ingress at a path prefix can now have everything work without Caddy/nginx rewrite workarounds.

• Streaming markdown now formats live segments under subpath mounts (#1600 by @Michaelyklam) — static/index.html SMD module import switched to mount-relative form. static/messages.js fallback path (when window.smd isn't loaded) now passes the visible segment through renderMd(fallbackText) for the FIRST live segment as well as post-tool segments — previously the first segment was inserted as raw parsed.displayText, leaving markdown visible until the assistant's turn completed.

• Cross-source session continuations stay separate in the sidebar (#1602 by @ai-ag2026) — api/agent_sessions.py:_is_continuation_session() now refuses to collapse parent/child where parent.source != child.source. A WebUI session continuing from a Telegram/CLI compression-chained parent stays visible as its own WebUI row instead of inheriting the old parent's title and source metadata. Non-continuation child rows now also expose parent_title + parent_source so the surface can show the lineage without losing the child's own identity.

• Paste no longer drops text when clipboard has both text and image (#1622 by @s905060, closes #1620) — static/boot.js paste handler used to intercept on any image/* clipboard item, calling preventDefault() and attaching the image as a screenshot. Pasting from rich-text sources (Notes, Word, Slack, browser selections) attaches a rendered preview alongside the plain text — so the handler swallowed the text payload and only the rogue image was attached. Now defers to the browser's default text-paste when the clipboard also carries text/plain or text/html string items, and only intercepts when the clipboard is image-only (true screenshot paste). Image filter also tightened to kind === 'file' so string items advertising an image MIME (e.g. text/html with embedded data URIs) aren't misclassified.

• Forked session sidebar indicator is now recognizable and less noisy (#1621 by @franksong2702, fixes #1613) — replaced the permanent ⑂ OCR glyph with the existing git-branch SVG icon, made the indicator subtle (.35 opacity) until row hover/focus/active states (.85 opacity), changed the tooltip to prefer the parent session title with a truncated-id fallback, and removed the hidden click-to-parent behavior from the sidebar row (was unpredictable). The /branch command and fork data model are unchanged.

• Update banner now shows tracked branches in labels (#1605 by @ai-ag2026) — static/ui.js and static/panels.js use a new _formatUpdateTargetStatus(label, info) formatter that includes info.branch parenthetical, so WebUI (origin/master): 0 updates, Agent (origin/main): 32 updates is displayed in mixed states instead of the generic Agent: 32 updates that could be misread as the WebUI being behind. Settings panel uses a typeof-guarded fallback to a local formatter for back-compat with older boot states.

• Update compare URLs preserve git remote names ending in g/i/t (#1603 by @ai-ag2026) — api/updates.py was using str.rstrip('.git') for the remote URL trim, which is a CHARACTER-CLASS strip — 'hermes-webui.git' became 'hermes-webu' (it strips trailing g, then i, then ., then more i's, then u...). The updated logic checks endswith('.git') and slices the literal suffix, leaving hermes-webui/hermes-agent and any other remote name intact. Both HTTPS and SSH origin forms covered.

• _pending_started_at truthy-check fallback (#1599 by @Sanjays2402, closes #1595) — api/streaming.py:2058 tightens the per-turn duration fallback from is not None to a truthy check so None, missing-attr, and an explicit 0 all uniformly fall back to time.time(). Closes the loop on the v0.50.290 retro lesson — the v0.50.290 contributor's source-string assertion that pinned the old is not None form is removed by this PR. Behavioral assertions on the duration fallback remain.

• pytest config-path isolation (#1597 by @Michaelyklam) — Hermes Agent sessions can set HERMES_CONFIG_PATH to the real ~/.hermes/config.yaml before invoking pytest, so onboarding/provider tests could read/write the developer's live config. tests/conftest.py now overrides HERMES_CONFIG_PATH to point at the isolated test home before any product modules are imported. api/providers.py:_clean_provider_key_from_config() switches from import-time-bound _get_config_path to call-time resolution through api.config._get_config_path() so monkeypatches and tests work correctly.

• Cron worker no longer silently ignores profile-context failures (#1608 by @franksong2702, closes #1578) — _run_cron_tracked() no longer wraps cron_profile_context_for_home(profile_home).__enter__() in a try/except Exception that silently sets ctx = None. A silent fallback in the worker thread leaves the job running unpinned against process-global HERMES_HOME, silently corrupting cross-profile state — same class of bug as #1573. Lets the exception propagate (kill the worker thread) rather than corrupt cross-profile state. Source-level regression test catches any future re-introduction of the over-broad except clause.

• TCP keepalive cleanup + macOS support (#1609 by @franksong2702, closes #1583) — server.py cleanup follow-up to v0.50.289. Deletes the dead QuietHTTPServer.server_bind() override (TCP_KEEP* setsockopts on the listening socket are no-ops without SO_KEEPALIVE, which can't be set on a passive socket anyway). Splits Handler.setup() into proper ordering — TCP_NODELAY first, then SO_KEEPALIVE, then per-platform timing parameters: Linux uses TCP_KEEPIDLE/INTVL/CNT, macOS uses TCP_KEEPALIVE. Previously, on macOS, the entire try block aborted on the first AttributeError from TCP_KEEPIDLE and SO_KEEPALIVE was never applied — connections never had keepalive at all on Mac.

Tests

4117 → 4142 passing (+25 new regression tests across all 12 PRs). 0 regressions. Full suite in ~125s.

Pre-release verification

• Opus advisor: SHIP verdict. Two SHOULD-FIX items absorbed in-release per <20-LOC defensive policy: (1) #1598 ordering race fixed by moving offline-buffer replay inside the subscribe lock; (2) #1601 sessions.js:1440 gateway SSE probe switched to document.baseURI || location.href for parity with PR's other 5 callsites.
• JS syntax: all 6 modified .js files checked clean with node -c.
• Browser API sanity: 11/11 endpoints OK on stage server.
• CHANGELOG / ROADMAP / TESTING: stamps updated for v0.50.292 / 4142 baseline.

Authors

• @Michaelyklam — 4 PRs (#1597, #1598, #1600, #1601)
• @ai-ag2026 — 3 PRs (#1602, #1603, #1605)
• @franksong2702 — 3 PRs (#1608, #1609, #1621)
• @Sanjays2402 — 1 PR (#1599)
• @s905060 — 1 PR (#1622)

Closes #1578, #1583, #1584, #1595, #1613, #1620.

[v0.50.291] — 2026-05-04

Fixed (1 PR — "What's new?" link 404 — closes #1579)

• "What's new?" update-banner link no longer 404s when local HEAD diverges from upstream (closes #1579, reported by @ai-ag2026) — api/updates.py was building the GitHub compare URL from local-HEAD short SHA: repoUrl + '/compare/' + curSha + '...' + newSha where curSha = git rev-parse --short HEAD. Whenever the local checkout had commits that weren't in the upstream repo — unpushed work, dirty stage branches, forks, in-flight rebases, release-time merge commits — the compare URL pointed at a SHA that github.com had never seen and returned its standard 404 page. Reporter saw https://github.com/nesquena/hermes-webui/compare/c660c7f...86cb22e produce a 404 because c660c7f was an unpushed local commit. Fix: replace git rev-parse --short HEAD with git merge-base HEAD <compare_ref> then git rev-parse --short on that result. The merge-base is the most recent commit both local and upstream share, and (since git fetch succeeded just before) is guaranteed to exist on the upstream GitHub repo. For the common case (pure-behind clone, no local commits) the merge-base equals local HEAD and the URL is unchanged from prior behavior. For the divergent case (the #1579 reporter scenario) the URL points at the public ancestor, which github.com always knows. If merge-base itself fails (shallow clone with no shared history), fall back to current_sha=None so the existing JS link guard (if(repoUrl && curSha && newSha)) suppresses the link entirely rather than emitting a known-broken URL. Also hardens static/ui.js to clear the link's href and display:none it on every banner render, so a stale link from a prior render can't survive a re-render where the new payload's current_sha is null. 6 regression tests covering merge-base correctness, backward-compat for pure-behind clones, merge-base-failure fallback, JS link reset on every render, JS conditional guard shape, and an end-to-end verification of the reporter's exact scenario.

Tests

4111 → 4117 passing (+6 regression tests on tests/test_issue1579_whats_new_link_404.py). 0 regressions. Full suite in ~115s.

Pre-release verification

• Self-built fix (nesquena-hermes) with independent review APPROVED by nesquena — full end-to-end behavioral harness using throwaway local+upstream git fixtures verified the reporter's exact scenario produces a 404 pre-fix and resolves post-fix. Cross-tool audit (webui-only, no agent surface). Security audit clean. Race/state analysis: _check_repo is single-threaded per request, _run_git spawns subprocesses with no shared state. Edge-case trace covered 8 scenarios including pure-behind clone (URL unchanged from pre-fix), 2-unpushed-3-upstream (the reporter's case), pure-ahead, fork checkout, mid-rebase, shallow clone, transient git merge-base errors, and stale link from prior render with null current_sha.
• Bug repro confirmed locally: simulated 2 unpushed commits + 3 upstream commits; git rev-parse --short HEAD returns SHA absent from upstream history (verifiable with git cat-file -e $sha origin/master failing); git merge-base HEAD origin/master returns SHA present in upstream history. Compare URL constructed from merge-base resolves on github.com; URL constructed from local HEAD 404s.
• All other tests in test_update_checker.py (12) and test_version_badge.py (21) still pass — no behavioral changes to the diagnostic / version-detection paths.

[v0.50.290] — 2026-05-04

Fixed + Feature (5-PR batch — login cache + sidebar UX + workspace dropdown polish)

• Login asset SW cache exemption (#1586 by @Michaelyklam) — service worker now bypasses /login and /static/login.js (network-only), navigation requests are network-first, and cache-first is scoped to an explicit SHELL_ASSETS allowlist (./ dropped from the precache list). static/login.js is also versioned via ?v=<WEBUI_VERSION> so a stale cached login script can never block a fresh password submit. Closes the auth-stuck-in-cache class: a stale cached login.js with old auth-submit path was making valid passwords fail until users manually cleared browser cache, which is especially confusing for PWA installs. Two new test files (test_service_worker_api_cache.py, test_sprint19.py) lock the SW behavior — including a fetch_idx < cache_idx ordering check so the navigation branch can never silently regress to cache-first.

• Hot-apply compact tool activity setting (#1590 by @Michaelyklam) — static/panels.js:_autosavePreferencesSettings now captures the POST response, and when the autosaved payload includes simplified_tool_calling, updates window._simplifiedToolCalling, clears the message render cache, and re-renders messages immediately. Settings checkboxes that silently waited for a refresh felt broken — especially this one, which changes transcript structure rather than just a stored preference. Hot-applying the renderer mode keeps settings behavior consistent with user expectations: toggle means visible now. 6 LOC code + structural regression test.

• First-turn sidebar visibility (#1591 by @Michaelyklam) — empty Untitled sessions are intentionally ephemeral so accidental blank chats don't clutter the sidebar, but a first user message should promote the session into a real visible conversation immediately, before the model produces an assistant response. The bug was a race between the local first-message render and /api/sessions: the client could re-fetch stale zero-message metadata before /api/chat/start saved pending state, hiding the row until the assistant turn completed. Three pieces: (1) new upsertActiveSessionForLocalTurn() helper in static/sessions.js that writes to the cached sidebar list directly; (2) three optimistic-upsert passes in static/messages.js:send() (before /api/chat/start, after rename, after stream_id known) plus dropping the pre-start /api/sessions re-fetch race; (3) api/models.py:Session.compact() now bumps message_count to ≥1 and sets last_message_at to pending_started_at when pending_user_message is set, plus exposes a new has_pending_user_message: bool field that the empty-Untitled filter respects. Users can now switch into a just-started conversation and inspect live tool calls even before the agent has responded. 191/9 LOC code + 99-LOC regression test.

• Turn duration display ("Done in 1m 12s") (#1592 by @Michaelyklam) — api/streaming.py captures s.pending_started_at in _run, calculates _turn_duration_seconds = max(0.0, time.time() - float(_turn_started_at)) at completion, persists it on the assistant message dict as _turnDuration (so reloads keep the display), and includes duration_seconds in the streaming done usage SSE payload. Frontend reads from both surfaces: live during streaming via attachLiveStream() reading usage.duration_seconds, persistent across reloads via the _turnDuration field. Renders as "Done in 1m 12s" — on the compact Activity row in compact mode, and as a subtle assistant footer chip in expanded tool-call mode. 152/20 LOC code + 67-LOC regression test. Opus advisor flagged a _pending_started_at == 0 falsy-vs-None edge case as a hypothetical SHOULD-FIX; not absorbed in-release because the contributor's regression test pins the explicit is not None form. Filed as follow-up for separate consideration.

• Workspace dropdown sort + search + chip sync on chat switch (#1464 by @JKJameson; maintainer-augmented) — static/sessions.js:loadSession() now calls syncTopbar() immediately after S.session = data.session, before async message-loading begins (mirrors how the model chip is handled). static/panels.js:renderWorkspaceDropdownInto is rewritten with: a search input that filters by name or path in real-time; alphabetical sort (frontend only via localeCompare, backend load_workspaces() preserves user-defined order so drag-to-reorder #492 keeps working); class-based CSS (.ws-list-container, .ws-search-row, .ws-search-input, .ws-no-results); 9-locale i18n parity for the new keys (ws_search_placeholder, ws_no_results). 84/6 LOC code + 61-LOC regression test. Maintainer in-stage actions: rebased onto current master (was 124 commits behind v0.50.275); flipped inverted ternary on panels.js:1683 (visible?'':'none' → visible?'none':'') — contributor's own screenshot in PR thread demonstrated the bug live (rendered "No workspaces found" alongside valid filtered results); added tests/test_issue1464_workspace_dropdown_filter.py to lock the visibility relationship as mirror-image opt/noResults ternaries so future edits cannot silently re-invert. Desktop UX gate verified live on test server (alphabetical sort + search filter + zero-match noResults rendering — single message, no duplication). Mobile (390px) responsive verification pending — couldn't be captured via CDP origin-policy block, deferring true 390px screenshot review to maintainer Aron's hands-on session.

Maintainer-side test fixes in stage (auto-rebase + auto-fix policy)

Two stale source-string assertions were broken by #1591's compact() and messages.js changes — both real test-side fixes, no production code modified:

• tests/test_465_session_branching.py::test_session_compact_includes_parent — widened search window from 1500 to 3000 chars after def compact(self, because #1591 inserted a has_pending_user_message recompute block at the top, pushing parent_session_id beyond the original window.
• tests/test_regressions.py::test_send_uses_session_model_as_authoritative_source — switched anchor from src.find("/api/chat/start") (which #1591 made first match a comment line) to src.find("api('/api/chat/start'") so the search lands on the actual POST call.

Tests

4094 → 4111 passing (+17 net: +6 from #1586, +1 from #1590, +1 from #1591, +6 from #1592, +1 from #1464, +2 maintainer-side test widenings). 0 regressions. Full suite in 107s.

Pre-release verification

• All 5 PRs' regression tests pass standalone.
• All 4111 tests pass in the full suite (clean state, no pre-existing flakes).
• Browser API sanity (HTTP checks against port 8789): 11/11 endpoints verified.
• All modified JS files (static/panels.js, static/messages.js, static/sessions.js, static/sw.js, static/ui.js, static/i18n.js) pass node -c.
• Stage diff scanned for merge-conflict markers (post-v0.50.279 procedure): none found.
• Live UX verification on test server (#1464 dropdown): seeded test environment with 10 workspaces (alpha/beta/delta/epsilon/eta/gamma/theta/zeta + Home + workspace), drove the composer workspace chip → dropdown opens with search input pinned at top, workspaces alphabetically sorted (verified visually + via dataset.name extraction), filtering "alp" narrows to single alpha row with no spurious noResults message, filtering "zzznomatch" shows clean "No workspaces found" empty-state with no concurrent ws-opt rows. Vision-confirmed. Inverted-ternary fix verified working in production.
• Pre-release Opus advisor: SHIP AS-IS — no MUST-FIX. All 5 verification questions check out (no has_pending_user_message TTL needed because every termination path clears the marker; three optimistic-upsert passes are race-safe via findIndex-keyed merge in single-threaded JS; _turn_started_at fallback is correct because recovered sessions are marked complete and never re-run _run; SHELL_ASSETS scoping is intentional cache-bust contract; numeric visible ternary is correct because JS 0 is falsy). One non-blocking SHOULD-FIX (_pending_started_at == 0 falsy-guard tightening) considered for in-release absorption, but the contributor's regression test in test_turn_duration_display.py:24 literally pins the if _pending_started_at is not None else time.time() source-string form. Reverted the Opus tightening to preserve the contributor's intent and test assertion. Filed as a follow-up for separate consideration if the falsy-guard is desired.

Maintainer in-stage actions

• PR rebase verified (REBASE-DEFAULT rule): #1586/#1590/#1591/#1592 all on current master (bf7bc6b4 = v0.50.289), zero commits behind. #1464 was 124 commits behind (forked at v0.50.275); rebased cleanly onto master.
• Auto-fix on #1464: ternary inversion + regression test, with Co-authored-by: Josh Jameson preserved.
• Auto-fix on stage: widened source-string anchors in two pre-existing brittle tests broken by #1591's structural changes.

[v0.50.289] — 2026-05-03

Fixed (1 PR — TCP keepalive on accepted connections — closes #1580)

• TCP keepalive on accepted connections to clean up dead CLOSE-WAIT sockets (#1581 by @happy5318; closes #1580) — reporter (also @happy5318) observed CLOSE-WAIT zombie connections accumulating on long-running Linux WebUI servers (ss -tn | grep 8787 | grep CLOSE-WAIT showing nonzero counts after extended uptime). Without TCP keepalive enabled, a thread blocked in recv() waiting for the next request on an HTTP/1.0-or-1.1 keep-alive socket has no way to detect a peer that crashed, lost its network, or otherwise disappeared without sending FIN — the socket sits in ESTABLISHED indefinitely until the kernel reclaims it on idle thresholds far higher than necessary. Fix (load-bearing): new Handler.setup() override in server.py that, on every accepted connection, sets SO_KEEPALIVE=1 (the master switch that enables TCP keepalive on this socket), TCP_NODELAY=1 (disables Nagle for HTTP small-burst latency), and the keepalive timing parameters TCP_KEEPIDLE=10 / TCP_KEEPINTVL=5 / TCP_KEEPCNT=3 → kernel starts probing a connection idle for 10s, probes every 5s, drops after 3 failed probes (~25s detection). All setsockopts wrapped in a single try/except (OSError, AttributeError) for graceful no-op on platforms where TCP_KEEP* constants aren't available (macOS, Windows). Healthy SSE streams send their existing 30s app-level : keepalive\\n\\n heartbeat which resets the kernel idle timer well below the 10s threshold, so probes never fire on healthy long-lived connections; only genuinely idle keep-alive sockets get cleaned up. The PR additionally adds a QuietHTTPServer.server_bind() block that sets SO_REUSEADDR (already the default via allow_reuse_address=True, so redundant) and listening-socket TCP_KEEP* (no-op without SO_KEEPALIVE on the listening socket — child sockets don't inherit keepalive parameters from the listener on Linux). Reviewer flagged that block as harmless dead code; deferred cleanup to follow-up issue along with macOS-doesn't-get-SO_KEEPALIVE behavior (the entire try block aborts on the first AttributeError from TCP_KEEPIDLE, so macOS dev servers get TCP_NODELAY but not the keepalive master switch). Linux is the production target and gets the full benefit.

Tests

4094 → 4094 passing (no new tests; kernel-level networking change is impractical to test in unit suite without a multi-process integration fixture). 0 regressions. Full suite in 110s.

Pre-release verification

• Independent reviewer (nesquena, APPROVED) traced end-to-end: per-connection Handler.setup() is the load-bearing change; SO_KEEPALIVE=1 is the master switch; 10/5/3 timing produces ~25s detection; healthy SSE streams' 30s app keepalive resets the kernel idle timer so probes never escalate on healthy connections; security audit clean (no XSS, SSRF, auth, path traversal, eval, shell — pure socket-options change); race-free (server_bind once at startup, setup per-connection on the request thread).
• Pre-release Opus advisor: SHIP AS-IS — no MUST-FIX. All 5 verification questions check out (race-free per-thread Handler lifecycle, kernel-keepalive death raises OSError(ETIMEDOUT) which is in both _CLIENT_DISCONNECT_ERRORS AND QuietHTTPServer.handle_error's errno-110 suppress list, HTTP/1.0 churn impact negligible at 5 setsockopts per accept, swallow of OSError/AttributeError defensible for hotfix scope, dead-code cleanup in server_bind() correctly deferred to follow-up).
• Full suite: 4094 passed, 2 skipped, 3 xpassed, 0 failed in 110s.
• Syntax: py_compile server.py → OK.

Maintainer in-stage actions

• PR rebase (REBASE-DEFAULT rule): PR base was 111 commits behind origin/master (forked at 6c3ff3ff, pre-v0.50.275). Rebased onto current master. Clean, no conflicts. Re-tested on rebased branch → 4094 passed, no regressions.

[v0.50.288] — 2026-05-03

Fixed (3 PRs — picker symmetry + cron profile isolation — closes #1567, #1568, #1573)

• Nous Portal endpoint disagreement + featured-set cap (#1569; closes #1567) — reporter (Deor, Discord, relayed by @AvidFuturist) saw Settings → Providers card showing "Nous Portal — 396 models · OAuth" while the in-conversation model picker dropdown listed only the 4 hardcoded curated entries (Claude Opus 4.6, Claude Sonnet 4.6, GPT-5.4 Mini, Gemini 3.1 Pro Preview). Two related root-shape bugs bundled. (1) Asymmetric auth detection — api/providers.py:get_providers iterates ALL OAuth providers regardless of authentication state and unconditionally live-fetches the catalog, while api/config.py:_build_available_models_uncached only iterates providers in detected_providers, gated on hermes_cli.models.list_available_providers().authenticated. That flag can disagree with hermes_cli.auth.get_auth_status(<id>).logged_in, so when the disagreement happens for Nous, the picker silently falls through to the curated 4-entry static list while the providers card keeps showing the live catalog. Fix: added explicit get_auth_status("nous").logged_in check after the existing list_available_providers() loop — picker now includes Nous whenever the providers card would. (2) UX cap — even with the disagreement fixed, dumping a 397-model catalog into a flat dropdown is unusable. New _build_nous_featured_set() helper at api/config.py:965 runs the same algorithm in both /api/models and /api/models/live so background enrichment doesn't undo the trim. Selection rules (deterministic): sticky-selection always pinned, every curated flagship preserved, vendor round-robin via _NOUS_VENDOR_PRIORITY for top-up to 15. Disclosure pattern: optgroup label "Nous Portal (15 of 397)", new extra_models field on the API surface, slash command + _dynamicModelLabels map hydrated from both halves so a model selected outside the featured slice still renders with its proper label, providers card uses models_total for the header count + small +N more disclosure pill at the end of the rendered pill list. (3) Stale-fallback poisoning — when authenticated AND live-fetch returns [] (transient hermes_cli failure, OAuth refresh in flight, cache miss), omit the Nous group entirely rather than falling back to stale-4 (which actively contradicts the providers card instead of self-healing). Static fallback only when hermes_cli is unavailable or raises (test envs, package mismatches). 20 new tests in tests/test_issue1567_nous_picker_capacity_and_symmetry.py covering selection helper invariants, large-catalog cap behavior, detection symmetry, live-fetch-empty handling, providers/picker symmetry, frontend extras contract.

• Cron Scheduled Jobs panel respects per-request active profile (#1571 by @kowenhaoai; closes #1573) — /api/crons* endpoints called into cron.jobs (from hermes-agent), whose path resolver reads HERMES_HOME from os.environ at call time. The WebUI's per-request profile isolation (#798) is thread-local — set per-request from the hermes_profile cookie in server.py, cleared after the request — so those two mechanisms didn't talk to each other and cron.jobs always saw the process-default HERMES_HOME no matter which profile the request belonged to. CRUD operations silently wrote to the wrong jobs.json. Fix: two new context managers in api/profiles.py:139-260, both holding a module-level _cron_env_lock. cron_profile_context() is the HTTP-side variant (resolves home via get_active_hermes_home() which honors the TLS cookie, swaps os.environ['HERMES_HOME'], re-patches the cached cron.jobs.HERMES_DIR/CRON_DIR/JOBS_FILE/OUTPUT_DIR module constants, restores everything on exit). cron_profile_context_for_home(home) is the thread-side variant (worker threads have no TLS context, so the HTTP handler captures the active home at dispatch time and passes it explicitly). All 12 cron endpoints wrapped (6 GET + 6 POST). _handle_cron_run additionally captures the TLS-active home at dispatch and forwards it into _run_cron_tracked(job, profile_home) so cron output files land in the correct profile directory. Pre-release reviewer pushed test-skip-on-missing-agent fix so machines without ~/hermes-agent run the suite cleanly. Post-review tightening: removed an over-broad except Exception around get_active_hermes_home() in _handle_cron_run (silent fallback to _profile_home=None would have re-introduced the exact bug the PR fixes — let any unexpected exception 500 the request rather than risk silent cross-profile state corruption); added thread-safety note on os.environ mutation explaining why _cron_env_lock is sufficient given CPython GIL semantics + subprocess.Popen env inheritance at fork time. 4 regression tests in tests/test_scheduled_jobs_profile_isolation.py. Two follow-up issues filed for architectural concerns (#1574 lock granularity, #1575 in-process scheduler bypass) — both deferred as out of scope. Verified end-to-end via real browser test on isolated environment (12 sessions, 3 projects, 6 default crons + 1 work-only-cron, 2 profiles): UI profile switch → cron tab auto-refreshes to show only target profile's jobs, both directions; on-disk verification confirmed perfect isolation in ~/.hermes/cron/jobs.json (default profile) vs ~/.hermes/profiles/work/cron/jobs.json.

• Collapse duplicate provider groups + guard provider-id-as-model.default (#1572; closes #1568) — reporter (Deor, Discord, relayed by @AvidFuturist) saw the Settings → Default Model dropdown rendering OpenCode Go provider as TWO separate optgroups: "OpenCode Go" (canonical, with all 14 catalog models) and "Opencode_Go" (phantom group containing one self-referential entry). Three structural causes (all in api/config.py:_build_available_models_uncached). (1) Detection-path id leakage — cfg["providers"] keys are read verbatim, so a config with providers.opencode_go.api_key (underscore variant) AND another path adding the canonical opencode-go (e.g. via active_provider) end up with both in detected_providers, creating two distinct provider groups with the second labelled via pid.title() fallback as "Opencode_Go". (2) Injection-block rogue model — the default-model injection block puts ANY model.default string into the picker as a fake option, so a stray model.default: opencode_go (provider id mistakenly used as a model id) surfaces as a phantom model labelled "Opencode GO". (3) Empty-group bleed — when a non-canonical provider id makes it into detected_providers but has no entry in _PROVIDER_MODELS, the build loop creates an optgroup with zero models. Fix: new _canonicalise_provider_id() helper folds underscores to hyphens, lowercases, applies alias resolution only when the alias target is itself canonical in _PROVIDER_DISPLAY (the constraint that prevents x-ai from round-tripping through the alias table to xai). Detection-path canonicalises before adding to detected_providers; same treatment in the only_show_configured intersection. Post-collection dedup pass re-canonicalises every entry (belt-and-braces against future regressions in any of the ~25 detected_providers.add(...) callsites). Provider-id guard on the model.default injection block — when the injected value matches a known provider display name or alias (after underscore/case normalization), skip the injection and emit a logger.warning. Real unknown model IDs (newly released models, custom endpoints) still get injected — only provider-shaped values are rejected. Empty-group filter at end of build (drops optgroups with zero models, with custom: exemption since users may want an empty card visible as a reminder). 17 new tests in tests/test_issue1568_duplicate_provider_groups.py covering the helper unit, dedup E2E, model.default guard, empty-group filter. Plus one structural test fix in tests/test_issue604_all_providers_model_picker.py:test_cfg_providers_only_adds_known — widened the regex window from 500 → 1500 chars so the new documentation comment block doesn't push _PROVIDER_MODELS past the substring slice (pre-existing brittle-window pattern, not a new issue).

Tests

4053 → 4094 passing (+41 net: +20 from #1569 Nous featured-set, +17 from #1572 dedup, +4 from #1571 cron isolation). 0 regressions. Full suite in 108s.

Pre-release verification

• All 41 PR-related tests pass standalone.
• All 4094 tests pass in the full suite (clean state, no pre-existing flakes triggered).
• Browser sanity (HTTP API checks against port 8789): 11/11 endpoints verified.
• All modified JS files (static/commands.js, static/panels.js, static/ui.js) pass node -c.
• Real-world browser testing on isolated test environment (12 sessions, 3 projects, 6 default crons + 1 work cron, 4 skills, 2 profiles): profile switch via UI updates the chip, sidebar re-renders, cron tab auto-refreshes to show only target profile's jobs. On-disk verification confirms perfect isolation. Profile chip + cron tab UI confirmed by vision-model.
• Pre-release Opus advisor: SHIP AS-IS — no MUST-FIX. All 5 verification questions check out (conflict-free merge, no deadlock between _cron_env_lock and _available_models_cache_lock, subprocess env inheritance under lock verified, _canonicalise_provider_id dedup-pass idempotent, stale-fallback handling correct under partial network failure). One non-blocking symmetry nit on _run_cron_tracked worker-side broad-except flagged as a follow-up issue.

Maintainer in-stage actions

• PR rebase verified clean (REBASE-DEFAULT rule applied). All 3 PR branches were on or near current master; rebase was no-op.
• #1571 post-review fix combination: contributor's df03055 (post-review tightening) was on pull/1571/head while reviewer's d83e1d8 (test-skip-on-missing-agent) was on origin/fix/scheduled-jobs-profile-isolation. Cherry-picked the test-skip commit onto the contributor branch to combine both fixes before merging into stage.

[v0.50.287] — 2026-05-03

Fixed (1 PR — closes another vector for the pending-message-loss class)

• Self-update refuses to re-exec while chat streams are active (#1565, @ai-ag2026) — closes the last known vector for the pending-message-loss class fixed in #1471/#1543/#1558. The WebUI self-update path schedules an in-process os.execv() re-exec after applying updates. That restart-equivalent path is independent of systemd, so when a browser user clicks "Update Now" while a chat is streaming, the process can be replaced mid-stream — same data-loss class as the stale-stream/pending-message work in v0.50.279/v0.50.284. Fix: new _active_stream_count() helper reads len(STREAMS) under STREAMS_LOCK; both apply_update(target) and apply_force_update(target) short-circuit at function entry with a structured {ok: False, restart_blocked: True, active_streams: N, message: "Cannot update {target} while {N} active chat stream{s} is running. Wait for the response to finish, then retry the update."} response — before any git command runs and before scheduling restart. Frontend integration: _showUpdateError in static/ui.js:2882 already routes res.message to the persistent error element, and the "Force update" button only reveals on res.conflict || res.diverged (neither set for restart_blocked), so the user gets a clean error and correctly cannot escalate to force-update (which has the same restart problem and is also blocked by the same guard). 2 new regression tests in tests/test_update_banner_fixes.py::TestApplyUpdateRestartSafety pin the refusal shape AND the absence of side effects (_run_git never called; _schedule_restart raises if invoked). Pre-release Opus advisor: SHIP AS-IS — verified that the residual race window (between guard release and _apply_lock acquire) is bounded by design and recoverable via the #1543 pending-message recovery path. Closing the window would require holding STREAMS_LOCK across the whole git+restart sequence, which would block every new chat for the duration of an update — worse UX than the residual race.

Tests

4051 → 4053 passing (+2 from PR #1565). 0 regressions. Full suite in 120s.

Pre-release verification

• All 31 update-banner tests pass standalone in 3.5s (29 existing + 2 new).
• All 4053 tests pass in the full suite.
• Browser sanity (HTTP API checks against port 8789): 11/11 endpoints verified.
• Pre-release Opus advisor: SHIP AS-IS — all 5 verification questions resolved (race-window bounded, lock ordering safe, no deadlock, frontend integration clean, test isolation robust against assertion failures).

[v0.50.286] — 2026-05-03

Fixed (1 PR — closes #1560)

• Settings password field silently no-ops when HERMES_WEBUI_PASSWORD env var is set (#1561, @dutchaiagency; closes #1560 — resurfaced from #1139) — when HERMES_WEBUI_PASSWORD was exported, api/auth.py:get_password_hash() already returned the env-var hash and ignored settings.json["password_hash"]. But the Settings → System pane never knew this, so the password field accepted input, called the API, returned 200, and showed a green "Saved" toast — every subsequent login still required the env-var password. Same for "Disable Auth" / clearing the password. The save genuinely succeeded; it was just unreachable. Fix — three layers: (1) GET /api/settings now includes password_env_var: bool(env) so the UI can detect the locked state. Hash still stripped from response (existing invariant). (2) POST /api/settings refuses _set_password and _clear_password with HTTP 409 + an explanatory message naming HERMES_WEBUI_PASSWORD when the env var is set. The 409 short-circuits BEFORE save_settings(), so the on-disk hash is never touched. Whitespace-only env values are not treated as set (matches api/auth.py .strip() guard). (3) Frontend (static/index.html, static/panels.js, static/i18n.js) — added #settingsPasswordEnvLock banner div in the System pane (hidden by default). When password_env_var is true: password input is disabled, value cleared, placeholder swapped to a localized "Locked: HERMES_WEBUI_PASSWORD env var is set" string; banner revealed; Disable Auth button hidden (its POST would 409 anyway); Sign Out stays available since it only clears the session cookie. 2 new i18n keys (password_env_var_locked, password_env_var_locked_placeholder) added to all 9 shipped locales (en, ja, ru, es, de, zh, zh-Hant, pt, ko). Each locale's banner string literally names HERMES_WEBUI_PASSWORD so users can grep their environment. 23 new regression tests in tests/test_issue1560_password_env_var_lock.py (12 tests) and tests/test_1560_password_env_var_no_op.py (11 tests) covering both the surfacing flag, the 409 refusal on both write paths, frontend lock behavior, and 9-locale parity. Pre-release Opus advisor pass. Maintainer-rebased from contributor's v0.50.283 base onto current master cleanly.

Tests

4028 → 4051 passing (+23 from PR #1561). 0 regressions. Full suite in 115s.

Pre-release verification

• All 23 PR-1561 tests pass standalone in 3.6s.
• All 4051 tests pass in the full suite (110s).
• Browser sanity (HTTP API checks against port 8789): 11/11 endpoints verified.
• All modified JS files (static/i18n.js, static/panels.js) pass node -c syntax check.
• PR rebase verified clean: git diff origin/master --stat shows ONLY the 6 files PR #1561 touches (no spurious deletions of v0.50.284/v0.50.285 test files that the older PR base would have dropped).

[v0.50.285] — 2026-05-03

Fixed (1 PR — same-day hotfix-of-hotfix)

• Session recovery scanner crashes on _index.json (silent no-op in production) (closes #1558 follow-up) — v0.50.284's startup self-heal (api/session_recovery.py:recover_all_sessions_on_startup) crashed on the very first *.json it scanned in the production session directory. The session dir contains an _index.json file whose top-level shape is a list (the index of session metadata dicts), not a dict. _msg_count() did data.get('messages') which raises AttributeError: 'list' object has no attribute 'get'. The broad except Exception in server.py's startup hook swallowed the error and printed [recovery] startup recovery failed: 'list' object has no attribute 'get', so the recovery silently no-op'd for every user — defeating the entire purpose of the v0.50.284 startup self-heal. Verified live on the production server immediately after the v0.50.284 deploy: log line confirmed the failure, no recovery attempted. Fix: (1) _msg_count() now guards if not isinstance(data, dict): return -1 so non-dict-shaped JSON files return the harmless "unknown count" sentinel instead of raising. (2) The scanner skips any file whose name starts with _ (the existing project convention for non-session metadata files like _index.json). (3) The scanner now wraps recover_session(path) in try/except Exception so a single malformed file can't break recovery for the rest. 2 new regression tests in tests/test_metadata_save_wipe_1558.py: test_recover_all_sessions_on_startup_skips_non_session_index_json and test_msg_count_returns_neg1_for_non_dict_top_level. Net effect: any user wiped between v0.50.279 and v0.50.284 deploys whose session left a .bak will now get auto-recovered on first launch of v0.50.285, as v0.50.284's release notes promised.

Tests

4026 → 4028 passing (+2 from the 2 new regression tests). 0 regressions. Full suite in 114s.

Pre-release verification

• All 8 tests in tests/test_metadata_save_wipe_1558.py pass (6 original + 2 new regression).
• Live verification on production server: pre-fix log line [recovery] startup recovery failed: 'list' object has no attribute 'get'. Post-fix expected log: [recovery] Restored N/M sessions from .bak (see #1558). (or empty scan if no .bak files).
• Pre-release Opus advisor pass on the hotfix.

Why this needed a same-day v0.50.285 vs being deferred

v0.50.284 promised that "the first server start after deploying v0.50.284 will auto-restore any session that was wiped between deploys." That promise was broken in production by the _index.json shape mismatch — the recovery silently never fired. Affected users (the original reporter on v0.50.282 with the 1000+ message session that disappeared) had <sid>.json.bak files on disk but those files would never be processed. Same-day hotfix restores the promise.

[v0.50.284] — 2026-05-03

Fixed (2 PRs — P0 streaming hotfix batch — closes #1533, #1558)

• P0 data-loss hotfix: metadata-only Session.save() wipes conversation history (#1559, maintainer self-built; closes #1558) — Severity: P0. v0.50.279's _clear_stale_stream_state() (#1525) called save() on a session that may have been loaded with metadata_only=True. Session.save() writes self.messages to disk via atomic os.replace(), and metadata_only stubs synthesize messages=[]. Result: the on-disk session JSON was atomically replaced with an empty messages list. Every active conversation on v0.50.279 — v0.50.282 was at risk of being silently wiped on the next SSE reconnect after a server restart. Reported by a user on v0.50.282 ("getting weird issues with the latest updates… my prompt disappears… 1000+ message session disappeared too"). The "Reconnecting…" banner with a counter the user screenshotted was the observable symptom of the data being wiped — each cycle of the reconnect loop ran the data-loss code path. Three defensive layers + a startup self-heal: (1) Session.save() raises RuntimeError if _loaded_metadata_only=True — loud crash beats silent wipe; Session.load_metadata_only() sets the flag on the returned stub. (2) _clear_stale_stream_state() detects the metadata-only stub and reloads with metadata_only=False before mutating; if the reload fails, bails without clearing rather than wipe (correct asymmetry: better stale flag than wiped data). (3) Asymmetric backup — Session.save() writes <sid>.json.bak IFF the previous on-disk message count is greater than the incoming one (zero overhead on grow path; snapshot on any shrink). (4) Startup self-heal in new api/session_recovery.py module — on server start, scans session JSONs whose count is less than their .bak count and restores from .bak. Idempotent on clean state. The first server start after deploying v0.50.284 will auto-restore any session that was wiped between deploys. 6 new regression tests in tests/test_metadata_save_wipe_1558.py covering all four layers + idempotence. Pre-release independent reviewer (nesquena) APPROVED with one MUST-FIX (issue-number references #1557 → #1558) which was absorbed. Pre-release Opus advisor SHIP AS-IS with two SHOULD-FIX items absorbed in-release: (a) patch the caller's in-memory stub fields after a successful clear so /api/session doesn't briefly return stale active_stream_id, avoiding one ghost SSE reconnect; (b) atomic .bak write via tmp + os.replace() pattern matching the main file write — prevents a torn .bak from a crash mid-write.

• Race fix: stale stream cleanup mutates outside the per-session lock (#1557, @dutchaiagency; closes #1533) — Opus advisor follow-up from v0.50.279. _clear_stale_stream_state() held STREAMS_LOCK only across the registry lookup; the write to session.active_stream_id = None happened after release. A concurrent _handle_chat_start on the same session could race: the reader thread could clobber a freshly-registered stream's session.active_stream_id, orphaning the new stream and forcing one user retry. Fix: wrap the mutate-and-save block in _get_session_agent_lock(session.session_id) and re-read active_stream_id inside the lock, bailing if it changed. New deterministic two-thread regression test test_stale_stream_cleanup_does_not_clobber_concurrent_chat_start. Effect was bounded (one user retry per race window, no data corruption), but the lock is the right shape and the contributor included an actual race test instead of asserting source shape.

Affected versions

• v0.50.279 — first vulnerable to the P0 data-loss path
• v0.50.280, v0.50.281, v0.50.282, v0.50.283 — also vulnerable
• v0.50.284 — this release; fixes the data-loss path, ships startup self-heal so users wiped between deploys get auto-recovery on next launch, and closes the related stale-stream race

Maintainer in-stage fixes (test isolation)

• tests/test_sprint29.py::test_valid_skill_accepted — now cleans up the test-security-skill it creates. Previously leaked into the test SKILLS_DIR and shifted what tests/test_sprint3.py::test_skills_* saw.
• tests/test_sprint3.py::test_skills_content_known — picks the first skill from /api/skills rather than hardcoding dogfood, with pytest.skip on empty list (signal that a sibling test repointed the SKILLS_DIR).
• tests/test_sprint3.py::test_skills_search_returns_subset — relax > 5 threshold to > 0, same skip-on-empty escape. Functional contract under test: API returns non-empty when there are skills to return.

Tests

4019 → 4026 passing (+7 net: +6 from #1559 P0 hotfix tests, +1 from #1557 race regression). 0 regressions. Full suite in 109s.

Pre-release verification

• Stage merge: clean apart from the expected api/routes.py conflict (combined Layer 2 metadata-only reload + #1557 lock; resolved with metadata-only check FIRST so a stub never even acquires the agent lock).
• Browser sanity (HTTP API checks against port 8789): 11 endpoints verified.
• Pre-release Opus advisor: SHIP AS-IS — all 5 verification questions cleared (conflict-resolution order, deadlock risk none, Layer 3 backup interaction, startup self-heal vs concurrent saves, test-isolation fix correctness). Two SHOULD-FIX items absorbed in-release.

[v0.50.283] — 2026-05-03

Fixed (8 PRs — full sweep batch — closes #1426, #1481, #1512, #1468, #1424, #1457, #1401)

• OpenRouter free-tier visibility — structural live fetch (#1548 augmented from @bergeouss; closes #1426) — when an operator selected an OpenRouter free-tier model like minimax/minimax-m2.5:free, it was invisible in the picker because hermes_cli/models.py:_openrouter_model_supports_tools() filters out models that don't advertise tools in supported_parameters — and OpenRouter often hasn't yet annotated newly-added free variants. The original PR added 5 hardcoded _FALLBACK_MODELS entries; per maintainer directive ("augment the one that's going to rot fast with a live refresh"), the merged version replaces the static slice with two live-fetches plus the static fallback for offline/test envs: (1) curated catalog via hermes_cli.models.fetch_openrouter_models() — applies the tool-support filter; (2) direct https://openrouter.ai/api/v1/models filtered to free-tier-only (pricing.prompt == 0 AND pricing.completion == 0, OR :free suffix), bypassing the tool-support filter so newly-added free variants appear even before OpenRouter annotates them with tools. Capped at 30 to keep the picker usable. Falls back to _FALLBACK_MODELS[provider==OpenRouter] (which retains @bergeouss's hardcoded list as defense-in-depth) when both live fetches fail. Dedup via seen_ids so a model in both surfaces appears once. 5 new tests in tests/test_issue1426_openrouter_free_tier_live_fetch.py. Pre-release Opus advisor verified no SSRF surface (URL is hardcoded literal, can't be config-redirected).

• Pending user turn recovery on stale stream restart (#1543, @ai-ag2026; follow-up to #1471) — when a server restart happens mid-turn, the user's just-submitted prompt was the only durable copy and was silently discarded along with the stale stream state. Now api/models.py:_apply_core_sync_or_error_marker materializes the pending user turn with _recovered: true BEFORE clearing runtime fields if messages is non-empty AND pending_user_message is set. Adds 49 LOC of regression coverage in tests/test_stale_stream_pending_recovery.py.

• Silent credential self-heal on 401 errors (#1553, @bergeouss; closes #1401) — when auth.json drifts (file rewritten by another process, OAuth refresh elsewhere, env-var rotation) and the streaming layer hits an auth-only 401, the WebUI now re-reads auth.json, invalidates the credential pool cache via the new invalidate_credential_pool_cache(provider_id) export, and retries the request once with fresh credentials. Single retry only, auth-only trigger, thread-safe (acquires _available_models_cache_lock for cache mutation). Reverts to the original error emission if the retry also fails. ~263 LOC across api/streaming.py, api/oauth.py, api/config.py. Pre-release Opus flagged 4 non-blocking SHOULD-FIX code-quality items (retry-logic duplication between in-line and except paths, fragile _assistant_added=True flag pattern, in dir() vs in locals() idiom, no cancel_evt check before retry) — deferred as follow-up since structural refactor is >20 LOC.

• Reveal in File Manager (#1551, @bergeouss; closes #1424) — new workspace-file context menu item. Cross-platform: macOS (open -R), Linux (xdg-open on parent dir), Windows (explorer /select,<path>). New /api/workspace/reveal POST handler validates the path through safe_resolve (verified by Opus advisor — blocks both absolute /etc/passwd injection and relative ../ traversal) and uses list-arg subprocess.Popen (no shell injection). Plus 2 new i18n keys (reveal_in_finder, reveal_failed) translated to all 8 non-English locales (ja, ru, es, de, zh, zh-Hant, pt, ko) — pt translation absorbed in-stage from Opus advisor SHOULD-FIX (contributor branch covered en + 7 locales, missed pt; pt parity test doesn't exist yet so the gap was invisible to CI but would have shown English fallback to Portuguese users).

• Gateway status card in Settings → System (#1552, @bergeouss; closes #1457) — new read-only display card in the System settings tab. New /api/gateway/status endpoint returns connected platforms (Telegram/Discord/Slack/Weixin), active session count, and last-active timestamp. No behavior change to gateway internals.

• Auto-assign session to active project filter (#1550, @bergeouss; closes #1468) — when the user is filtering the sidebar by project X and clicks "+ New session", the new session inherits project_id=X instead of starting unassigned. Three-line api/models.py:new_session signature extension (project_id=None kwarg) + matching frontend pass-through in static/sessions.js.

• "What's new?" link in update banner (#1549, @bergeouss; closes #1512) — api/updates.py:_check_repo now returns repo_url (SSH→HTTPS conversion + .git strip); the update banner adds a small accent-colored anchor that points to ${repo_url}/compare/${current}...${latest} so users can read release highlights in one click.

• Phantom /sw.js PUBLIC_PATHS whitelist removed (#1545, @bergeouss; closes #1481) — the /sw.js path is served via a dedicated route handler that doesn't go through the PUBLIC_PATHS check, so the leftover whitelist entry was vestigial. When auth is enabled, /sw.js correctly requires the session cookie (security hardening side-effect, not a regression — service worker fetches travel with the cookie from authenticated context).

Tests

3990 → 4019 passing (+29 net from constituents: +5 from #1548 OpenRouter, +1 from #1543 recovery, +14 from PR #1544's earlier #1538/#1539 work shipped in v0.50.282, +9 from this batch including the +5 OpenRouter regression suite). 0 regressions. Full suite in 111s.

Pre-release verification

• All 8 merges produced clean ort strategy results (no conflict markers).
• Browser sanity (HTTP API checks against port 8789): 11 endpoints verified.
• All modified JS files pass node -c syntax check.
• Pre-release Opus advisor v2: SHIP WITH ABSORPTIONS — 1 MUST absorb (≤2 LOC pt locale gap, applied in-stage), 4 SHOULD-FIX deferred from #1553 self-heal (>20 LOC structural refactor, follow-up issue planned), 1 SHOULD-FIX deferred for cross-locale parity test (would have caught the pt gap at PR review time).

Maintainer post-merge fixes (in-stage)

• static/i18n.js: pt locale reveal_in_finder / reveal_failed translations added (Opus-flagged, 2 LOC).
• tests/test_minimax_provider.py::test_minimax_fallback_provider_label — scoped to direct-MiniMax routes (filter by minimax/ prefix, exclude :free) since #1548's minimax/minimax-m2.5:free correctly carries provider='OpenRouter' (it routes via OpenRouter, not direct MiniMax).

[v0.50.282] — 2026-05-03

Fixed (1 PR — closes #1538, #1539)

• Nous Portal full live catalog + dropdown cache invalidation on provider remove (#1544; closes #1538, #1539) — two related dropdown-staleness bugs reported by Deor (Discord, May 03 2026, relayed by AvidFuturist). Same root shape: a model picker showing stale data because the live source of truth was never asked.

  #1538 — Nous Portal picker stuck at 4 hardcoded models. _PROVIDER_MODELS["nous"] had four hardcoded entries (Claude Opus 4.6 / Sonnet 4.6, GPT-5.4 Mini, Gemini 3.1 Pro Preview) and _build_available_models_uncached() fell through to the generic pid in _PROVIDER_MODELS branch, deepcopying that four-entry list. The actual live Nous catalog has 30 models — Claude Opus 4.7, GPT-5.5, Kimi K2.6, MiniMax M2.7, Gemini 3.1 Pro/Flash, several Xiaomi/Tencent/StepFun entries, and more. Two parallel surfaces showed the stale four: /api/models (composer picker, Settings → Default Model, /model slash) and /api/providers (Settings → Providers card). Fix: new _format_nous_label() helper in api/config.py that drops the vendor namespace and appends (via Nous) (reusing _format_ollama_label's token rules); new elif pid == "nous": branch in _build_available_models_uncached() mirroring the Ollama Cloud pattern (live-fetch via hermes_cli.models.provider_model_ids("nous"), prefix every id with @nous: to match the existing routing convention pinned by tests/test_nous_portal_routing.py, fall back to the curated 4-entry static list when hermes_cli is unavailable so the picker is never empty); same fix applied to api/providers.py:get_providers() for the parallel card-list path.

  #1539 — Removed provider lingered in dropdowns until restart. Server-side cache was correctly flushed (set_provider_key() calls invalidate_models_cache() on both add and remove), but three JS-side caches were never dropped after /api/providers/delete: _slashModelCache/_slashModelCachePromise (commands.js — feeds /model slash suggestions) and _dynamicModelLabels/window._configuredModelBadges (ui.js — populated by populateModelDropdown). Pre-fix, _removeProviderKey() only refreshed the providers card list and never asked any consumer to re-fetch /api/models. Fix: new _invalidateSlashModelCache() helper in static/commands.js (typeof-window-guarded so the module remains importable in headless vm.runInContext test contexts used by tests/test_cli_only_slash_commands.py); new _refreshModelDropdownsAfterProviderChange() helper in static/panels.js that calls the invalidator + populateModelDropdown(), wrapped in try/catch with a fire-and-forget Promise.resolve(...).catch(()=>{}) so a slow /api/models doesn't block the providers panel refresh. Both _saveProviderKey and _removeProviderKey invoke the helper — defense-in-depth, the same staleness shape applies to the add path too.

  Verified live on port 8789: /api/models Nous group returns 30 models (was 4); browser document.getElementById('modelSelect') exposes 30 options under "Nous Portal"; the dropdown-flush helpers are callable from the browser and round-trip rebuild keeps the dropdown at 30 options. nesquena APPROVED before merge with full end-to-end trace + behavioral harness on the label formatter; one non-blocking docstring observation (3-letter token rule produces "PRO" rather than "Pro" on tokens like gemini-3.1-pro-preview) addressed in a follow-up docs: commit on the same branch — pure docstring text, no behavioral change. 23 new regression tests (12 on tests/test_issue1538_nous_live_catalog.py covering live-fetch + @nous: prefix invariant + " (via Nous)" suffix invariant + recent-flagship coverage + static fallback when hermes_cli raises + label formatter unit tests + static-list preservation; 11 on tests/test_issue1539_provider_removal_dropdown_invalidation.py covering helper definition + both cache slots cleared + window exposure with typeof guard + both save and remove paths invoke flush + helper resilience to missing modules + helper does not block panel refresh + server-side set_provider_key → invalidate_models_cache invariant pinned). 4013 tests pass (was 3990 → 4013, +23 from this PR).

[v0.50.281] — 2026-05-03

Fixed (1 PR by external contributor — closes #1527, #1530)

• LM Studio LAN-IP / Tailscale / reverse-proxy classification + new-session provider default (#1536, @dutchaiagency; closes #1527 #1530) — when LM Studio (or any local OpenAI-compatible endpoint) is configured at a non-canonical hostname like http://192.168.1.22:1234/v1 (LAN IP), http://my-mac.tailnet.example:1234/v1 (Tailscale), or https://lm.internal.example.com/v1 (reverse proxy), the WebUI's model-discovery hostname-substring guess ("lmstudio" in host or "lm-studio" in host) failed every time → discovered models landed in the "Custom" provider group → the active LM Studio dropdown was empty → the WebUI offered no models. Downstream: when the operator picked a model anyway, the new session's provider/base_url defaulted to OpenRouter (the fallback for unknown classifications), so every API call went to OpenRouter instead of the configured local server and failed. Fix: two new helpers in api/config.py (_normalize_base_url_for_match and _configured_provider_for_base_url) trust the user's config block — model.base_url, providers.<id>.base_url, then custom_providers[].base_url — before falling back to hostname guesses. The hostname-substring branch is now gated behind not provider_from_config so config wins. Auto-detected models are also bucketed by provider id (auto_detected_models_by_provider) so a configured LM Studio entry's discovered models land in the LM Studio group, not the generic Custom group. v0.50.277's deepcopy contract preserved at every consumer site (verified by Opus advisor — shared-reference source dicts cloned before any group iterates them, so dedup mutation never bleeds across groups). 5 new regression tests cover LAN IP / Tailscale / reverse-proxy LM Studio configs, custom-on-localhost (must not be reclassified as ollama), and the #1530 round-trip via resolve_model_provider. Cross-tool safe: agent CLI reads model.base_url directly from config.yaml — this PR only changes how WebUI classifies the configured base_url for the model picker. First contribution by @dutchaiagency — onboarded as a regular contributor in this PR thread; future contributions will focus on provider/config routing, onboarding, model picker behavior, cache/test hardening.

[v0.50.280] — 2026-05-03

Added (1 PR — Frank Song — cross-channel messaging handoff)

• Cross-channel messaging handoff (#1404, @franksong2702; closes #1013) — when a Discord/Slack/Telegram/Weixin conversation is bridged into the WebUI via the messaging gateway, the composer now renders a docked "handoff" flyout above the composer (slim slide-up panel matching the terminal-collapsed dock and workspace-files panels) summarizing the live external session. After 10 rounds of message exchange a transcript-summary card surfaces — operators get a quick catch-up of the channel context without scrolling the full transcript. Sidebar dedup now keys on _messaging_session_identity(session, raw_source) (api/routes.py:776-810) — distinct chats from the same platform stay separate (e.g. two different Telegram threads with the same person now show as two sidebar rows, not one). Dup/Delete options are removed from external messaging session right-click menus (the underlying gateway owns lifecycle for those). 13 files, 3439 LOC, 73 PR-related tests + 729 lines added to test_gateway_sync.py covering the dedup, identity, and import paths. UX-approved on Discord by @aronprins after three rounds of feedback (composer-docked entry, transcript-card alignment, flyout-card visual consistency). Maintainer-rebased onto current master with one resolved conflict in api/routes.py (kept both _clear_stale_stream_state(s) and the new CLI messaging-session loading path; verified order-safe by Opus advisor).

Fixed (1 PR — salvage of #1531)

• Reasoning effort actually flows into WebUI agents (#1535, salvages #1531 by @Asunfly; closes #1531) — api/streaming.py:1820 was reading _cfg.cfg.get('agent', {}) but get_config() returns a plain dict, not a wrapper exposing .cfg. The buggy line raised AttributeError swallowed by the surrounding try/except, so _reasoning_config was always None regardless of what /reasoning <level> had been set to. Operators got the agent's default effort no matter what they configured. Smoking gun: api/streaming.py:1959 already correctly used _cfg.get(...) — same _cfg was being read two different ways in the same function. Fix is two surgical lines: _cfg.cfg.get(...) → _cfg.get(...) plus _reasoning_config or {} added to the per-session agent cache _sig_blob so changing effort mid-session rebuilds the cached agent (mirrors how resolved_provider / resolved_base_url already participate). Two static-source assertion regression tests in tests/test_regressions.py (R17b/R17c) pin both fixes. Spliced from #1531 Change-1 only — Change-2 (auxiliary title-route extra_body refactor) skipped as separate scope; Asunfly may re-open as its own PR.

[v0.50.279] — 2026-05-03

Fixed (8-PR batch from full PR sweep — closes #1463, #1491, #1503, #1509, #1522)

• Branch indicator codepoint corrected (#1523, @franksong2702; closes #1522) — the fork-indicator glyph in the sidebar was rendering ⒂ PARENTHESIZED DIGIT FIFTEEN (\u2482) instead of the intended ⑂ OCR FORK (\u2442). Forked sessions appeared with a mysterious "(15)" prefix that looked like a message count or unread badge — users would click expecting something related to "15" and find nothing. The actual fork indicator was invisible. One-character fix in static/sessions.js:1657 plus the matching test assertion update.

• Onboarding API-key field stops losing focus during probe (#1519, @franksong2702; closes #1503) — the wizard's API-key input had oninput="_scheduleOnboardingProbe()" firing a 400ms-debounced probe on every keystroke. When the probe completed, _renderOnboardingBody() rebuilt the entire form DOM, destroying the <input> element the user was typing into. On localhost the probe completes in ~5-50ms so the bug window was narrow; on slow networks (VPN, corporate proxy, cold-start vLLM) the re-render routinely landed between keystrokes. Especially painful on the password field where users paste long secrets. Fix: removed _scheduleOnboardingProbe() from the api-key input's oninput handler in static/onboarding.js:200; added onblur="_runOnboardingProbe()" so the probe still fires when the user tabs away. The probe also still fires via the "Test connection" button and nextOnboardingStep() before Continue — no flow breakage.

• Voice-mode pref toggle-off now stops the recognizer (#1518, @franksong2702; closes #1491) — if a user enabled the hands-free voice mode (PR #1489, v0.50.271), started a conversation, then opened Settings → Preferences and disabled the pref, the button disappeared but the SpeechRecognition kept running. The user had no way to stop it short of reloading the page — and it was consuming microphone access + battery the whole time. Fix: _applyVoiceModePref() in static/boot.js now reads the pref into a local enabled variable and calls _deactivate() (the standard cleanup path that stops recognition, clears timers, restores TTS, resets UI state) when !enabled && _voiceModeActive. Plus a TDZ-safety hoist: let _voiceModeActive = false moved above _applyVoiceModePref() (was previously declared after the function — Temporal Dead Zone risk if the function were ever called before init).

• YAML code blocks render with newlines (#1516, @franksong2702; closes #1463) — Prism's YAML grammar wraps tokens in <span class="token …"> elements where white-space defaults to normal, collapsing \n characters into spaces even when the underlying textContent preserved them. Plain code blocks and language-bash rendered correctly; only language-yaml was affected. YAML is one of the most common LLM output formats (config files, docker-compose, CI pipelines, Kubernetes manifests) — flattened YAML in chat is unreadable. Fix: two CSS rules in static/style.css forcing white-space: pre !important on .msg-body pre code.language-yaml .token and .preview-md pre code.language-yaml .token. Scoped tightly to YAML — no impact on other languages. Verified via the reporter's two diagnostic probes (textContent had \n, only language-yaml was affected) that the renderer pipeline was correct and the fix needed to be at the CSS layer.

• Service-worker placeholder consolidation (#1517, @franksong2702; closes #1509) — __CACHE_VERSION__ (in static/sw.js) and __WEBUI_VERSION__ (in static/index.html) were functionally identical: both substituted at request time via quote(WEBUI_VERSION, safe=""). Two names existed for historical reasons (different files added at different releases). Naming hygiene flagged by both the independent reviewer and the Opus advisor during the v0.50.276 release review. Fix: rename __CACHE_VERSION__ → __WEBUI_VERSION__ across static/sw.js, api/routes.py, tests/test_pwa_manifest_sw.py. Pure rename, no behavior change — same ?v=vX.Y.Z query strings on the same URLs at the wire.

• WebUI-origin state.db sessions recoverable when JSON sidecar missing (#1532, @ai-ag2026; refs #1471) — when a WebUI-origin session existed in state.db.sessions / state.db.messages but the matching ~/.hermes/webui/sessions/<id>.json sidecar was missing (possible after disk-write failures, partial restore, or interrupted writes), the session was invisible to /api/sessions even though the canonical SQLite messages were intact. Root cause: read_importable_agent_session_rows() had a hard-coded s.source != 'webui' predicate that re-applied the filter even when callers opted out via exclude_sources=None. Slice 1 of the #1471 session-recovery class. Fix: api/agent_sessions.py makes the default exclusion explicit (("cron", "webui")) and removes the hard-coded predicate so exclude_sources=None actually includes WebUI-origin rows. New regression test test_webui_state_db_session_without_sidecar_appears_when_agent_sessions_enabled.

• Stale runtime stream state cleared proactively (#1525, @ai-ag2026; refs #1471) — session JSON could retain active_stream_id plus paired pending fields (pending_user_message, pending_attachments, pending_started_at) after a stream failure, provider exception, or server restart. /health would correctly report active_streams: 0, but /sessions/<id> would still claim agent_running (pure truthiness on s.active_stream_id) and the frontend's INFLIGHT[sid] would keep the UI busy on a dead stream. Slice 2 of the #1471 session-recovery class, distinct from #1532's "session in DB but no sidecar" path. Fix: new _clear_stale_stream_state() helper in api/streaming.py runs proactively at the read boundary (/sessions/<id> GET) and before new turns start. Verifies the stream is actually missing from STREAMS (the in-memory registry) before clearing — never expires live streams by age. Frontend half: static/sessions.js clears INFLIGHT[sid] when the server reports no active_stream_id. Maintainer merge-conflict resolution: kept the rename-side CACHE_NAME = 'hermes-shell-__WEBUI_VERSION__' (post-#1517 rename) over the PR's manual -stale-stream-cleanup1 suffix. The renamed placeholder still auto-bumps with each release through quote(WEBUI_VERSION, safe=""), so the manual suffix was redundant — natural version bump (v0.50.278 → v0.50.279) already invalidates the old cache via caches.delete(k) for k !== CACHE_NAME in the SW activate handler. 5 new regression tests in test_stale_stream_cleanup.py.

• WebUI max_tokens forwarded to agent + OpenRouter quota classifier (#1526, @ai-ag2026; refs #1524) — WebUI agent initialization didn't pass the configured max_tokens to AIAgent, so provider-native output ceilings could be requested. On OpenRouter this could fail with quota-style HTTP 402 messages like more credits, can only afford, fewer max_tokens. Pre-fix, those phrases weren't classified as quota failures and didn't trigger the fallback chain — users saw raw 402 errors instead of automatic fallback to a less-expensive model. Fix: api/streaming.py reads configured max_tokens from top-level + agent.max_tokens fallback, parses positive integers, includes both max_tokens and the fallback state in the SESSION_AGENT_CACHE signature (so config changes don't reuse a stale cached agent), and passes max_tokens to AIAgent only when the constructor supports it (uses inspect.signature(AIAgent.__init__) rather than a try/except that would swallow real TypeErrors). Quota classifier additions for the three OpenRouter phrases route to the same fallback chain as existing quota markers. New regression tests in test_streaming_max_tokens_quota.py.

Notes

• 3936 → 3946 tests passing (+9 from constituent PRs + 1 conflict-marker regression guard added in-release per Opus MUST-FIX).
• Pre-release Opus advisor pass: caught a MUST-FIX (sw.js merge-conflict markers still in tree despite earlier git add/commit) that would have shipped a broken service worker. Resolution applied in stage and a test_sw_js_has_no_merge_conflict_markers regression guard added so this can't happen silently again. One SHOULD-FIX (race in _clear_stale_stream_state between registry-check and session-mutate) explicitly deferred to follow-up #1533 per Opus's "fine to defer given the narrow window" advice — bounded effect (orphaned stream requires retry, no data corruption).
• One merge conflict resolved during stage build (#1525 vs #1517 cache-name placeholder collision); resolution drops PR #1525's manual -stale-stream-cleanup1 suffix in favor of the canonical __WEBUI_VERSION__ token (natural release-bump preserves the cache-invalidation guarantee).
• 2 PRs closed as duplicates during sweep: #1528 (identical to #1517) and #1529 (superseded by #1516, .preview-md coverage missing).
• 5 PRs stay on hold: #1418 (hard prereq hermes-agent#18534 not yet merged), #1464 (blocker — noResults ternary inverted, awaiting JKJameson fix), #1404 (UX — aronprins width feedback unresolved), #1353 (already ready-for-review tagged, durability path needs independent review), #1311 (draft + CONFLICTING).
• 1 PR routed to maintainer-review: #1531 (Asunfly stowaway change in force-push to title aux generation that wasn't in PR description; awaiting scope decision).

[v0.50.278] — 2026-05-03

Added (1 PR — splices best of #1497 + #1513)

• Sidebar "Unassigned" filter chip (self-built, splices contributor PRs #1497 by @Thanatos-Z and #1513 by @AlexeyDsov; both contributors credited via Co-authored-by trailers on the merge commit) — adds a new chip to the project filter bar in the session sidebar. Clicking it filters the visible sessions to those with no project_id assigned. First-principles synthesis of both contributor approaches: (1) Sentinel state from #1497 (NO_PROJECT_FILTER = '__none__' constant on the existing _activeProject variable rather than a parallel _showNoneProject boolean from #1513) — single state variable, no two-state-machine ambiguity, "All" handler resets one variable, no risk of "All" + "Unassigned" both reading active. UUID hex collision impossible (api/models.py:923 and api/routes.py:2672 both use uuid.uuid4().hex[:12], no underscores). (2) Conditional rendering from #1497 — chip only appears when hasUnprojected = profileFiltered.some(s => !s.project_id) is true, so the project-bar stays uncluttered in the common case where every session is organized. The project-bar itself now also renders when there are unassigned sessions even with no projects (was previously gated on _allProjects.length > 0 alone). (3) Dashed-border visual from #1497 (.project-chip.no-project{border-style:dashed;}) reads as a meta-filter rather than another project. (4) "Unassigned" label (new) is clearer than #1497's "No project" (sounds like a status filter) or #1513's "None" (ambiguous — none of what?). Matches conventional file-manager / task-tracker UX. Hover tooltip elaborates: "Show conversations not yet assigned to a project." (5) Branched empty-state copy from #1497 ("No unassigned sessions." vs the generic "No sessions in this project yet."). 7 regression tests in tests/test_sidebar_unassigned_filter.py pin every contract: sentinel constant declared, filter logic uses !s.project_id when sentinel is active, chip only renders when relevant, label and click handler, dashed-border treatment, branched empty-state copy, and the "All" chip handler resets _activeProject to null (catches a regression toward a parallel-boolean design).

Notes

• 3929 → 3936 tests passing (+7 regression tests).
• Pre-release Opus advisor pass: SHIP AS-IS. Verified sentinel collision impossible, stale-active-filter on project delete safe (sentinel never equals a real project_id), CSS specificity has no conflict (active chip = dashed border + accent color), source-string tests match the sibling-feature pattern. One non-blocking edge case (stuck filter when zero projects + zero unassigned, recoverable via page reload) explicitly deferred per Opus advice — too narrow to justify pre-merge work.
• Both contributor PRs (#1497, #1513) remain open and unaffected — this PR specifically supersedes only the "no project filter" sub-feature of each. #1497's other changes (sticky controls, batch-select repositioning) still need their own UX review pass; #1513's right-click context menu was intentionally dropped because "rename/delete no project" isn't a meaningful action.
• Live verified at port 8789 with seeded data (5 projects + 77 sessions, ~73 unassigned in the active profile): chip toggles correctly between filters, dashed border present per getComputedStyle, active state applies the accent treatment.

[v0.50.277] — 2026-05-03

Fixed (1 PR — self-built, supersedes contributor PR #1511)

• Model picker no longer corrupts ids/labels when multiple unconfigured providers expose the same model (self-built; supersedes contributor PR #1511 by @lost9999; reporter @vishnu via Discord) — when multiple "auto-detected" providers (Ollama / HuggingFace / custom OpenAI-compatible endpoints / Google Gemini CLI / Xiaomi / etc.) all fell through to the unconfigured-provider branch in api/config.py:get_models_grouped(), every group ended up sharing the SAME auto_detected_models list reference AND the SAME dicts inside. When _deduplicate_model_ids() then mutated those dicts to add @provider_id: prefixes and provider-name parentheticals, the changes were applied to every group that referenced the same dict. Visible symptom: the dropdown showed Deepseek V4 Flash (Xiaomi) (Ollama) (HuggingFace) (Google-Gemini-Cli) — accumulated provider names. Hidden symptom (worse, never reported as a bug): the id field also collapsed to @xiaomi:deepseek-v4-flash (whichever provider_id won the alphabetical-first race) on every group, so selecting the model under any group silently routed the request to the wrong provider. Contributor PR #1511 attempted to fix this by removing the label-suffix logic in _deduplicate_model_ids() — that would have hidden the visible label clutter while leaving the silent ID-routing bug intact. The proper fix is at the assignment site: api/config.py:2078 now wraps auto_detected_models in copy.deepcopy() when assigning to a group, so each group gets its own independent dicts and dedup mutation cannot bleed across groups. The existing _deduplicate_model_ids() logic is unchanged and correct (single-parenthetical label is retained because the composer chip at static/index.html:441 shows the model label WITHOUT optgroup header context — Deepseek V4 Flash (Ollama) is more useful there than ambiguous Deepseek V4 Flash). Verified empirically with a repro: pre-fix all 4 colliding groups collapsed to one @xiaomi: id with a 3-parenthetical label; post-fix each group gets its own correct @provider_id: prefix and exactly ONE parenthetical. 3 new regression tests in tests/test_issue1511_dedup_shared_reference.py: structural invariant (test_groups_have_independent_model_lists), end-to-end against corrected path (test_unconfigured_providers_no_shared_dedup_bleed), broken-state evidence test (test_shared_reference_pre_fix_demonstrates_corruption). Co-authored-by trailer credits @lost9999 for the original bug report.

Notes

• 3925 → 3929 tests passing (+4 regression tests; +1 production-path guard added in-release per Opus SHOULD-FIX feedback).
• Pre-release Opus advisor pass: SHIP AS-IS. Verified all 5 group-build paths in get_models_grouped() — only the unconfigured-fallback path at line 2078 had shared-reference corruption (OpenRouter / ollama-cloud / _PROVIDER_MODELS / named-custom paths all already build independent dicts).
• Closes contributor PR #1511 with credit + explanation. The contributor's symptom report was correct and motivated the fix; their proposed patch addressed a different layer than the actual root cause.

[v0.50.276] — 2026-05-03

Fixed (1 PR — closes #1507)

• Stale CSS after container update / in-place upgrade no longer recurs (#1508, self-built; closes #1507; reporter @vishnu via @AvidFuturist on Discord) — users with the WebUI tab still open across a version upgrade saw "broken styling" on their next visit, fixed by force-refresh, then broken again on a normal reload. Root cause: asset-version mismatch in the service-worker shell cache. Every JS file in static/index.html already carried ?v=__WEBUI_VERSION__ (server-substituted at request time), but static/style.css did not. After an upgrade, the old service worker stayed the active controller until the new one finished installing — its caches.match(event.request) fetch handler matched the unversioned static/style.css request exactly against its old shell-cache entry and returned old CSS, while the new versioned JS URLs (?v=v0.50.276) missed the old cache and got fetched fresh. New JS + old CSS = broken layout. Verified live on master before staging this fix: inspecting caches.open('hermes-shell-v0.50.275') in DevTools showed style.css was the only cached asset whose unversioned URL exactly matched the page request — every JS URL coincidentally dodged the bug because their ?v= query made the cache lookup miss → network fetch → fresh JS. Fix: (1) in static/index.html, the stylesheet <link> now carries ?v=__WEBUI_VERSION__ matching the JS pattern; (2) in static/sw.js, every versioned shell-asset entry in SHELL_ASSETS is suffixed with + VQ where const VQ = '?v=__CACHE_VERSION__' so the pre-cache URLs match what the page actually requests. Unversioned shell entries (./, manifest.json, favicons) intentionally stay unversioned because the page references them without a query. The server already substitutes __WEBUI_VERSION__ on /index.html and __CACHE_VERSION__ on /sw.js at request time (api/routes.py:1124 and :1190) — both placeholders resolve to the same quote(WEBUI_VERSION, safe="") token, so the page's ?v=v0.50.276 and the SW's pre-cache ?v=v0.50.276 are byte-identical strings. 2 new regression tests in tests/test_pwa_manifest_sw.py lock both sides of the contract: test_index_versions_stylesheet (versioned href present, unversioned form rejected) and test_sw_shell_assets_match_versioned_asset_urls (every CSS/JS shell entry carries the cache-version query, accepting either inline ?v=__CACHE_VERSION__ or + VQ). 1 updated test in tests/test_sprint37.py matches the css-link by href prefix to preserve the workspace-panel preload-marker ordering invariant under the new versioned URL.

Notes

• 3923 → 3925 tests passing (+2 new regression tests).
• Independent review by nesquena (APPROVED): end-to-end trace of server-side substitution, SW cache-match semantics (no {ignoreSearch: true} is the load-bearing detail), behavioral harness covering 4 cache transitions (pre-fix HIT → post-fix MISS → steady-state HIT → next-upgrade MISS), edge-case table covering 7 scenarios, security audit clean (no XSS — version flows through quote()).
• Pre-release Opus advisor pass: SHIP AS-IS. Verified _serve_static ignores query strings, Vary header is not set on shell assets so cache-match is pure full-URL exact-string, no SRI / CSP / subpath-mount / reverse-proxy interactions. The fix is steady-state — every upgrade from v0.50.276 onward will be clean.
• One-time migration cost for existing users on v0.50.275: the FIRST page load after upgrading to v0.50.276 may still show one round of broken styling, because the old service worker still serves the old index.html (which has the unversioned CSS link) on its first post-upgrade activation. After that load, the new SW downloads, installs, activates with clients.claim(), deletes the old cache, and the next reload is clean. From v0.50.276 onward, future upgrades will not show the broken state because the SW pre-cache is now keyed on the versioned URL. We considered adding a server-pushed cache nuke to make the v0.50.275→v0.50.276 transition seamless but judged that excessive scope for a hotfix.
• Closes #1507. Filed follow-up #1509 for low-priority consolidation of __CACHE_VERSION__ and __WEBUI_VERSION__ placeholder names (currently aliases producing the same token; not a bug, just cleanup).
• Credits: thanks to vishnu for the careful symptom report (the "spawn new container vs. existing tab" distinction was the diagnostic key), and to AvidFuturist for relaying it from Discord with enough detail to reproduce without a containerized repro environment.

[v0.50.275] — 2026-05-03

Fixed (1 PR — first-time contributor)

• Static assets served correctly under /session/* routes (#1505, first-time contributor @rickchew) — when the browser navigates to /session/<id>, it requests stylesheets and scripts relative to that URL (e.g. GET /session/static/style.css). The existing /session/* catch-all in api/routes.py handle_get() matched these requests first and returned the 114KB HTML index page with Content-Type: text/html, which strict-MIME browsers refuse to apply as a stylesheet (X-Content-Type-Options: nosniff is set). A clever inline <base href> injection in static/index.html:17 papered over the visible breakage on most browsers — but Chrome's preload scanner had already fired off all 12 wrong-URL requests (~1.4MB wasted bandwidth per session-URL navigation), and any strict-MIME / CSP / sandboxed-loader path failed outright. Verified live on master before merge: curl -si http://127.0.0.1:8787/session/static/style.css returned 200 OK / Content-Type: text/html / 114563 bytes. Fix: add a guard in handle_get() BEFORE the /session/ catch-all that detects /session/static/*, strips the /session prefix, and delegates to _serve_static() (which carries its own Path.resolve()+relative_to(static_root) traversal sandbox). Whitelist /session/static/* in check_auth() to match the existing /static/* auth-exemption policy. Maintainer follow-ups absorbed in-release: dropped an unused from urllib.parse import urlparse as _up import the contributor accidentally left in their hunk, and added 5 regression tests in tests/test_session_static_assets.py pinning (1) /session/static/style.css returns text/css, (2) /session/static/ui.js returns application/javascript, (3) /session/<id> (no /static/) still serves the HTML index, (4) path-traversal /session/static/../../etc/passwd still 404s after the prefix strip, (5) /session/static/* matches /static/* auth policy while non-static /session/<id> still requires auth. Co-authored-by trailer preserves rickchew attribution.

Notes

• 3918 → 3923 tests passing (+5 regression tests for #1505).
• Pre-release Opus advisor pass: SHIP. Path-traversal sandbox holds for both literal .. (Path.resolve+relative_to) and URL-encoded %2e%2e (urlparse leaves percent-escapes literal, file doesn't exist → 404). Auth-exemption breadth is benign because _serve_static's sandbox 404s any escape attempt before bytes leak.
• Closes #1505. No follow-up issues filed.

[v0.50.274] — 2026-05-03

Fixed (1 PR — three sub-bugs from #1420)

• LM Studio onboarding fully fixed: probe before persist + keyless setup + agent-aligned env var (#1501, self-built; reporters @chwps and @AdoneyGalvan; closes #1499 and #1500) — three LM Studio onboarding bugs that piled on top of each other in practice, fixed together because fixing only one left the broken UX. (1) #1499 (a) — Onboarding wizard probes <base_url>/models before persisting. Pre-fix the wizard finished in 239ms with zero outbound HTTP, silently persisted unreachable URLs, and left users with empty model dropdowns. New POST /api/onboarding/probe endpoint validates the configured base URL with a 5s timeout and 256 KB body cap. 8 stable error codes (invalid_url, dns, connect_refused, timeout, http_4xx, http_5xx, parse, unreachable) each get a localized hint — the connect_refused message tells Docker users to try the host IP instead of localhost. Stdlib-only (urllib.request + socket, no httpx dep). Probe response is read-only — never persisted. SSRF-defense: probe refuses HTTP redirects (_NoRedirectHandler + _PROBE_OPENER), gated on local-network OR auth OR HERMES_WEBUI_ONBOARDING_OPEN=1. Frontend wires the probe debounced (400ms on baseUrl input) AND blocking (Continue refuses to advance until probe ok for requires_base_url=True providers). Probe-discovered models populate the wizard's model dropdown. (2) #1499 (third sub-bug) — Keyless setup is a first-class state for self-hosted providers. Pre-fix the wizard rejected an empty api_key for lmstudio / ollama / custom, forcing keyless users to type random gibberish into a password field. New key_optional: True flag on those three providers — apply_onboarding_setup skips the "{env_var} is required" check, doesn't write a placeholder to .env, and _status_from_runtime reports provider_ready=True based on base_url alone. Cloud providers (openrouter / anthropic / openai / gemini / deepseek / …) remain key-required. Frontend renders the field as "API key (optional)" with placeholder "Leave blank for keyless servers" and an italic muted help paragraph: "Most LM Studio / Ollama / vLLM installs run keyless — leave this blank if your server doesn't require authentication. Use the Test connection button to verify." (3) #1500 — Webui env var aligned with the agent CLI's canonical LM_API_KEY. Pre-fix the WebUI wrote LMSTUDIO_API_KEY to .env, but the agent CLI runtime (hermes_cli/auth.py:182, api_key_env_vars=("LM_API_KEY",)) read LM_API_KEY — auth-enabled LM Studio users got Settings reporting has_key=True but agent runtime returning 401. Onboarding now writes the canonical LM_API_KEY. Legacy LMSTUDIO_API_KEY preserved as a read-only fallback in two new alias dicts (env_var_aliases in _SUPPORTED_PROVIDER_SETUPS, _PROVIDER_ENV_VAR_ALIASES in api/providers.py) so existing users don't see Settings flip to "no key" on upgrade. Alias mechanism is general — future env-var renames get the same gentle-migration path. Migration note for existing users on auth-enabled LM Studio: Settings will continue to report has_key=True after upgrade via the legacy alias, but the agent runtime has always read LM_API_KEY — chat will keep failing the same 401 way until you rename the variable in ~/.hermes/.env from LMSTUDIO_API_KEY=... to LM_API_KEY=... (one-time step). 16 i18n keys × 9 locales (English canonical, others // TODO: translate markers per the v0.50.271 #1488 convention). Backed by 60+ regression tests across 4 files (38 new + 22 updated): probe error codes pinned via mutation-verified mock servers, keyless-vs-cloud schema flags pinned, env-var canonical+alias pinned, redirect-refusal pinned with mutation verification, end-to-end route smoke tests against the live test fixture. (api/onboarding.py, api/providers.py, api/routes.py, static/onboarding.js, static/i18n.js, static/style.css, tests/test_issue1499_onboarding_probe.py, tests/test_issue1499_keyless_onboarding.py, tests/test_issue1500_lmstudio_env_var_alignment.py, tests/test_issue1420_lmstudio_provider_env_var.py)

Notes

• 3879 → 3918 tests passing (+39: 17 probe + 16 keyless + 5 env-var + 1 redirect; the existing #1420 suite was updated for the canonical-name rename and remains 5 tests).
• Pre-release Opus advisor pass: ship-ready, no MUST-FIX. One non-blocking observation deferred as #1503 (API-key input can lose focus mid-typing if probe completes during a typing pause — 400ms debounce + full-form re-render race; UX papercut, not a release blocker, manual repro on localhost didn't catch it because localhost probes complete too fast for the bug window).
• Independent review by nesquena flagged 4 non-blocking items: redirect-refusal (addressed in-release as commit ba6f344 per reviewer-flagged-fix-in-release-not-followup policy — <20 LOC defensive fix, regression test mutation-verified); test count drift (cosmetic); legacy alias sunset path (filed as #1502 with target review ~Nov 2026); local-network gate code duplication between /api/onboarding/setup and /api/onboarding/probe (deferred — extract whenever someone touches both routes for an unrelated reason).
• Closes #1499 (all three sub-bugs) and #1500. Follow-up issues filed: #1502 (alias sunset tracking), #1503 (probe re-render UX papercut).

[v0.50.273] — 2026-05-03

Fixed (1 PR)

• LM Studio shows in Settings → Providers when configured (#1498, partial fix for #1420; reporters @chwps and @AdoneyGalvan) — after running the onboarding wizard with LM Studio selected, users saw the provider in the model picker and could chat normally, but Settings → Providers showed no LM Studio entry or marked it as has_key=False / configurable=False even when LMSTUDIO_API_KEY was already in ~/.hermes/.env. Root cause: the _PROVIDER_ENV_VAR map in api/providers.py is missing an lmstudio: "LMSTUDIO_API_KEY" entry. That dict drives both _provider_has_key() (env-var-based key detection — falls through to has_key=False / key_source=none when the provider id isn't there) and get_providers() line 364 (configurable = pid in _PROVIDER_ENV_VAR — falls through to False, hiding the "Add API key" UI surface). Same bug shape as #1410 (Ollama Cloud / local Ollama env-var collision). Fix: add the single mapping. Unlike #1410's collision concern, LMSTUDIO_API_KEY is not shared with any other provider's runtime, so adding the mapping has no side effects. Scope discipline: issue #1420's broader thread surfaces a sibling bug — the onboarding wizard never probes the configured <base_url>/v1/models endpoint before persisting (the wizard accepts unreachable URLs silently, with no model-list dropdown population). That sibling bug is filed separately as #1499 and is not addressed by this PR — adding a probe touches the wizard UX flow, has timeout / error-handling implications, and warrants its own design pass. 5 regression tests in tests/test_issue1420_lmstudio_provider_env_var.py pin: dict literally contains the mapping, env-var path flips has_key=True + configurable=True + key_source reflects env source, config.yaml providers.lmstudio.api_key fallback also flips has_key=True, no-key path still renders configurable=True (so the user has a UI surface to add a key), and LMSTUDIO_API_KEY doesn't cross-detect any sibling provider. 4 of 5 tests verified to fail (catching the bug) when the new map entry is reverted. (api/providers.py, tests/test_issue1420_lmstudio_provider_env_var.py)

Notes

• 3874 → 3879 tests passing (+5 from the issue #1420 regression suite). 3884 collected (includes some xfail/skip markers).
• Independent review by nesquena flagged a pre-existing cross-tool env-var-name divergence: webui uses LMSTUDIO_API_KEY (the convention this PR aligns Settings detection with), while the agent CLI's runtime uses LM_API_KEY — masked in practice by the agent's LMSTUDIO_NOAUTH_PLACEHOLDER for keyless local installs. Filed as a follow-up issue (separate from #1499). Not a blocker for this PR — its scope is the UI-detection bug, and the divergence pre-dates the change.
• Single-PR release lane (no stage branch); reviewer parked at approval, ready for the merge/tag pipeline.

[v0.50.272] — 2026-05-03

Fixed (3 PRs)

• Sidebar "Stop response" cancels the row's stream, not the active pane's (#1493, by @dso2ng, closes #1466, follow-up to #1480) — second of the two verification scenarios from the #1466 thread: cancelling a running session from the sidebar context menu while viewing a different session. Pre-fix the cancel path read S.activeStreamId (the active pane's stream id) instead of the row's own active_stream_id, so cancelling session A while viewing session B either no-op'd (B not running) or cancelled the wrong stream. The new cancelSessionStream(session) helper in static/boot.js (1) hits /api/chat/cancel?stream_id=<row's id> with the row-owned stream id (URL built via new URL(...) against document.baseURI so subpath mounts work), (2) does universal cleanup on the row (session.active_stream_id=null, INFLIGHT delete, clearInflightState), and (3) does scoped cleanup gated on session-id match for active-pane sync (S.session.session_id===sid) and for clarify/approval cards (_clarifySessionId===sid / _approvalSessionId===sid with typeof !== 'undefined' guards for early page load). The sidebar context menu gains a "Stop response" entry positioned before delete, gated on session.active_stream_id so idle rows don't show the action. New stop icon (8×8 rounded square inside the standard 16×16 viewBox) plus session_stop_response / session_stop_response_desc keys in all 9 locales (// TODO: translate markers added on the 8 locales using English fallback). 3 regression tests in tests/test_1466_sidebar_cancel_clarify.py pin: stop action only on running rows + uses cancelSessionStream(session) (not the global), per-row stream id (not S.activeStreamId), per-session clarify/approval scoping. (static/boot.js, static/sessions.js, static/i18n.js, tests/test_1466_sidebar_cancel_clarify.py)

• state.db connection FD leak in sidebar polling (#1495, self-built; reported and fix-shape verified by @insecurejezza in #1494; closes #1494, addresses Bug #2 of #1458) — production WebUI on macOS launchd reproduced an HTTP-unhealthy wedge after #1483 fixed the bootstrap supervisor double-fork: process alive, port listening, every HTTP request reset by peer before a response. Investigation traced it to FD exhaustion from ~/.hermes/state.db handles (366 total FDs, 238 of them state.db / state.db-wal / state.db-shm on a wedged process). Root cause: four sqlite callsites used with sqlite3.connect(...) as conn:, but Python's sqlite3.Connection context manager only commits or rolls back on exit — it does not close the connection. /api/sessions polling calls two of these (read_importable_agent_session_rows, read_session_lineage_metadata) on every sidebar refresh, so each poll leaked one or more open state.db FDs until the process hit the macOS 256-FD soft limit, after which new connections RST'd before any handler bytes were written. Fix: wrap each sqlite3.connect(...) call in contextlib.closing(...) at: api/agent_sessions.py:read_importable_agent_session_rows, api/agent_sessions.py:read_session_lineage_metadata, api/models.py:get_cli_session_messages, api/models.py:delete_cli_session. The reporter verified the fix in production (FD count flat at 92 across a 100-request stress loop against /api/sessions and /api/projects, vs. monotonic growth pre-fix). 4 regression tests in tests/test_issue1494_state_db_fd_leak.py monkeypatch sqlite3.connect with a _TrackingConn wrapper that records .close() calls and assert every connection opened by each function is explicitly closed — verified to fail (catching the original bug) with message "leaked N of N sqlite connection(s) — context-manager-only with sqlite3.connect() does not close. Wrap in contextlib.closing()." when the closing() wrap is reverted. Scope discipline: Bug #3 from #1458 (HTTP-unhealthy wedge in the absence of FD exhaustion) remains open pending separate diagnostic data. Commit message uses Refs #1458 (Bug #2 of 3) rather than Closes #1458 so the umbrella stays open. (api/agent_sessions.py, api/models.py, tests/test_issue1494_state_db_fd_leak.py)

• P0 bugfixes bundle: tool-card args readability + CLI session rename persistence + scroll-pinning programmatic-vs-user disambiguation + sw.js relative-path regression test (#1492, by @bergeouss, closes #1469, #1484, #1486) — three concrete user-visible polish fixes plus a regression test added in response to review feedback. (1) Tool-card args (#1484, static/style.css:1700-1701): .tool-arg-key now uses display:block;margin-bottom:2px; so each key starts on its own line; .tool-arg-val swaps word-break:break-all for white-space:pre-wrap;word-break:break-word;display:block;overflow-x:auto; so newlines and indentation in tool-call arguments are preserved and wrapping happens on word boundaries instead of mid-character — a real readability win for any tool that takes multi-line code. (2) CLI session rename persistence (#1486, api/models.py:1040-1052): after a CLI session is imported (creates <sid>.json) and renamed via /api/session/rename, the JSON file's title field is updated, but the existing _project_agent_session_rows() merged the chain head's title from state.db on next refresh, silently overwriting the rename. The fix calls Session.load_metadata_only(sid) for each CLI row and prefers the WebUI JSON title when present. Covers the compression-then-rename repro from the issue. (3) Scroll-pinning programmatic-vs-user disambiguation (#1469, static/ui.js:1180-1196,1399-1410): new _programmaticScroll flag set true immediately before el.scrollTop=... in scrollIfPinned() / scrollToBottom(), cleared in next setTimeout(0) macrotask; the scroll-event listener bails on programmatic scrolls so they no longer re-pin against an explicit user scroll-up during streaming. (4) sw.js relative-path regression test (tests/test_pwa_manifest_sw.py:172-194, response to review feedback on the original 4-fix bundle): asserts static/index.html registers the service worker via the relative 'sw.js?v=' form and explicitly does NOT contain the absolute '/sw.js?v=' form, so future "absolute is cleaner" rewrites cannot silently break installs behind a reverse proxy at a subpath. The original PR's fourth fix (#1481, switching to absolute /sw.js) was a subpath-mount regression and was reverted in response to review; the regression test pins the correct shape. (static/style.css, api/models.py, static/ui.js, tests/test_pwa_manifest_sw.py)

Notes

• 3866 → 3874 tests passing (+8: #1493's 3 sidebar-cancel tests, #1495's 4 FD-leak tests, #1492's 1 sw.js relative-path regression test).
• Pre-release Opus advisor pass (initial 2-PR stage): ship-as-is, no MUST-FIX. Two non-blocking SHOULD-FIX deferred to follow-up: (1) #1493's stop-menu-after-natural-completion edge case where a freshly-arrived approval/clarify card on the same session could be wrongly hidden in a ≤5s window (mostly cosmetic); (2) #1495's delete_cli_session could switch to layered with closing(...) as conn, conn: to preserve auto-commit/rollback semantics for any future write callsites that forget explicit conn.commit().
• Two of three PRs independently approved by nesquena before stage (#1493, #1495). PR #1492 went through a full review cycle and absorbed review feedback (sw.js absolute-path change reverted, regression test added) — verified maintainer-side that the contributor's response addresses all blocking points and matches master byte-for-byte on static/index.html.
• This release closes Bug #2 of the umbrella issue #1458. Bug #1 was closed by v0.50.269 (#1483) + v0.50.270 (#1487). Bug #3 (HTTP-unhealthy without FD exhaustion) is the remaining work item.

[v0.50.271] — 2026-05-02

Changed (1 self-built PR)

• Composer voice buttons: distinct icon, distinct labels, opt-in voice mode (#1488, self-built, closes #1488) — the composer footer rendered two near-identical mic icons whose tooltips both said "Voice input": one was push-to-talk dictation (older feature), the other was turn-based hands-free voice mode (newer). After researching how ChatGPT, Claude, and Gemini handle the same problem, this PR adopts the industry convention: mic = dictation, audio-waveform = voice mode. (1) Voice-mode button now uses Lucide's audio-lines glyph (six vertical bars of varying height — the universal "two-way voice conversation" icon, also registered in LI_PATHS for reuse). (2) Distinct, localized tooltips: voice_dictate: 'Dictate' (with voice_dictate_active: 'Stop dictation' flip-state) and voice_mode_toggle: 'Voice mode' (with voice_mode_toggle_active: 'Exit voice mode' flip-state). The legacy voice_toggle key (which resolved to "Voice input" in every locale and caused the duplicate-tooltip bug) is removed. (3) Voice mode is now opt-in via Settings → Preferences → "Hands-free voice mode button" — default off keeps the composer uncluttered for the broad-majority case (plain dictation only). The dictation mic stays visible by default, unchanged. Toggle is localStorage-backed (hermes-voice-mode-button), and panels.js's onchange handler calls window._applyVoiceModePref() so the audio-waveform button appears/disappears immediately with no reload. 17 new regression tests in tests/test_issue1488_composer_voice_buttons.py pin: distinct static + i18n titles, audio-lines glyph shape (≥5 vertical-bar paths, no leftover mic-with-sparkles rect), all 4 new keys in all 9 locales, removal of stale voice_toggle, English labels match ChatGPT/Gemini convention, pref gating (no unconditional display='' left in boot.js), Settings checkbox + i18n, panels.js wiring, and active-state tooltip flips. Browser-verified end-to-end on port 8789 (default 1 mic / pref-on 2 distinct icons / live re-apply via Settings). (static/index.html, static/icons.js, static/i18n.js, static/boot.js, static/panels.js, tests/test_issue1488_composer_voice_buttons.py)

[v0.50.270] — 2026-05-02

Fixed (1 contributor PR)

• Bootstrap validates the launcher Python can import the agent (#1315, by @ccqqlo) — companion fix to v0.50.269's #1478 (which addressed the supervisor crash loop) — this PR addresses a different production failure mode. Pre-fix, ensure_python_has_webui_deps() only validated import yaml. If the discovered launcher Python had yaml but didn't have run_agent.AIAgent on its import path (a real failure mode when the WebUI's local venv is found before the agent venv), the server would start and report /health 200 OK, then 500 the first chat with a cryptic AIAgent not available error. Fix: new _python_can_run_webui_and_agent(python_exe, agent_dir) helper subprocess-imports both yaml and run_agent.AIAgent. The function now prefers the agent venv when the launcher can't import AIAgent, falls back to the local venv with pip install -r requirements.txt only if needed, and raises a clear RuntimeError pointing at HERMES_WEBUI_PYTHON if no interpreter on the system can do both. Plus 1 maintainer compatibility fix (widened 3 lambda p: p stubs in tests/test_bootstrap_foreground.py from #1478 to lambda *a, **kw: a[0] because the new function signature has 2 positional args), 1 maintainer CI fix (sidestep venv.EnvBuilder.create() in the fail-loud test by setting REPO_ROOT to tmp_path with a pre-existing fake .venv/bin/python — the prior stub only patched subprocess.run but EnvBuilder internally calls subprocess.check_output()), and 1 Opus advisor optional-followup (one-line comment at bootstrap.py:_python_can_run_webui_and_agent documenting why the PYTHONPATH prepend is load-bearing — it shadows stale run_agent packages in system site-packages). 2 regression tests in tests/test_bootstrap_python_selection.py pin (a) prefer-agent-venv when launcher can't import AIAgent, (b) loud RuntimeError when no interpreter can do both. (bootstrap.py, tests/conftest.py, tests/test_bootstrap_foreground.py, tests/test_bootstrap_python_selection.py)

Notes

• Together with #1478 (v0.50.269), this completes the Bug #1 family of bootstrap.py failure modes from issue #1458 — the supervisor-respawn loop AND the start-healthy-then-cryptic-fail mode are both now caught at boot time with clear errors.
• #1458 Bugs #2 (state.db FD leak) and #3 (HTTP-unhealthy wedge) remain open awaiting diagnostic data.
• Maintainer-applied auto-rebase + auto-fix policy: 3 commits absorbed into the contributor's branch (rebase compatibility, CI fix, optional Opus follow-up). All preserve attribution via Co-authored-by: ccqqlo trailers.

[v0.50.269] — 2026-05-02

Fixed (1 self-built + 2 contributor follow-ups)

• bootstrap.py --foreground mode for process supervisors (#1478, self-built, closes #1458 Bug #1) — the bootstrap.py double-fork pattern (subprocess.Popen([python, "server.py"], start_new_session=True) then exit 0) breaks every process supervisor. launchd / systemd / supervisord / runit / s6 see the parent exit, mark the program "completed," and respawn it — but the orphaned server still owns port 8787, so the new bootstrap fails to bind, exits non-zero, supervisor respawns again. Loop until something else crashes the orphan and the next respawn finds the port free. Reporter described this as "the agent fixes it eventually" — that's the loop intermittently succeeding. Fix: new --foreground flag (and supervisor-environment auto-detection via INVOCATION_ID / JOURNAL_STREAM / NOTIFY_SOCKET / SUPERVISOR_ENABLED / XPC_SERVICE_NAME / HERMES_WEBUI_FOREGROUND). In foreground mode, replace the bootstrap process image with server.py via os.execv so the supervisor sees the long-lived server as the original child. KeepAlive / Restart=always now work correctly. Plus 1 Opus pre-merge MUST-FIX (_is_real_supervisor_value() helper rejects macOS Terminal's noise values like XPC_SERVICE_NAME=0 and application.com.apple.Terminal.<UUID> — without this, every Mac dev running interactive ./start.sh would silently auto-promote to foreground mode, losing the /health probe and browser open) + 2 SHOULD-FIX (test env-var leakage cleanup, pre-execv os.access(python_exe, os.X_OK) guard so a non-executable launcher path raises a clear RuntimeError instead of OSError-then-respawn-loop). 44 regression tests + new docs/supervisor.md reference (runnable launchd plist + systemd .service + supervisord conf + diagnostic lsof/ppid recipe). Bugs #2 (state.db FD leak) and #3 (HTTP-unhealthy wedge) remain open under #1458 awaiting diagnostic data. (bootstrap.py, docs/supervisor.md, .gitignore, tests/test_bootstrap_foreground.py)

• /api/sessions payload missing pending_user_message (#1479, by @Thanatos-Z) — surgical 6-LOC follow-up to v0.50.267 #1473. The frontend reload/sidebar recovery filter at sessions.js:1342-1349 checks both s.active_stream_id AND s.pending_user_message to keep mid-restore sessions visible, but Session.compact() (the dict serialized into the /api/sessions payload) was missing pending_user_message. The filter only worked via the active_stream_id clause. In practice not user-visible because active_stream_id and pending_user_message are set/cleared atomically together (verified at api/routes.py:4232-4240), so any session with the latter also had the former. The fix prevents future drift if the atomicity invariant ever changes. (api/models.py, static/i18n.js, tests/test_issue856_session_streaming_state.py)

• bfcache pageshow doesn't restore active session (#1480, by @dso2ng) — when a browser restores the WebUI from bfcache (back/forward navigation), the frozen DOM is brought back without re-running boot. Sessions with active_stream_id or pending_user_message set looked stale in the active pane because the in-flight reattach logic (the v0.50.267 #1473 fix) only ran on fresh page loads. Fix: the pageshow handler now await loadSession(S.session.session_id) to refresh through the normal load path, then await checkInflightOnBoot(...) to reattach SSE. Tightened existing bfcache layout-restore tests via a shared _pageshow_handler() helper that walks the listener body via brace matching instead of the prior brittle [ps_idx:ps_idx + 1600] window. New tests/test_1466_bfcache_inflight_reattach.py. (static/boot.js, tests/test_1045_bfcache_layout_restore.py, tests/test_1466_bfcache_inflight_reattach.py)

[v0.50.268] — 2026-05-02

Fixed (contributor PR batch — 4 PRs)

• Sync URL after session id rotation (#1395, by @dso2ng) — adds calls to _setActiveSessionUrl(...) at two points in static/messages.js where a session_id rotation can land (stream completion + settled session restore), so the tab URL and localStorage['hermes-webui-session'] track the rotated id. Production-safe via typeof _setActiveSessionUrl === 'function' guard. Follow-up to #1392 which shipped in v0.50.254.
• Nest delegated child sessions under collapsed lineage roots (#1450, by @dso2ng) — when a delegated child session's parent was a hidden compression segment inside a collapsed lineage, the child fell through as a standalone Cli Session row with the wrong indentation. Now _attachChildSessionsToSidebarRows() looks up the visible collapsed lineage root and attaches child sessions there, preserving the compact lineage row while still showing children under it. (api/agent_sessions.py, api/models.py, static/sessions.js, static/style.css, tests/test_session_lineage_collapse.py, tests/test_session_lineage_metadata_api.py)
• /api/session/duplicate endpoint (#1462, by @AlexeyDsov) — new server-side endpoint creates an independent session copy with all messages, model, workspace, and per-session settings intact. Replaces the prior client-side new + rename dance which was non-atomic and could leave half-baked "(copy)" sessions if the rename call failed. Plus 5 maintainer review-feedback fixes applied directly to the contributor's branch (copy.deepcopy() for messages and tool_calls so duplicates are actually independent, explicit .save() so duplicates persist immediately, pinned/archived=False so duplicates of archived sessions are visible, status=404 for missing session, removed redundant local imports). Plus 3 Opus advisor SHOULD-FIX follow-ups: carry personality / enabled_toolsets / context_length / threshold_tokens so per-session customizations transfer; guard (session.title or "Untitled") + " (copy)" so legacy sessions with title=null don't TypeError. (api/routes.py, static/sessions.js, tests/test_session_duplicate.py, tests/test_stage268_opus_followups.py)
• Android PWA app installation (#1476, by @galvani) — adds 192px and 512px PNG icons (one with purpose: "any maskable" for adaptive icons), updates static/manifest.json, switches apple-touch-icon to PNG for iOS compatibility, and whitelists /manifest.json + /manifest.webmanifest in api/auth.py PUBLIC_PATHS so the install prompt works regardless of auth state. (api/auth.py, static/apple-touch-icon.png, static/favicon-192.png, static/favicon-512.png, static/favicon-512.svg, static/index.html, static/manifest.json)

Fixed (Opus pre-release follow-up: i18n)

• Child-count UI was hardcoded English (#1450 follow-up) — the sidebar child-count badge and meta-line both rendered ${childCount} child${childCount===1?'':'ren'} as a literal English string, breaking 8 of the 9 supported locales. Added session_meta_children arrow-function key to all 10 locale blocks (en, ja, ru, es, de, zh, zh-Hant x2, pt, ko) using locale-appropriate phrasing, and replaced both callsites in static/sessions.js with t('session_meta_children', childCount). 6 regression tests in tests/test_stage268_opus_followups.py pin the i18n key presence + the absence of hardcoded strings.

Maintainer-applied auto-rebase + auto-fix

This release is the first under the May 2 2026 auto-rebase + auto-fix policy: contributor PRs that are otherwise merge-ready but have mechanical blockers (CONFLICTING with master, small review nits) get rebased + fixed by maintainer + force-pushed back to the contributor's branch, rather than waiting for the contributor to round-trip. Two PRs in this batch followed that path:

• #1462 — 5 review-feedback fixes applied directly (deepcopy independence, persist on duplicate, reset pinned/archived, 404 status, import cleanup). Co-authored-by: Alexey Dsov trailer preserves attribution.
• #1353 (NOT in this release — deferred to v0.50.269 due to scale + durability path requiring independent review) — rebased onto master, resolved 7 conflicts across 2 files, skipped 2 commits per the contributor's own commit message intent, force-pushed back. Now MERGEABLE for the next batch.

[v0.50.267] — 2026-05-02

Fixed (contributor PR batch — 7 PRs)

• _norm_model_id strips multi-segment provider prefixes (#1454, by @happy5318) — s.split(':', 1)[1] only stripped the first colon-separated segment, leaving jingdong:GLM-5 un-normalized for @custom:jingdong:GLM-5-style IDs. Now uses s.split(':')[-1] (with a trailing-empty fallback to preserve distinct ids on malformed input). Same fix applied to the / branch. (api/config.py)
• Frontend _normalizeConfiguredModelKey matches backend (#1474, by @happy5318) — the JavaScript helper had the same one-segment-only bug as the Python helper. Mirror fix + trailing-empty fallback. Plus surface the configured-model provider name in the model dropdown badge (e.g. "Primary (jingdong)"). (static/ui.js)
• pushState instead of replaceState for chat navigation (#1461, by @JKJameson) — switching between chats wrote to the same browser-history entry, so the back button could not return to a prior chat. Now each chat-switch creates a new history entry. One-line change. (static/sessions.js)
• Session rename: ondblclick handler + loading guard (#1465, by @AlexeyDsov) — adds a native ondblclick handler as a fallback to the existing manual click-counter (which can miss double-taps when the click-delay racing setTimeout fires between pointerups), plus a guard preventing rename while the session is still loading. (static/sessions.js)
• Reuse in-flight session stream on switch-back (#1467, by @dso2ng) — attachLiveStream() now reuses the existing EventSource transport when (sessionId, streamId) match and the browser hasn't marked it CLOSED, instead of always tearing down and reopening. The server-side stream queue is not a replay log, so the close-and-reopen window dropped events that landed during the gap. 4 regression tests pin the invariants. (static/messages.js, tests/test_inflight_stream_reuse.py)
• Handle 401 redirect gracefully in loadSession flow (#1460, by @joaompfp) — when api() redirects to /login after the auth session expires (e.g. server restart), it returns undefined. Five callsites in loadSession / _ensureMessagesLoaded / _loadOlderMessages / _ensureAllMessagesLoaded / _positionModelDropdown now defensively check for undefined data and bail without state mutation. (static/sessions.js, static/ui.js)
• Batch session actions + in-flight reload recovery (#1473, by @Thanatos-Z) — fixed three regressions: (1) batch action bar rendered as an empty/global bottom bar with literal {0} placeholders because i18n placeholder substitution only ran for arrow-function values — t() now substitutes {N} placeholders at runtime for non-function values when args are passed; (2) batch project-picker dropped onto document.body orphaned itself on list re-render — now scoped to the action bar; (3) sessions with active_stream_id or pending_user_message set but message_count=0 (mid-restore from in-flight reload) were filtered out of the sidebar — filter widened. 6 regression tests. (static/boot.js, static/i18n.js, static/sessions.js, static/style.css, tests/test_session_batch_select.py)

Defensive hardening (Opus pre-release follow-up)

• _norm_model_id trailing-empty fallback — Opus advisor flagged a SHOULD-FIX edge case in #1454/#1474: malformed configured-model IDs ending in a colon or slash (@custom:foo:bar: or provider/model/) would split('...')[-1] to an empty string, collapsing distinct IDs to the same key in the configured-model badge filter. Both backend (api/config.py:1513) and frontend (static/ui.js:524) helpers now fall back to the original input when the last segment is empty (parts[-1] or s / last || s). 5 regression tests pin the guard, the clean multi-segment fix, and the frontend mirror. (api/config.py, static/ui.js, tests/test_norm_model_id_trailing_empty_guard.py)

[v0.50.266] — 2026-05-02

Fixed (i18n parity)

• Server-side _LOGIN_LOCALE missing ja/pt/ko (#1442) — the password/login page is rendered server-side BEFORE the JS i18n bundle loads, so its strings come from _LOGIN_LOCALE in api/routes.py, not static/i18n.js. The dict only contained 6 entries (en/es/de/ru/zh/zh-Hant), so users with language=ja|pt|ko set saw the English login page even after their UI language preference was saved. v0.50.264 added Japanese as the 8th built-in locale, making the gap newly visible. Fix: added ja, pt, ko entries with the same 7 sub-keys (lang/title/subtitle/placeholder/btn/invalid_pw/conn_failed) that the existing locales carry, mirroring the corresponding login_* strings from static/i18n.js. 20 regression tests in tests/test_login_locale_parity.py pin two invariants: every locale registered in LOCALES (i18n.js) must have a matching _LOGIN_LOCALE entry, and every locale's user-facing login-flow keys (13 of them) must NOT equal the English value. Adding a new locale to i18n.js without updating routes.py now trips a test. (api/routes.py, tests/test_login_locale_parity.py)
• English-leaking login-flow keys in i18n.js (#1442 audit) — while auditing the login-flow surface, found 13 keys still in English across ko (10: login_placeholder, login_btn, login_invalid_pw, login_conn_failed, sign_out_failed, password_placeholder, settings_saved_pw, settings_saved_pw_updated, auth_disabled, disable_auth_confirm_title), es (3: sign_out_failed, auth_disabled, disable_auth_confirm_title), and pt (3 missing entirely: sign_out_failed, auth_disabled, disable_auth_confirm_title). All 13 now use natural translations matching the existing locale's terminology. The wider English-leak gap across non-login translation entries is a much larger problem requiring native-speaker review and is tracked separately. (static/i18n.js)

Fixed (Safari IME composition — broader coverage)

• _isImeEnter helper not used in 6 other Safari-affected Enter guards (#1443) — PR #1441 (v0.50.264) widened the chat composer (#msg) Enter guard from e.isComposing to a 3-guard _isImeEnter(e) helper that combines e.isComposing || e.keyCode === 229 || _imeComposing for Safari's race where the committing keydown fires AFTER compositionend with isComposing=false. Six other Enter-input handlers were left on the original narrow guard: session rename, project create, project rename, app dialog (confirm/prompt), message edit, and workspace rename. Japanese/Chinese/Korean users on Safari composing into any of those would still get their IME-confirming Enter committed prematurely. Fix: exposed _isImeEnter as window._isImeEnter from static/boot.js, then replaced e.isComposing with window._isImeEnter && window._isImeEnter(e) at all 6 sites. The state-free part of the helper (isComposing || keyCode === 229) handles Safari's race for any focused input without needing per-input composition listeners or a per-input _imeComposing flag. The defensive && window._isImeEnter short-circuits if the helper isn't loaded yet (boot.js loads after sessions.js/ui.js with defer, but the keydown handlers fire on user interaction which happens after all scripts execute). 9 regression tests in tests/test_issue1443_ime_helper_promotion.py pin each of the 6 sites + verify e.isComposing Enter-guards no longer remain in sessions.js/ui.js. The existing tests/test_ime_composition.py alternation regex was extended to accept the windowed form alongside e.isComposing and bare _isImeEnter(e) — codifies the v0.50.264 reflection note about loosening pattern-shape tests when changing the shape of a guarded check. (static/boot.js, static/sessions.js, static/ui.js, tests/test_ime_composition.py, tests/test_issue1443_ime_helper_promotion.py)

Fixed (assistant-output readability)

• Glued-bold-heading lift in renderMd (#1446) — LLMs in thinking/reasoning mode frequently emit "section headers" glued to the end of the previous paragraph with no whitespace: Para 1 text.**Heading to Para 2**\n\nPara 2 text.**Heading to Para 3**. CommonMark renders that correctly as paragraph-end inline <strong>, but visually it looks like trailing emphasis on the body text rather than a section break. Reported by Cygnus (Discord, May 1 2026, "Markdown feedback 2 of 3", relayed by @AvidFuturist). Fix: added a single regex pre-pass in renderMd() that lifts the glued bold into its own paragraph: s.replace(/([.!?])\*\*([^*\n]{1,80})\*\*\n\n/g, '$1\n\n**$2**\n\n'). Constraints chosen to avoid false positives: trigger only on [.!?] IMMEDIATELY before ** (no space — almost always an LLM-glued heading, not intentional emphasis); inner text ≤80 chars; no * or newline in the inner text (single-line bold only); trailing \n\n required (preserves this is **important** to know. mid-paragraph emphasis untouched). Position: between rawPreStash restore and fence_stash restore, so fenced code blocks (still \x00P / \x00F placeholders at lift-time) are protected. Mirrored in tests/test_sprint16.py render_md() so the Python mirror stays in sync with the JS. 17 regression tests in tests/test_issue1446_glued_heading_lift.py cover all 3 trigger forms (.!?), 5 preserve-emphasis cases, chain rendering, source-level position pin, regex shape pin, and 5 node-driver tests against the actual static/ui.js for fenced/inline code protection. (static/ui.js, tests/test_sprint16.py, tests/test_issue1446_glued_heading_lift.py)
• Markdown headings visually indistinguishable from body text (#1447) — pre-fix .msg-body heading sizes were 18/16/14/13/12/11px against a 14px body, making h3 the same size as body and h4–h6 actually SMALLER than body. Reported by Cygnus (Discord, May 1 2026, "Markdown feedback 3 of 3", relayed by @AvidFuturist): "Headings seem to be missing across the board in Hermes. They're there, but all plaintext. They get lost so easily in all the plaintext." Fix: new sizes 24/20/17/15/14/13px with font-weight:700 (was 600), color:var(--strong, var(--text)), and line-height:1.3 (vs body's 1.75 for tighter heading rhythm); h1 and h2 carry a border-bottom:1px solid var(--border) for "section title" affordance (mirrors GitHub/Notion convention); h5 and h6 use text-transform:uppercase + letter-spacing:0.04em for "label-style" affordance instead of being smaller-than-body. Added margin-top:0 for the first heading of a message so opening with a heading doesn't push down with extra top margin. Companion fixes: synced .preview-md h1-h6 to match .msg-body exactly (file preview pane previously had only h1-h3 rules at 18/15/13px); updated data-font-size="small" and data-font-size="large" h1-h6 overrides to scale proportionally with the new defaults so the hierarchy is preserved at all three font-size settings. 9 regression tests in tests/test_issue1447_heading_hierarchy.py pin the size hierarchy, the bottom borders on h1/h2, the uppercase affordance on h5/h6, the .preview-md sync, and the small/large override scaling. (static/style.css, tests/test_issue1447_heading_hierarchy.py)

[v0.50.265] — 2026-05-02

Added

• Opt-in WebUI extension hooks (#1445) — adds a deliberately-small, self-hosted extension surface for administrators who want to inject local CSS/JS into the WebUI shell without forking the core repo. Disabled by default; activates only when HERMES_WEBUI_EXTENSION_DIR points to an existing directory. Three env vars expose the surface: HERMES_WEBUI_EXTENSION_DIR (filesystem root for served assets), HERMES_WEBUI_EXTENSION_SCRIPT_URLS (comma-separated same-origin script URLs to inject before </body>), HERMES_WEBUI_EXTENSION_STYLESHEET_URLS (same-origin stylesheet URLs to inject before </head>). New /extensions/... static route is auth-gated (NOT in PUBLIC_PATHS, unlike /static/...) so administrator-supplied code only runs for authenticated sessions. URL validation rejects external schemes, protocol-relative URLs, fragments, traversal (raw + percent-encoded + double-encoded), control characters, quotes, and angle brackets. Filesystem serving sandboxes paths under the configured root via Path.resolve() + relative_to(), rejects dotfiles, dot-directories, encoded backslashes, and symlink escapes. CSP unchanged — extensions live at same origin so existing 'self' directive covers them. 7 regression tests in tests/test_extension_hooks.py pin the disabled-by-default contract, URL validation against external/protocol-relative/javascript:/data:/API/encoded-traversal, HTML escaping during injection, the auth-gate vs public-static distinction, sandboxed static serving, fail-closed when disabled or unreadable, and symlink-escape rejection. Documentation in docs/EXTENSIONS.md (204 lines) covers extension authoring guidance for SPA-style additions, including avoiding destructive DOM mutations like replacing main.innerHTML. Trust model: extensions are intentionally administrator-controlled — JS injected this way runs in the WebUI origin and can call any authenticated API the logged-in browser session can. The PR explicitly does NOT introduce remote extension loading, a plugin marketplace, Python plugin execution, manifests, a browser-facing config endpoint, or new dependencies. (api/extensions.py, api/routes.py, docs/EXTENSIONS.md, tests/test_extension_hooks.py, README.md) @ryansombraio — PR #1445

Fixed (Opus pre-release advisor)

• _fully_unquote_path iteration cap raised from 3 to 10 — Opus advisor noted that quadruple-encoded .. (%2525252e%2525252e) collapsed to %2e%2e after 3 iterations and slipped through the URL-injection validator. Not exploitable in practice (downstream Path doesn't decode %2e either, so the literal directory %2e%2e won't exist) but the validator's documented contract is "URLs must point to /extensions/ or /static/," and a malformed URL that's neither cleanly that nor cleanly rejected violates the contract. Iteration cap is now 10 (URL strings stabilize in <5 iterations in practice; the cap is defensive). (api/extensions.py)
• Trust-model callout at top of docs/EXTENSIONS.md — moved the strongest trust-model warning ("extensions execute with full WebUI session authority") from the middle of the doc to a blockquote callout at the top, right after the lead paragraph. A casual operator skimming for "should I enable this?" now sees the hard truth before the friendly intro. Also adds explicit "do not point HERMES_WEBUI_EXTENSION_DIR at a user-writable directory" guidance. (docs/EXTENSIONS.md)
• URL list cap (32 entries) + reject-URL logging — caps configured URL lists at 32 entries to avoid pathological page rendering when a misconfigured env var ships thousands of URLs. Also logs a one-shot warning per process for each rejected URL (e.g. when an admin typos https://... and the validator drops it as external) so the silent-failure mode of "extension just doesn't load" produces a log signal an admin can find. (api/extensions.py)
• MIME map expansion — adds ttf (font/ttf), otf (font/otf), and wasm (application/wasm) to the served-MIME table. .wasm specifically would fail to instantiate in Chrome served as text/plain; the others are ergonomic for older font formats. (api/extensions.py)
• 5 regression tests in tests/test_pr1445_opus_followups.py pin the new invariants: quadruple-encoded .. collapses correctly, the same URL is now rejected by the validator, URL list caps at the configured max with a warning log, rejected URLs log exactly once per process, and the expanded MIME map serves .ttf/.otf/.wasm with the correct Content-Type without charset suffixes for binary types. (tests/test_pr1445_opus_followups.py)

[v0.50.264] — 2026-05-02

Added

• Japanese (ja) locale (#1439) — adds ja as the 8th built-in UI locale, slotted between en and ru in static/i18n.js. 825 keys translated to natural, concise Japanese (kanji + hiragana + katakana mix; technical terms in their commonly-used Japanese form: Cronジョブ, MCPサーバー, APIキー, トークン). Translation style prefers terse 体言止め over polite forms (保存, キャンセル, 削除) to match the brevity of the English originals. All ${var} and {0}-style placeholders preserved verbatim, all 26 arrow-function values mirrored with parameter names intact. Settings → Language now lists 日本語; the existing Object.entries(LOCALES) discovery path picks it up automatically. The fallback chain (_locale[key] ?? LOCALES.en[key]) means any future English-only string still renders cleanly. 8 regression tests in tests/test_japanese_locale.py pin block existence, representative translations, full key-set parity with English (zero missing, zero extra), the 8 known en-duplicates mirrored exactly, placeholder preservation, arrow-function value mirroring, and _label: '日本語' using actual Japanese script. (static/i18n.js, tests/test_japanese_locale.py) @snuffxxx — PR #1439

Fixed (Opus pre-release advisor)

• IME composition flag could get stuck if compositionend never fires — Opus advisor caught a recoverable footgun in PR #1441's manual _imeComposing flag: if the user loses focus mid-composition (window blur / IME implementation quirk on older Safari WebKit), compositionend may never fire, leaving _imeComposing=true until the next composition starts AND ends. Result: Enter-to-send is silently broken until page reload. Added a blur listener on #msg that also resets the flag — cheap belt-and-suspenders against the unrecoverable stuck state. (static/boot.js, tests/test_pr1441_ime_safari_guard.py)

Fixed

• IME composition Enter sent message prematurely on Safari (#1441) — the #msg keydown handler had an e.isComposing guard that swallows IME-confirming Enter on Chrome and Firefox (where the committing keydown fires before compositionend), but failed on Safari (where the committing keydown fires AFTER compositionend with isComposing=false). Result: Japanese/Chinese/Korean users on macOS Safari + Hermes had to copy/paste from another app because every IME-confirming Enter sent the message instead of just accepting the conversion. Fix: widened guard from e.isComposing to a _isImeEnter(e) helper that also checks e.keyCode === 229 (IME virtual key on broader browser/IME combos) AND a manual _imeComposing flag set on compositionstart and reset in a setTimeout(…, 0) after compositionend (so the trailing keydown still sees _imeComposing=true). Helper is used in both the autocomplete-dropdown Enter path and the send-Enter path. The composition-listener IIFE null-guards $('msg') so login/onboarding pages without a composer don't throw. No behavior change for non-IME users — all three guards return falsy for normal Enter. 6 regression tests in tests/test_pr1441_ime_safari_guard.py pin: helper definition + all 3 guards, compositionstart sets the flag, compositionend defers reset to next tick, blur resets to recover from missed compositionend (Opus follow-up), IIFE null-guards $('msg'), both Enter paths use the helper. Existing test_ime_composition.py::test_boot_chat_enter_send_respects_ime_composition was loosened to accept either e.isComposing OR _isImeEnter(e). (static/boot.js, tests/test_ime_composition.py, tests/test_pr1441_ime_safari_guard.py) @ryan-remeo — PR #1441

• Markdown renderer: triple backticks mid-line corrupted downstream rendering (#1438) — The fence regex /```([\s\S]*?)```/g had no line anchoring. A literal triple backtick appearing inside a code block's content (e.g. a regex pattern with ``` in a lookbehind, a script that documents fences, embedded markdown-in-markdown) terminated the outer fence at the wrong place. The leaked tail then went through bold/italic/inline-code passes, eating * characters as italic markers and producing literal </strong> tags in the rendered output. Reported by Cygnus (Discord, May 1 2026), relayed by @AvidFuturist.

  Fix: anchor all 3 fence regexes per CommonMark §4.5 — opening fence must start a line (with up to 3 spaces of indent), closing fence must also start a line. Pattern: (^|\n)[ ]{0,3}\``(?:([\s\S]*?)\n)?[ ]{0,3}```(?=\n|$). The (?:...\n)?` group keeps empty fences (```\n```) working. Patched sites:

  • static/ui.js:1559 — renderMd() fenced-block stash (the assistant-message renderer)
  • static/ui.js:66 — _renderUserFencedBlocks() (user-message renderer)
  • static/ui.js:2599 — _stripForTTS() (TTS speech pre-strip)

  Plus the Python mirror in tests/test_sprint16.py. Triple backticks in the middle of a line are now treated as literal text (CommonMark-conformant) and no longer break out of code blocks. 20 regression tests in tests/test_issue1438_fence_anchoring.py cover Cygnus's exact repro, inline ``` in paragraphs, partial/streaming fences, empty fences, indented fences (3-space ✓, 4-space ✗), language tags, two adjacent blocks, and source-level guards on all 3 patched sites.

[v0.50.263] — 2026-05-02

Fixed

• Context-window indicator broken on older sessions ("100" / "890% used") (#1436, fixes #1436) — #1356 (closed Apr 30) fixed the same symptom on the live SSE path but didn't cover the GET /api/session load path, so any session that pre-dates #1318 (when context_length was added to Session) returned context_length=0 from /api/session. Combined with two cascading frontend fallbacks (promptTok = last_prompt_tokens || input_tokens, ctxWindow = context_length || 128*1024), the ring rendered "100" capped from 800-4000% and the tooltip showed "890% used (context exceeded), 1.2M / 131.1k tokens used" — a misleading prompt to compress that the user couldn't address. Empirically: 23 of 75 sessions on the dev server were broken before this fix. Two-layer fix: (1) backend api/routes.py now resolves context_length via agent.model_metadata.get_model_context_length() when the persisted value is 0, mirroring the SSE-path fallback in api/streaming.py:2333-2342. (2) frontend static/ui.js:1269 no longer falls back to cumulative input_tokens when last_prompt_tokens is missing — that fallback divides cumulative input by the context window, producing nonsense percentages. Older sessions without last-prompt data now render "·" + "tokens used" (honest no-data) on the ring instead of a misleading >100% percentage. 10 regression tests in tests/test_issue1436_context_indicator_load_path.py pin: persisted-value pass-through, zero-value fallback, fallback-receives-correct-model, empty-model-skips-fallback (avoids 256K default-for-unknown trap), exception-swallowed-on-import-failure, frontend-no-input_tokens-fallback, frontend-uses-last_prompt_tokens-only, no-data-branch-renders-dot, load-path-imports-the-helper, fix-comment-references-issue-number. Reported by @AvidFuturist. (api/routes.py, static/ui.js, tests/test_issue1436_context_indicator_load_path.py)

[v0.50.262] — 2026-05-02

Fixed

• New-chat button (+) and Cmd/Ctrl+K were no-ops while the first message was streaming (#1432, closes #1432) — the empty-session guard from #1171 (message_count===0 → focus composer instead of creating a new session) didn't account for in-flight streams, where the user's message hasn't been merged into s.messages server-side yet. Clicking + during the first response of a brand-new session was silently dropped, so users couldn't actually start a parallel conversation. The guard now also requires !S.busy && !S.session.active_stream_id && !S.session.pending_user_message — the same in-flight signal already used by _restoreSettledSession() in messages.js:1081. Reported by @Olyno. (static/boot.js)
• Profile-name field auto-capitalized typed values despite the "lowercase only" hint (#1423, closes #1423) — the input had autocomplete="off" but was missing autocapitalize="none", autocorrect="off", and spellcheck="false", so mobile keyboards (iOS Safari/WKWebView, Android Chrome) silently capitalized the first letter and desktop spellcheck could rewrite the value on blur. The form lowercases on submit, so stored data was always correct — the bug was a misleading display during typing. Same attributes added to the Base URL field for the same reason (URLs are not natural-language text). The API key field is type="password" and already has correct browser behavior. (static/panels.js)

[v0.50.261] — 2026-05-02

Changed

• Composer footer: session-toolsets chip is now responsive — the per-session toolsets restriction chip (introduced in #493) was crowding the composer footer on standard widths once it shared space with model, reasoning, profile, workspace, context-ring, and send. The PR #1433 fix hid it unconditionally via JS; this release replaces that with a responsive CSS rule so the chip is visible only when the composer-footer container is at least 1100px wide (i.e. wide desktops with the workspace panel closed). At narrower widths the chip is hidden by the base CSS rule, and the existing @container composer-footer (max-width: 520px) and @media (max-width: 640px) rules continue to enforce hidden on tablets and phones. JS no longer sets display:none directly — visibility is controlled entirely by CSS so the responsive cascade is the single source of truth. The underlying state and /api/session/toolsets endpoint continue to work for cron and scripted callers regardless of UI visibility. Inline style="display:none" removed from index.html so the CSS base rule is the only source of the default-hidden state. Refs #1431, #1433. @nesquena-hermes (static/ui.js, static/style.css, static/index.html)

Fixed (Opus pre-release advisor)

• Toolsets dropdown stays open after resize crosses 1100px threshold — Opus advisor caught a latent bug promoted by the new responsive cascade. The composerToolsetsDropdown is a DOM sibling of composerToolsetsWrap, not a child, so CSS hiding the wrap does NOT cascade-hide an open dropdown. If a user opened the dropdown at composer-footer ≥ 1100px and then opened the workspace panel (or resized the window), the dropdown would stay open without a visible anchor and the resize handler would re-anchor it to the footer's left edge with no chip in sight. The bug existed pre-stage-261 at the 520/640 thresholds but those fire rarely; the new 1100px threshold is reachable with a single workspace-panel toggle. Three fixes: (1) resize listener now closes the dropdown (instead of repositioning it) when chip.offsetParent === null. (2) _positionToolsetsDropdown() now early-returns + closes when chip is hidden — defense-in-depth. (3) toggleToolsetsDropdown() early-returns when chip is hidden — currently latent (only the chip's own onclick invokes it) but defensive against future #1431 redesign code. (static/ui.js)
• display:flex → display:block on the wrap — Opus advisor noted that sibling wraps (.composer-profile-wrap, .composer-model-wrap, .composer-reasoning-wrap) all use the natural block display, while display:flex would blockify the chip's inline-flex layout. Changed for consistency. (static/style.css)
• 13 regression tests in tests/test_issue1431_toolsets_chip_responsive.py pin: the base hide rule, the wide-container reveal rule (block or flex), the narrow-container hide rule (520px container), the mobile viewport hide rule (640px @media), the JS-doesn't-force-display-none invariant, the JS-clears-inline-style invariant, the state-tracking-still-works invariant, the no-inline-display-none-in-html invariant, the /api/session/toolsets endpoint preservation, the dropdown-machinery preservation (toggleToolsetsDropdown, _populateToolsetsDropdown), AND the three Opus-found resize-guard invariants (resize handler closes dropdown when chip hidden, _positionToolsetsDropdown defense-in-depth, toggleToolsetsDropdown defense-in-depth). (tests/test_issue1431_toolsets_chip_responsive.py)

[v0.50.260] — 2026-05-01

Fixed

• Docker compose UID/GID alignment (#1428, fixes #1399) — the two- and three-container compose files had a UID mismatch between containers sharing the hermes-home volume: hermes-agent and hermes-dashboard ran as UID 10000 (image default) while hermes-webui ran as UID 1000 (WANTED_UID default), causing Permission denied errors on every shared file. All services now read from ${UID:-1000} and ${GID:-1000} so they align by construction. Empirically tested on both two- and three-container setups by the contributor. (docker-compose.two-container.yml, docker-compose.three-container.yml) @sunnysktsang — PR #1428

Changed

• Docker UX overhaul — Docker reliability has been a recurring pain point. This release ships a coordinated set of doc/config improvements:
  • All 3 compose files now document the HERMES_SKIP_CHMOD and HERMES_HOME_MODE escape hatches inline (the v0.50.254 fix for #1389 wasn't surfaced for Docker users).
  • New .env.docker.example template specifically for Docker users, covering UID/GID, paths, password, and permission-handling escape hatches with explicit UID=1000/GID=1000 placeholders so macOS users don't skim past the warning.
  • New docs/docker.md — comprehensive guide covering all 3 compose files, common failure modes (with one-line fixes), bind-mount migration recipe, multi-container architecture diagram, macOS Docker Desktop file-sharing implementation note, and pointer to the community all-in-one image for Podman 3.4 / multi-arch users.
  • README Docker section rewritten — clearer 5-minute quickstart pointing at the single-container setup; failure-mode table with one-line fixes; pointer to docs/docker.md for the deep dive; stale /root/.hermes reference removed (the agent images use /home/hermes/.hermes).
  • 12 regression tests in tests/test_v050260_docker_invariants.py — UID/GID alignment positive + negative-pattern guards, escape-hatch documentation, .env.docker.example shape, docs/docker.md failure-mode coverage, README link integrity, and YAML validity for all 3 compose files. (docker-compose.yml, docker-compose.two-container.yml, docker-compose.three-container.yml, .env.docker.example, docs/docker.md, README.md, tests/test_v050260_docker_invariants.py)

Changed (Opus pre-release advisor)

• HERMES_HOME_MODE semantic asymmetry warning — Opus advisor caught a footgun in my initial draft: HERMES_HOME_MODE means different things in the WebUI vs. the agent image. WebUI's HERMES_HOME_MODE is a credential-FILE mode threshold (e.g. 0640 allows group bits on .env), but the agent's HERMES_HOME_MODE is the HERMES_HOME directory mode (default 0700). 0640 on a directory has no owner-execute bit, so the agent can't traverse its own home directory and bricks. My initial draft recommended HERMES_HOME_MODE=0640 as the example value in agent service blocks — corrected to 0750 (group-traversable) for multi-container setups. All three surfaces now match: compose files (per-service comments), .env.docker.example (multi-container warning section), docs/docker.md (failure mode #2 callout). 3 new regression tests pin the asymmetry: test_agent_service_does_not_recommend_invalid_home_mode, test_compose_files_warn_about_home_mode_asymmetry, test_env_docker_example_warns_about_home_mode_asymmetry. (docker-compose.two-container.yml, docker-compose.three-container.yml, .env.docker.example, docs/docker.md, tests/test_v050260_docker_invariants.py)

[v0.50.259] — 2026-05-01

Fixed

• SessionDB WAL handle leak — close before replacing on cached agent — _run_agent_streaming created a new SessionDB instance per request and replaced the cached agent's _session_db reference without closing the old one. Each SessionDB.__init__ opens a SQLite connection that holds 3 file descriptors once WAL kicks in (state.db, state.db-wal, state.db-shm). After ~73 messages on a long-lived agent (the empirically-confirmed crash count from the bug report), leaked FDs exhausted the 256 default limit causing EMFILE crashes. Fix wraps the swap with an explicit agent._session_db.close() (idempotent + thread-safe via SessionDB's internal _lock + if self._conn: guard). (api/streaming.py) @wali-reheman — PR #1421

Changed (Opus pre-release advisor)

• Same FD-leak fix applied to LRU eviction path — SESSION_AGENT_CACHE.popitem(last=False) was dropping the evicted agent on the floor with evicted_sid, _ = .... The agent's _session_db would only release its FDs when GC eventually finalized the agent — which on a long-running server may be never. Now captures the evicted entry, calls _evicted_agent._session_db.close() explicitly. Same shape as #1421's fix on the cached-agent reuse path. 5 regression tests in test_v050259_sessiondb_fd_leak.py cover both paths plus SessionDB.close() idempotency. (api/streaming.py, tests/test_v050259_sessiondb_fd_leak.py)

[v0.50.258] — 2026-05-01

Fixed

• Login stability: 30-day session TTL, redirect-back, connectivity probe — three independent fixes for users on flaky networks (VPN, Tailscale). (1) SESSION_TTL extended from 24 hours to 30 days in api/auth.py so users no longer get kicked out daily. (2) When a session expires and the user is redirected to /login, the server now passes ?next=<original-path> so _safeNextPath() in static/login.js redirects them back after a successful login instead of dumping them on the login screen. (3) Login page now probes /health on load (a public endpoint) and distinguishes "session expired / wrong password" from "can't reach server" — when the server is unreachable, shows a clear "Cannot reach server — check your VPN / Tailscale connection." message, disables the form, retries every 3 seconds, and auto-reloads the page once the server becomes reachable again. (api/auth.py, static/login.js) @bsgdigital — PR #1419

Changed (Opus pre-release advisor)

• Login redirect URL encoding fix — multi-param queries no longer truncated — the original PR #1419 implementation built the outer ?next= parameter via quote(path, safe='/:@!$&\'()*+,;=') which kept ? and & literal. Two problems: (a) paths with multi-param queries (e.g. /api/sessions?limit=50&offset=0) round-tripped as /api/sessions?limit=50 because the inner & terminated the outer next value, (b) attacker-controlled paths with embedded &next=... injected a second top-level next parameter (browsers parse first-match, Python parse_qs parses last-match — parser-divergence footgun even though _safeNextPath() rejects the actual exploit). Fix encodes the entire path?query blob with safe='/' so ?, &, = all percent-encode. The outer next then holds exactly one path-with-query string. 6 regression tests in test_v050258_opus_followups.py pin the round-trip behavior across simple paths, single-query paths, multi-param queries, and attacker-injection neutralization. (api/auth.py, tests/test_v050258_opus_followups.py)

[v0.50.257] — 2026-05-01

Added

• Cron run history + full-output viewer (#468) — new GET /api/crons/history?job_id=X&offset=N&limit=M endpoint lists all output files for a job (filename + size + mtime) without loading content. New GET /api/crons/run?job_id=X&filename=Y returns full content + a snippet extracted from the ## Response section. Tasks panel renders a per-job run history with click-to-expand. (api/routes.py, static/panels.js, static/i18n.js) @bergeouss — PR #1402, fixes #468

• Per-session toolset overrides (#493) — new Session.enabled_toolsets: list[str] | None field threaded through _run_agent_streaming. New POST /api/session/toolsets endpoint validates input shape (non-empty list of non-empty strings, or null to clear). Settings panel adds a per-session toolset chip with global/custom modes. Honors the override at the streaming hot path via _resolve_cli_toolsets. (api/models.py, api/routes.py, api/streaming.py, static/panels.js, static/i18n.js, static/index.html, static/style.css, static/ui.js) @bergeouss — PR #1402, fixes #493

• Codex OAuth in-app device-code flow — new api/oauth.py (stdlib only — no external HTTP libs). Two endpoints: GET /api/oauth/codex/start (initiates Codex device-code flow, returns user_code + verification_uri) and GET /api/oauth/codex/poll?device_code=X (SSE for polling token endpoint). Successful poll writes credentials to ~/.hermes/auth.json under credential_pool.openai-codex. Onboarding wizard adds a "Sign in with ChatGPT" path. Idempotent: existing OAuth credential entries are updated in place; new ones use uuid.uuid4().hex[:8] with retry-on-collision (3 attempts). (api/oauth.py, api/routes.py, static/onboarding.js, static/i18n.js, static/index.html, static/style.css) @bergeouss — PR #1402

Fixed

• Named custom provider routing in model picker — @custom:NAME:model form preserved (#557 follow-up to #1390) — when the model picker iterated custom_providers entries with a name field (e.g. [{name: "sub2api", base_url, models: [...]}]), the option IDs were stored as bare model strings. On chat start, the backend resolved those bare strings through the active/default provider, silently routing the request to the wrong endpoint (e.g. DeepSeek instead of the user's selected sub2api proxy). Now the picker prefixes IDs with @<slug>:<model> whenever the active provider differs from the named slug, so _resolve_compatible_session_model_state (added by #1390) routes through the correct named provider. The frontend _findModelInDropdown already strips @provider: prefixes during normalization, so legacy localStorage["hermes-webui-model"] values with bare IDs continue to resolve. 5 new tests across test_issue1106_custom_providers_models.py, test_provider_mismatch.py, test_security_redaction.py. (api/config.py) @Thanatos-Z — PR #1415

Changed (Opus pre-release advisor)

• api/oauth.py::_write_auth_json chmod 0600 BEFORE rename — tmp.replace() preserves the temp file's umask-derived mode (commonly 0644 or 0664). auth.json contains OAuth access/refresh tokens; on shared systems those tokens landed world-readable through the temp-file→rename window. Fix sets tmp.chmod(0o600) before the atomic rename, with a try/except OSError that logs but doesn't abort if chmod fails on filesystems that don't support POSIX modes. The api.startup::fix_credential_permissions sweep also catches this on next process start as belt-and-suspenders. (api/oauth.py, tests/test_v050257_opus_followups.py)

• _handle_cron_history and _handle_cron_run_detail regex-validate job_id — the _checkpoint_root() / ws_hash / checkpoint path-traversal vector caught in v0.50.255 (#1405) had a sibling here: CRON_OUT / job_id / *.md. Path() / "../escape" does NOT normalize. While _handle_cron_run_detail had a downstream is_relative_to(CRON_OUT.resolve()) check, _handle_cron_history didn't. New regex ^[A-Za-z0-9_-][A-Za-z0-9_.-]{0,63}$ with explicit ./.. rejection at the parameter boundary. Mirrors the rollback fix shape. (api/routes.py, tests/test_v050257_opus_followups.py)

• _handle_cron_history clamps offset and limit — raw int(qs.get("offset", ["0"])[0]) raised ValueError on ?offset=foo and surfaced as a generic 500. No upper bound on limit either. Now wrapped in try/except (ValueError, TypeError) returning a 400 on bad input, and limit clamped to [1, 500]. (api/routes.py)

• CRITICAL: per-session toolset override (#493) was non-functional — _run_agent_streaming called _session_meta.get('enabled_toolsets') on the result of Session.load_metadata_only(), which returns a Session instance (not a dict). The AttributeError was swallowed by the surrounding except Exception: block, so the user's toolset chip silently no-op'd every time and the agent always ran with the global toolsets. Caught by Opus pre-release advisor on the empirical streaming path (CI green, contributor tests green — would have shipped non-functional). Fix uses getattr(_session_meta, 'enabled_toolsets', None). Source-level negative-pattern test prevents the dict-access shape from returning. (api/streaming.py, tests/test_v050257_opus_followups.py)

[v0.50.256] — 2026-05-01

Fixed

• TTS speaker icon and four other Lucide icons rendered invisibly (#1413, closes #1413) — static/icons.js::LI_PATHS was missing five icon names that static/*.js calls li('NAME', ...) with. The li() helper logs console.warn('li(): unknown icon NAME') and returns an empty string when the name isn't registered, so the host element renders with display:flex and a click handler but no glyph. Five missing entries added: (1) volume-2 — TTS speaker button on every assistant message (ui.js:3376); regression from #499, surfaced after #1411 (v0.50.255) fixed the CSS specificity collision and made the empty button visible-but-empty. Reported by @AvidFuturist via Telegram. (2) chevron-up — queue pill chevron (ui.js:2178); had a ▲ ASCII fallback but only when li itself was undefined, not when it returned ''. (3) hash, (4) cpu, (5) dollar-sign — Insights panel stat cards (panels.js:883-885); fresh regression from #1405 (v0.50.255). New regression test test_issue1413_li_path_coverage.py walks every li('NAME', ...) call across static/*.js and asserts each NAME is registered in LI_PATHS — guards the entire class of bug, not just the five fixed here. (static/icons.js, tests/test_issue1413_li_path_coverage.py) — fixes #1413, reported by @AvidFuturist via Telegram

[v0.50.255] — 2026-05-01

Added

• Insights panel — usage analytics dashboard (#464) — new GET /api/insights?days=N endpoint walks _index.json (no full session loads) and aggregates session/message/token counts, model breakdown, and activity-by-day-of-week + activity-by-hour. New nav rail entry between Todos and Settings; the panel renders stats cards, a token breakdown row, and ASCII-style horizontal-bar charts. Period filter (7/30/90 days). (api/routes.py, static/panels.js, static/index.html, static/i18n.js, static/style.css) @bergeouss — PR #1405, fixes #464

• Rollback UI — restore from agent checkpoints (#466) — new api/rollback.py exposes 3 endpoints (GET /api/rollback/list, GET /api/rollback/diff, POST /api/rollback/restore) over the agent's CheckpointManager shadow git repos at {hermes_home}/checkpoints/<sha256-of-canonical-workspace>/<commit_hash>/.git. Workspace is allowlisted via load_workspaces() (added during contributor security pass d9f3a69). _validate_checkpoint_id() regex-guards the checkpoint parameter against path-traversal (Opus pre-release advisor finding — Path() does NOT normalize ..). Restore copies files via shutil.copy2 and never deletes; diff uses difflib.unified_diff. (api/rollback.py, api/routes.py) @bergeouss — PR #1405, fixes #466

• Turn-based voice mode — STT + TTS chained flow — new voice-mode button in the composer; activating it puts the agent in a listen → send → think → speak → listen loop. Uses the browser's Web Speech API (gated on both SpeechRecognition AND speechSynthesis support). Auto-send on 1.8s silence after a final transcript. Honors saved voice preferences (hermes-tts-voice, hermes-tts-rate, hermes-tts-pitch). Bails out on not-allowed / service-not-allowed / audio-capture errors. Pre-release fix: the patched autoReadLastAssistant fired globally — if the user navigated to a different session between send and stream completion, TTS would speak the wrong session's reply. Now captures S.session.session_id at thinking-time and bails to listening if the active session changed. (Opus pre-release advisor.) (static/boot.js, static/i18n.js, static/index.html, static/style.css) @bergeouss — PR #1405

• API redact toggle — opt out of response-layer redaction — adds api_redact_enabled setting (defaults to True so existing users see no behavioral change). When disabled, redact_session_data() returns payloads as-is. Useful for users who pipe the WebUI API into automation that needs the original strings. (api/helpers.py, api/config.py, static/panels.js, static/i18n.js) @bergeouss — PR #1405

• Subagent tree visualization — UI affordance for sessions that spawn subagents. (static/panels.js, static/sessions.js, static/style.css, static/i18n.js) @bergeouss — PR #1405

Fixed

• Session provider context preserved across model picker → runtime resolution (#1240) — the WebUI model picker can show multiple providers exposing the same bare model id (e.g. gpt-5.5 from OpenAI Codex, OpenRouter, Copilot). Previously sessions persisted only the bare model, so a session selected as "gpt-5.5 from OpenAI Codex" silently rerouted through whatever provider became default after a config change. New model_provider: str | None field on Session is persisted in metadata, threaded through every chat path (/api/session/new, /api/session/update, /api/chat/start, /api/chat/sync, /btw, /background, _run_agent_streaming), and is gated in compact() to emit only when truthy (matches v0.50.251 lineage end_reason gating). New model_with_provider_context(model_id, model_provider) in api/config.py builds the @provider:model form when provider differs from configured default, then passes through resolve_model_provider(). New _should_attach_codex_provider_context() narrow exception detects bare GPT-* models under active OpenAI Codex (because Codex/OpenRouter/Copilot expose overlapping GPT names). New _resolve_compatible_session_model_state() returns (effective_model, effective_provider, model_was_normalized). Frontend adds MODEL_STATE_KEY='hermes-webui-model-state' localStorage with structured persistence and migrates from the legacy hermes-webui-model key. 13 new tests in test_provider_mismatch.py, 2 in test_model_picker_badges.py. (api/config.py, api/models.py, api/routes.py, api/streaming.py, static/boot.js, static/messages.js, static/panels.js, static/sessions.js, static/ui.js) @starship-s — PR #1390, refs #1240

• TTS toggle: speaker icon never appeared when "Text-to-Speech for responses" was ticked (#1409, closes #1409) — _applyTtsEnabled() set btn.style.display=enabled?'':'none' on every .msg-tts-btn. The '' branch removes the inline override, after which the .msg-tts-btn{display:none;} rule from style.css re-hides the button. Both the "enabled" and "disabled" branches left the icon hidden, so the toggle had no visible effect since the feature shipped in #499. Fixed by switching to a body-class toggle (body.tts-enabled) plus a compound CSS selector (body.tts-enabled .msg-tts-btn{display:inline-flex;}). The new shape bypasses the .msg-action-btn / .msg-tts-btn cascade collision and survives subsequent renderMd() re-renders without re-querying every button. (static/panels.js, static/style.css, tests/test_499_tts_playback.py) — PR #1411, fixes #1409, reported by @AvidFuturist via Discord

• Ollama (local) no longer falsely reports "API key configured" when only Ollama Cloud key is set (#1410, closes #1410) — both providers were mapped to the same OLLAMA_API_KEY env var in _PROVIDER_ENV_VAR, so configuring Ollama Cloud lit up the local Ollama card too. The runtime in hermes_cli/runtime_provider.py only consumes OLLAMA_API_KEY when the base URL hostname is ollama.com — local Ollama is keyless by design — so the WebUI was reporting "configured" for a key local Ollama doesn't even read. Dropped the bare "ollama": "OLLAMA_API_KEY" mapping; local Ollama users who genuinely need a key can still set providers.ollama.api_key in config.yaml, and _provider_has_key() continues to honor that path. (api/providers.py, tests/test_provider_management.py) — PR #1411, fixes #1410, reported by @AvidFuturist via Discord

Changed

• api/rollback.py — checkpoint id regex validation (defense-in-depth) — Opus pre-release follow-up. The checkpoint parameter on /api/rollback/diff and /api/rollback/restore was joined into the path via _checkpoint_root() / ws_hash / checkpoint. Path("/a/b") / "../escape" does NOT normalize, so an authenticated caller could pass ../<other-ws-hash>/<sha> and read or restore from another allowlisted workspace's checkpoint store. New _validate_checkpoint_id() regex-guards with ^[A-Za-z0-9_-][A-Za-z0-9_.-]{0,63}$ and rejects literal . / ... (api/rollback.py)

• redact_session_data() reads api_redact_enabled once per response, not per string — Opus pre-release follow-up. The new _redact_text per-string load_settings() call (added by #1405's redact-toggle feature) caused hundreds of disk reads + JSON parses per /api/session?session_id=X response on a 50-message session — every nested string in messages[] and tool_calls[] recursed back into _redact_value → _redact_text → load_settings. Now read once at the top of redact_session_data() and threaded through via a private _enabled keyword. Fast path when disabled: still walks but returns immediately. (api/helpers.py, tests/test_v050255_opus_followups.py)

• Voice mode pins active session id at thinking-time — Opus pre-release follow-up. The patched autoReadLastAssistant fires globally; if the user navigated to a different session between sending a turn and stream completion, TTS would speak the wrong session's last assistant message. New _voiceModeThinkingSid closure variable captures S.session.session_id in _voiceModeSend; _speakResponse bails to _startListening() if the current sid no longer matches. (static/boot.js, tests/test_v050255_opus_followups.py)

• api/rollback.py::_inspect_checkpoint drops bare Exception from except tuple — Opus pre-release follow-up. The previous except (subprocess.TimeoutExpired, OSError, Exception) made the specific catches redundant and swallowed everything. Now (subprocess.TimeoutExpired, OSError) only. (api/rollback.py, tests/test_v050255_opus_followups.py)

[v0.50.254] — 2026-05-01

Fixed

• API 500 regression on /api/sessions, /api/memory: _combined_redact TypeError (#1394, closes #1394) — PR #1387 follow-up fc88981 started passing force=True to redact_sensitive_text(), but older hermes-agent builds don't accept the force kwarg. Every redaction call on the hot path crashed with TypeError, degrading the entire API to 500 errors. _combined_redact now wraps the call in try/except TypeError and falls back to the no-kwarg call. The local fallback (ghp_/sk-/hf_/AKIA) still runs unconditionally, so coverage doesn't regress. (api/helpers.py) @bergeouss — PR #1400, fixes #1394

• Code block tree-view: newlines stripped from data-raw, jsyaml retry loop missing (#1397, closes #1397) — Two bugs in the JSON/YAML tree-view renderer. (1) Browsers normalize newlines to spaces inside HTML attribute values (HTML spec); the data-raw attribute on .code-tree-wrap lost every newline, so multi-line YAML/JSON came out as single-line tree views. Fixed by encoding \n as 
 before writing the attribute. (2) When jsyaml hadn't loaded yet, initTreeViews() set data-tree-init=1 immediately and bailed — the lazy-load callback never re-invoked init, leaving the block in raw view forever. Fixed by removing data-tree-init and calling _loadJsyamlThen(initTreeViews) to retry after load. (static/ui.js) @bergeouss — PR #1400, fixes #1397

• Credential permission fixer respects HERMES_HOME_MODE and HERMES_SKIP_CHMOD (#1389, closes #1389) — fix_credential_permissions() was unconditionally forcing 0600 on every credential file in HERMES_HOME at startup. Docker setups that intentionally use group bits (e.g. HERMES_HOME_MODE=0640 for shared volumes) had their declared mode silently overridden. Now HERMES_SKIP_CHMOD=1 bypasses the fixer entirely; when HERMES_HOME_MODE is set, the fixer only strips world bits (0o007) and preserves operator-declared group access. (api/startup.py) @bergeouss — PR #1400, fixes #1389

• Sidebar session click is now instant on mouse, drag-aware on touch (#1398) — clicking a chat in the sidebar previously had a 300ms delay on every device to disambiguate single-tap from double-tap-rename. Mouse users perceived this as lag. Now the delay is 0 for pointerType==='mouse' and stays 300ms for touch (where it's needed for tap-vs-drag disambiguation). Adds pointermove drag detection: movement >5px from pointerdown marks the gesture as a drag, cancels the pending tap timer, suppresses hover highlighting via a .dragging class, and clears 50ms after release so the row doesn't flash hover mid-scroll. (static/sessions.js, static/style.css) @JKJameson — PR #1398

• Per-tab session URL anchors via /session/<id> (#1392) — replaces the cross-tab localStorage['hermes-webui-session'] active-session bus with per-tab URL ownership. Each tab anchors its active conversation in the path (/session/<id>), so two tabs viewing different sessions can no longer yank each other around when localStorage changes. The <base href> script in static/index.html stops at the /session/ marker so subpath mounts (/myapp/session/<id>) still resolve assets correctly; all new URL('api/...', location.href) calls migrated to document.baseURI||location.href for the same reason. New helpers _sessionIdFromLocation(), _sessionUrlForSid(), _setActiveSessionUrl() in sessions.js. Lineage-aware active highlighting (_sessionLineageContainsSession) keeps a forked session highlighted even when collapsed inside a parent lineage row. The popstate handler navigates between sessions via browser back/forward but refuses to switch mid-stream (S.busy guard, mirroring the cross-tab storage handler). The cross-tab storage handler was deliberately defanged so it only re-renders the sidebar — it no longer force-loads the new sid into the current tab. (api/routes.py, static/boot.js, static/commands.js, static/index.html, static/messages.js, static/sessions.js, static/terminal.js, static/ui.js, static/workspace.js, tests/test_session_cross_tab_sync.py, tests/test_session_lineage_collapse.py) @dso2ng — PR #1392

Changed

• Settings toggle: "Show CLI sessions" → "Show non-WebUI sessions" (#1407) — the old label was misleading: the feature surfaces conversations from CLI, Telegram, Discord, Slack, WeChat, and other non-WebUI channels — not just CLI. The new label captures the actual scope. Pure rename across all 8 locales (en, zh, zh-Hant, ru, es, de, pt, ko); underlying logic untouched. Reordered channel examples by global adoption (Telegram, Discord, Slack first; WeChat de-emphasized). (static/i18n.js, static/index.html, tests/test_korean_locale.py) @franksong2702 — PR #1407

• popstate handler refuses to switch sessions mid-stream — Opus pre-release follow-up. Mirrors the same S.busy guard the cross-tab storage handler had. A user mid-stream who absent-mindedly hits browser Back used to lose their active turn (PR #1392 introduced the popstate listener without the guard). Now shows a toast and stays on the current session. 1 regression test in test_v050254_opus_followups.py. (static/sessions.js)

Added

• Messaging sessions get a WebUI handoff path without exposing every raw channel segment — Weixin and Telegram sessions imported from Hermes Agent are now treated as messaging-source conversations: sidebar results keep only the latest visible session per channel, preserve source metadata through compact/import paths, and avoid destructive/duplicating menu actions that would imply WebUI owns the external channel history. Messaging sessions with enough external conversation rounds show a composer-docked handoff prompt; clicking it generates a transcript card summary for the user without inserting a fake command bubble. This is PR2 for the #1013 channel-handoff direction and intentionally does not cover the separate CLI Session follow-up. (api/models.py, api/routes.py, static/index.html, static/messages.js, static/sessions.js, static/style.css, static/ui.js, tests/test_gateway_sync.py, tests/test_issue1013_handoff_dock.py) @franksong2702 — refs #1013

[v0.50.253] — 2026-05-01

Added

• /branch slash command — fork a conversation from any message (#1342, closes #465) — adds a /branch [name] slash command and a "Fork from here" hover action on every message. Forking deep-copies the conversation up to a given message index into a brand-new session that inherits the source's workspace, model, profile, and the title (with "(fork)" appended). Fresh state for session_id, timestamps, tokens, cost, active_stream_id, pending_user_message, pending_attachments. The new parent_session_id field on Session is gated in compact() to emit only when truthy — sessions without a fork link don't leak parent_session_id: None into /api/sessions payloads, preserving the v0.50.251 lineage end_reason gating in agent_sessions.py. Endpoint validates session_id is a string and keep_count >= 0 before slicing. 21 regression tests in test_465_session_branching.py. (api/routes.py, api/models.py, static/commands.js, static/i18n.js, static/icons.js, static/sessions.js, static/ui.js, tests/test_465_session_branching.py) @bergeouss — PR #1342, fixes #465

Fixed

• Local model setup no longer fails mid-conversation with LOCAL_API_KEY error (#1388, closes #1384) — when model.base_url pointed at an OpenAI-compatible loopback endpoint that didn't match the ollama/localhost/lmstudio keyword classifier (e.g. http://192.168.1.10:8080/v1, llama.cpp on 127.0.0.1:8080, vLLM, TabbyAPI, custom proxies), _build_available_models_uncached auto-detected the provider as "local" and persisted that into config.yaml. Inference worked initially because the main agent has its own direct path that uses the explicit base_url + api_key, but once the conversation grew enough to trip auto-compression — or when vision / web extraction / skills-hub fired — the agent's auxiliary client routed through resolve_provider_client("local", …), fell through every branch (since "local" is not in hermes_cli.auth.PROVIDER_REGISTRY), and raised Provider 'local' is set in config.yaml but no API key was found. Three-layer fix: (1) the auto-detect block now writes provider: "custom" instead of "local" for unknown loopback hosts — custom is the canonical OpenAI-compat fall-through; (2) resolve_model_provider() rewrites legacy "local" to "custom" at read time so existing broken configs heal automatically; (3) set_hermes_default_model() refuses to persist "local" going forward, with a _PROVIDER_ALIASES["local"] = "custom" entry. 9 regression tests in test_issue1384_local_provider.py. (api/config.py, tests/test_issue1384_local_provider.py) — PR #1388

• Mobile composer layout: progressive-disclosure config panel + scoped titlebar safe-area (#1381) — the mobile composer had two separate pressure points: normal browser/webview shells could end up with extra titlebar spacing from top safe-area padding, and the composer had more always-visible controls than narrow phone widths can comfortably support. The titlebar fix: top safe-area padding now applies only in (display-mode: standalone), (display-mode: fullscreen) — installed/PWA mode — via --app-titlebar-safe-top. The composer fix: a phone-only config button collapses workspace/model/reasoning/context controls into a panel above the composer, keeping the primary inline row at attach + voice + profile + workspace files + config + send. Compact context badge on the config button. Pre-release fixes: (1) base .composer-mobile-config-btn{display:none} rule had equal specificity with .icon-btn{display:flex} and lost the cascade (later in source wins) — bumped to .icon-btn.composer-mobile-config-btn{display:none} so the button stays hidden at desktop widths. (2) Uppercase WORKSPACE/MODEL/REASONING kicker labels at 700-weight overflowed the 60px copy column on iPhone 14 — hidden inside the open panel via .composer-mobile-config-action:not(.composer-mobile-context-action) .composer-mobile-config-kicker{display:none} so the icon + value gives a clean two-row layout. Context row keeps its kicker since it stretches to full panel width. Plus a follow-up commit from the contributor tightening composer spacing on 320px legacy phones (@media (max-width: 340px) block). 47 mobile-layout regression tests pass. (static/i18n.js, static/index.html, static/panels.js, static/style.css, static/ui.js, tests/test_mobile_layout.py) @starship-s — PR #1381

Changed

• /branch endpoint validates input types and ranges — Opus pre-release follow-up. Reject non-string session_id with a clear 400 (was raising TypeError → confusing 500 from get_session()). Reject negative keep_count with a clear 400 (Python slice semantics on negative produces "all but last N", which is confusing fork behavior). 2 regression tests in test_v050253_opus_followups.py. (api/routes.py)

• Strip 9 orphan wiki_* i18n keys — Opus pre-release follow-up. Commit 52bfcea (#1342) leaked wiki_panel_title, wiki_panel_desc, wiki_status_label, wiki_entry_count, wiki_last_modified, wiki_not_available, wiki_enabled, wiki_disabled, wiki_toggle_failed across all 8 locales (72 lines total) from a different branch — zero references outside i18n.js. Stripped, with regression test pinning that they don't return. (static/i18n.js, tests/test_v050253_opus_followups.py)

[v0.50.252] — 2026-05-01

Fixed

• CLI session import no longer crashes when metadata row is missing — _handle_session_import_cli only assigned model inside the for cs in get_cli_sessions(): if cs["session_id"] == sid loop. Sessions that existed in the messages store but were missing from the metadata index (post-pruning, race during cron job export, etc.) reached the downstream import_cli_session(sid, title, msgs, model, ...) call with model unbound and crashed with UnboundLocalError. The fix initializes model = "unknown" before the loop so the import proceeds with a sensible default. Added a regression test that asserts the init lives before the loop. (api/routes.py, tests/test_session_import_cli_fallback_model.py) @trucuit — PR #1386
• Streaming scroll no longer yanks the viewport when tool/queue cards insert (#1360) — three independent paths could re-pin a user mid-read while the agent streamed: (a) browser scroll-anchoring on #messages shifted the scroller when card heights changed, (b) the queue-card render setTimeout called unconditional scrollToBottom() regardless of stream state, and (c) the queue-pill click handler did the same. Now #messages has overflow-anchor:none, the near-bottom re-pin dead zone widens from 150px to 250px (small macOS-app windows + trackpad momentum no longer re-pin too eagerly), and both queue-card paths respect S.activeStreamId — using scrollIfPinned() mid-stream and falling back to scrollToBottom() only after the stream ends. 4 regression tests pin all four invariants. (static/style.css, static/ui.js, tests/test_issue1360_streaming_scroll_hardening.py) @NocGeek — PR #1377, fixes #1360
• API credential redaction no longer regresses for ghp_* / sk-* / hf_* / AKIA* tokens — _build_redact_fn() previously returned the agent's redact_sensitive_text directly whenever agent.redact imported. The agent redactor missed several common credential prefixes that the WebUI's local fallback already knew how to mask, so session/search/memory API responses could leak plaintext credentials. Now both run in series — agent first (handles broader patterns when HERMES_REDACT_SECRETS is enabled), local fallback second (always-on, catches the common token shapes). The chained order is safe: agent masking shortens tokens to a prefix...suffix form that the fallback regex's character class no longer matches, so no double-redaction. The agent-broader patterns (Stripe sk_live_, Google AIza…, JWT eyJ…) still depend on the env var; opening a follow-up to switch the WebUI call to force=True. (api/helpers.py) @NocGeek — PR #1379
• /status slash command shows the resolved Hermes home directory (refs #463) — the WebUI /status card already showed model, profile, workspace, timestamps, and token counts but was missing the profile-aware Hermes home path that the CLI's hermes status displays. session_status() now returns profile and hermes_home keys (resolved via get_hermes_home_for_profile() so named profiles resolve to their dedicated dirs), and commands.js cmdStatus renders the new Hermes home: line. New status_hermes_home i18n key added across all 8 locales (en/ru/es/de/zh/zh-Hant/pt/ko). (api/session_ops.py, static/commands.js, static/i18n.js, tests/test_session_ops.py) @NocGeek — PR #1380, refs #463

Added

• /api/models/live now caches results for 60 seconds — repeated model-list refreshes (every panel open, every workspace switch) hit upstream provider APIs every time. The new in-memory TTL cache keyed by (active_profile, provider) returns deep copies so callers can't mutate the cache, expires after 60s, and is guarded by threading.RLock for thread-safety. The cache lives next to _handle_live_models and is cleared via _clear_live_models_cache() in tests. 4 regression tests cover hit-within-TTL, expiry, profile-scoping (default vs research stay separate), and mutation isolation. (api/routes.py, tests/test_live_models_ttl_cache.py) @NocGeek — PR #1378
• WebUI explains CLI-only slash commands instead of forwarding them to the model — typing /browser connect or any other Hermes CLI-only command in the WebUI used to fall through as plain text, so the model would explain the command instead of the app. The frontend now lazy-fetches /api/commands metadata, matches by name and aliases, and intercepts any command flagged cli_only with a local assistant message that explains the command is CLI-only. Special note for /browser about how WebUI's browser tools must be configured server-side (CLI-only /browser itself does not work in the WebUI). Built on the existing cli_only field that /api/commands already exposed; no agent-side changes. (static/commands.js, static/messages.js, tests/test_cli_only_slash_commands.py) @NocGeek — PR #1382

Changed

• API credential redaction now uses force=True — _combined_redact (introduced by #1379) now passes force=True to redact_sensitive_text so the agent's broader patterns (Stripe sk_live_, Google AIza…, JWT eyJ…, DB connection strings, Telegram bot tokens) run regardless of the user's HERMES_REDACT_SECRETS opt-in. The local fallback then handles the short-prefix shapes the agent omits (ghp_, sk-, hf_, AKIA). WebUI API responses are a hard safety boundary — no opt-in should be required. (api/helpers.py) — Opus pre-release follow-up
• _active_profile_for_live_models_cache logs the fallback path — when get_active_profile_name() raises (transient state, mid-switch, etc.) the live-models cache (#1378) falls back to "default", mis-scoping the cache for up to 60s. Now logs at debug so we can detect this in production logs without changing the blast radius (TTL still caps the bad-cache window). (api/routes.py) — Opus pre-release follow-up

[v0.50.251] — 2026-04-30

Fixed

• Sidebar lineage collapse now works for WebUI JSON sessions, not just imported gateway rows — PR #1358 (v0.50.249) added the client-side lineage-collapse helper but /api/sessions only included _lineage_root_id for gateway-imported rows. WebUI JSON sessions (the common case) had no grouping key, so cross-surface continuation chains (CLI-close → WebUI continuation, or compression chains within WebUI) still rendered as separate sidebar rows. Now /api/sessions reads parent_session_id and end_reason from state.db.sessions for every WebUI session id in the sidebar payload, walks the parent chain when end_reason in {'compression', 'cli_close'}, and exposes _lineage_root_id + _compression_segment_count. Cycle-detected via a seen set; depth-bounded to 20 hops to cap pathological data. Pre-release fix: swapped the original full-table-scan for a parameterized WHERE id IN (...) query that hits PRIMARY KEY + idx_sessions_parent — ~50× faster at 1000 rows, scales linearly. Pre-release fix: chunked IN clause to 500 vars to stay under SQLITE_MAX_VARIABLE_NUMBER on older sqlite (Python 3.9 ships sqlite 3.31 with default limit 999) — without this a power user with 2000+ sessions in the sidebar would hit OperationalError: too many SQL variables, the silent except-wrapper would swallow it, and lineage collapse would never work for them. Pre-release fix: tightened parent_session_id exposure — only emitted when the parent's end_reason is compression or cli_close (not for user_stop/etc), since the frontend's _sessionLineageKey falls through to parent_session_id and would incorrectly collapse two children of a non-continuation parent into a single row. (api/agent_sessions.py, api/models.py, tests/test_session_lineage_metadata_api.py, tests/test_pr1370_lineage_metadata_perf_and_orphan.py, tests/test_gateway_sync.py) @dso2ng — PR #1370
• Manual cron runs persist output and metadata like scheduled runs — manual WebUI cron runs called cron.scheduler.run_job(job) and then only cleared the in-memory running flag. The job's output was dropped (never written via save_job_output) and last_run_at / last_status were never updated. Now the manual-run wrapper (_run_cron_tracked) matches the scheduled-cron path at cron/scheduler.py:1334-1364 exactly: saves output, marks the job complete, treats empty final_response as a soft failure (with the same error string), and records failures via mark_job_run(False, str(e)). (api/routes.py, tests/test_cron_manual_run_persistence.py) @NocGeek — PR #1372 (split out from the held #1352 per pre-release feedback)
• Reasoning trace, tool calls, and partial output preserved on Stop/Cancel — three distinct data-loss paths fixed: §A reasoning text accumulated in a thread-local _reasoning_text was invisible to cancel_stream() because it went out of scope when the thread was interrupted; §B live tool calls in thread-local _live_tool_calls were similarly lost; §C reasoning-only streams (no visible tokens) produced no partial assistant message because the thinking-block regex strip returned empty string and the if _stripped: guard skipped the append. The fix mirrors the existing STREAM_PARTIAL_TEXT pattern (#893) by adding two new shared dicts (STREAM_REASONING_TEXT, STREAM_LIVE_TOOL_CALLS) populated during streaming and read by cancel_stream(). The cancel path now appends the partial assistant message when content text, reasoning trace, OR tool calls exist (not just text). Eliminates "paid tokens disappeared" reports on Stop. 8 regression tests covering all three sections plus tools+text combinations. (api/config.py, api/streaming.py, tests/test_issue1361_cancel_data_loss.py) @bergeouss — PR #1375, fixes #1361
• New profiles route sessions to the profile dir on first use, not back to default — get_hermes_home_for_profile() had a if profile_dir.is_dir(): return profile_dir; return _DEFAULT_HERMES_HOME fallback. New profiles (no session yet, so no dir) routed every session back to default until the directory existed on disk — making profile switching silently broken for the first session of every new profile. Removed the is_dir() guard; the profile path is now returned unconditionally and the directory is created on first use by the agent/session layer. Path traversal is still blocked by the _PROFILE_ID_RE regex (^[a-z0-9][a-z0-9_-]{0,63}$); R19j tests were updated to pin that the regex is now the sole defense. R19c was tightened to assert the new behavior. 5 regression tests in test_issue1195_session_profile_routing.py covering existing-profile, non-existent-profile (the core fix), None, empty-string, and 'default' return paths. (api/profiles.py, tests/test_issue798.py, tests/test_issue1195_session_profile_routing.py) @bergeouss — PR #1373, fixes #1195

[v0.50.250] — 2026-04-30

Fixed

• Cross-tab thinking-card cleanup no longer touches the wrong session's DOM — switching browser tabs while a stream is running could leave finalizeThinkingCard() operating on a stale liveAssistantTurn node — the thinking card belonged to the stream that started it, not the session currently displayed in the active tab. The guard early-returns when the live turn's dataset.sessionId does not match S.session.session_id. Per-site stamps were also added: every place that creates liveAssistantTurn (3 sites in static/ui.js) now writes the current session id onto dataset.sessionId so the guard has the data it needs to compare. Without the stamps the guard would always early-return (because undefined !== "<sid>" is always true), breaking the streaming UI completely — caught during pre-release review of #1366. Plus a regression test that fails any future liveAssistantTurn creation site that forgets the stamp. (static/ui.js, tests/test_pr1366_finalize_thinking_card_guard.py) @JKJameson — PR #1366
• Clarify SSE health timer is now an actual stale-detector, not an unconditional 60s force-reconnect — the timer at static/messages.js:1715 shipped in v0.50.249 / PR #1355 closed and re-opened the EventSource every 60s regardless of activity, with a comment that wrongly claimed it was a "no event in 60s" detector. Effects on healthy connections: one TCP/SSE setup+teardown per minute per active session, plus a clarify._lock round-trip and fresh initial snapshot push from the server. Now tracks lastEventAt on initial/clarify event arrivals; only reconnects when the gap exceeds 60s. On a session with steady clarify traffic the timer never reconnects; on a long-idle session it still reconnects roughly every 60-120s (the residual idle reconnect could be eliminated with a server-side ping event or a longer threshold — tracked as a follow-up). Originally pulled out of the v0.50.249 batch as out-of-scope; brought back per the rule that small correctness-improving fixes ship even when flagged out-of-scope. (static/messages.js) — PR #1367 (Opus pre-release review of v0.50.249, SHOULD-FIX #2)
• Preferences panel autosaves all fields (Phase 2 of #1003) — extends the autosave pattern from the Appearance panel to the Preferences panel so 13 preference fields (send_key, language, show_token_usage, simplified_tool_calling, show_cli_sessions, sync_to_insights, check_for_updates, sound_enabled, notifications_enabled, sidebar_density, auto_title_refresh_every, busy_input_mode, bot_name) save automatically without requiring a manual "Save Settings" click. 350ms debounce on field changes (additional 500ms wrapper on the bot_name text input). Inline status feedback (saving / saved / failed + retry). Password field still requires explicit save (security — never autosave passwords). Model selector still requires explicit save (different code path). Reuses the i18n keys (settings_autosave_saving/saved/failed/retry) already present in all 8 locales from Phase 1. (static/index.html, static/panels.js) @fecolinhares — PR #1369

[v0.50.249] — 2026-04-30

Added

• Real-time clarify notifications via SSE long-connection — replaces the 1.5s HTTP polling loop for clarify (/api/clarify/pending) with a Server-Sent Events endpoint at /api/clarify/stream?session_id= that pushes clarify events to the browser the instant they fire. Mirrors the approval-SSE pattern shipped in v0.50.248 (#1350) including all the correctness lessons learned during that release: atomic subscribe + initial snapshot inside a single with clarify._lock: block (no snapshot/subscribe race), _clarify_sse_notify invoked from inside _lock in both submit_pending and resolve_clarify (no notify-ordering race), payload built from q[0].data head-of-queue (not the just-appended entry), and resolve_clarify re-emits the new head (or None/0 when empty) so trailing clarify prompts never get stuck. Frontend uses EventSource with automatic 3s HTTP polling fallback on onerror, plus a 60s reconnect timer to recover from silently-broken connections. Bounded queue.Queue(maxsize=16) per subscriber with silent drop on full prevents memory leaks from slow tabs. 29 new static-analysis + unit + concurrency tests. (api/clarify.py, api/routes.py, static/messages.js, tests/test_clarify_sse.py) @fxd-jason — PR #1355

Fixed

• Context window indicator no longer shows misleading "100% used (0% left)" when context_length is missing from the live SSE payload — the v0.50.247 / PR #1348 fallback to agent.model_metadata.get_model_context_length() was applied to the session-save path but NOT to the live SSE usage event. For sessions on large-context models (e.g. claude-sonnet-4.6 via OpenRouter, 1M tokens) where the agent didn't have a compressor configured, usage.context_length was omitted from the SSE payload, the JS frontend defaulted to 128K, and cumulative input_tokens over multiple turns overflowed against the 128K default — clamping the ring to 100% with a tooltip claiming the context was "0% left." The fix mirrors the session-save fallback exactly: when usage.context_length is missing, resolve via get_model_context_length(model, base_url) and write it onto the usage dict before serialization. Symmetric fallback added for last_prompt_tokens (uses s.last_prompt_tokens instead of the cumulative input_tokens counter). Frontend now tracks rawPct separately from the clamped pct; when rawPct > 100 the tooltip shows ${rawPct}% used (context exceeded) instead of misleading users. (api/streaming.py, static/ui.js) — PR #1356
• "Uploading…" composer status persists for the entire stream duration after a file upload — setComposerStatus('Uploading…') was set before uploadPendingFiles() but never cleared after the upload completed; only setBusy(false) at the end of the agent stream eventually wiped it. Users saw "Uploading…" displayed during the agent response, which is misleading. The fix clears the status unconditionally after the upload await completes. UX defect, no behavior change to upload correctness or message text. (static/messages.js) — PR #1356
• Imported CLI/gateway session metadata survives compact() round-trip — Session.load_metadata_only().compact() was dropping is_cli_session, source_tag, session_source, and source_label, so imported agent/Telegram/messaging sessions in the sidebar lost their provenance after the metadata-only fast path. Adds these four fields to Session.__init__, the METADATA_FIELDS save round-trip, and compact() output. Without this, sidebar payloads couldn't distinguish imported sessions from native WebUI ones. (api/models.py, tests/test_gateway_sync.py) @dso2ng — PR #1357
• Sidebar collapses compression-lineage segments instead of showing every segment as a separate row — when an agent session has a compression lineage (_lineage_root_id populated by the gateway-import path in api/agent_sessions.py:169), the sidebar previously listed each segment as its own top-level conversation, cluttering the list with what the user perceives as a single conversation. Adds a pure client-side helper _collapseSessionLineageForSidebar() that groups by _lineage_root_id/lineage_root_id/parent_session_id, keeps only the most recently active tip per group, and stores _lineage_collapsed_count on the visible row for future UI affordances. Non-destructive — no session JSON or messages are merged, deleted, or rewritten. Only collapses rows when lineage metadata is present. (static/sessions.js, tests/test_session_lineage_collapse.py) @dso2ng — PR #1358
• Active session synchronizes across multiple browser tabs — multiple WebUI tabs sharing the same localStorage would diverge from each other when one tab switched sessions, leaving idle tabs with stale in-memory active-session state until their next user action wrote into the wrong session. Adds a storage event listener on the hermes-webui-session localStorage key. Idle tabs auto-load the new active session and re-render the sidebar cache. Busy tabs (currently mid-turn) do not auto-switch — they show a brief toast instead, so the user notices but the active turn isn't interrupted. (static/sessions.js, tests/test_session_cross_tab_sync.py) @dso2ng — PR #1359

[v0.50.248] — 2026-04-30

Added

• Real-time approval notifications via SSE long-connection — replaces the 1.5s HTTP polling loop with a Server-Sent Events endpoint at /api/approval/stream?session_id= that pushes approval events to the browser the instant they fire. Cuts approval latency from up to 1.5s down to near-instant and eliminates the "always polling" network noise users observed. Backend uses a thread-safe subscriber registry (_approval_sse_subscribers dict, bounded queue.Queue(maxsize=16) per subscriber, silent drop on full to prevent leaks from slow tabs). 30s keepalive comments prevent proxy/CDN timeouts; _CLIENT_DISCONNECT_ERRORS + finally block guarantee subscriber cleanup on any exit path. Subscribe and snapshot are taken atomically under a single _lock acquisition so a submit_pending() arriving in the gap can't be lost. Notify runs inside the queue-mutation lock in both submit_pending and _handle_approval_respond so two parallel callers can't deliver out-of-order with stale pending_count. SSE payload always reflects head-of-queue, never tail, matching /api/approval/pending's contract — with parallel tool-call approvals (#527), the just-appended entry is at the tail but the UI must show the head. _handle_approval_respond now re-emits the new head after popping so a trailing approval queued behind the one being responded to is surfaced immediately instead of getting stuck until the next event. Frontend uses EventSource with automatic 1.5s HTTP polling fallback on onerror (preserves degraded-mode parity with v0.50.247). 50 tests cover wiring, lifecycle, multi-subscriber, cross-session isolation, queue overflow, concurrent subscribe/notify stress, atomic-lock invariants, head-fidelity, trailing-approval re-emission, and notify-order monotonicity. (api/routes.py, static/messages.js, tests/test_approval_sse.py, tests/test_pr1350_sse_atomic_subscribe.py, tests/test_pr1350_sse_notify_correctness.py) @fxd-jason — PR #1350

Fixed

• Context indicator percentage shows even without explicit context_length — frontend companion to the v0.50.246 backend fix. The context ring used to display · (no data) whenever context_length was 0 or missing — fresh agents, interrupted streams, or models without compressor state. Now defaults to 128K when usage.context_length is falsy and labels the indicator with (est. 128K) so users can tell apparent vs. measured. Falls back to input_tokens for last_prompt_tokens so the ring lights up immediately on the first user message. (static/ui.js) @fxd-jason — PR #1349

[v0.50.247] — 2026-04-30

Added

• Cron job sessions auto-assigned to a dedicated "Cron Jobs" project — sessions originating from the cron scheduler now appear in their own project group in the sidebar instead of mixed in with regular chat sessions. Detection runs against either the session's source_tag == 'cron' or a cron_ ID prefix, both for live get_cli_sessions() calls and on _handle_session_import_cli import. The project is created idempotently on first cron session via ensure_cron_project() (thread-safe, returns the same project_id on every subsequent call). Locale parity across all 8 supported languages (en, es, de, zh, zh-Hant, ru, pt, ko) for the new cron_jobs_project key. (api/models.py, api/routes.py, static/i18n.js, tests/test_1079_cron_session_project.py) @bergeouss — PR #1345, closes #1079

[v0.50.246] — 2026-04-30

Added

• Render fenced code blocks in user messages — typing a triple-backtick fenced code block in the composer now renders with proper code styling, syntax-aware diff/patch coloring, and the same <pre><code> pipeline used for assistant responses. Plain user text outside fences stays escaped (no markdown bold/italic/links interpreted in user bubbles); only fenced blocks are upgraded. Includes specialized colored-line rendering for diff / patch languages. (static/ui.js, tests/test_1325_user_fenced_code.py) @bergeouss — PR #1335, fixes #1325

Fixed

• Stop/Cancel during streaming no longer wipes the user's typed message (data-loss bug) — When a user clicked Stop while the agent was streaming, cancel_stream() cleared pending_user_message before the streaming thread had merged the user turn into s.messages, persisting a session with neither the pending field nor a corresponding message. The user's typed text was permanently lost from the session JSON, not just the in-memory client copy. Now cancel_stream() synthesizes a user turn into s.messages from pending_user_message (with attachments preserved) when the most recent user message isn't already that turn — guards against double-append by content-matching against the last user message. (api/streaming.py, tests/test_issue1298_cancel_and_activity.py) — fixes #1298 (issue 2)
• Activity panel no longer auto-collapses when new tool/thinking events arrive — Both ensureActivityGroup() (which re-creates the group with tool-call-group-collapsed on every destroy/recreate) and finalizeThinkingCard() (which force-adds the collapsed class on every tool boundary) ignored the user's manual expand. Tracks the user's last explicit toggle on the live activity group in a per-turn singleton (_liveActivityUserExpanded), restored on re-create and respected by the finalize path. Cleared between turns by clearLiveToolCards(). (static/ui.js, tests/test_issue1298_cancel_and_activity.py) — fixes #1298 (issue 1)
• Stale Mermaid render errors no longer leak into every chat — Mermaid's render-failure path leaves a temporary <div id="d<id>"> body-level node containing a "Syntax error in text" SVG. The previous code never removed it, so once any Mermaid block failed (or got mis-detected as Mermaid), every subsequent tab kept the syntax-error SVG visible regardless of content. Also tightens Mermaid detection so line-numbered tool output (123|line) and code blocks that don't start with a recognized Mermaid keyword are no longer mis-parsed as Mermaid; failed blocks are marked so a later render pass can't retry them. (static/ui.js, tests/test_issue347.py) @dso2ng — PR #1337
• Static asset cache busts automatically on every release — <script src="static/ui.js"> and friends were cached indefinitely by browsers and the service worker, so a new release with bug fixes could be invisible to a user until they hard-refreshed. Now index.html and sw.js registration both inject the current WEBUI_VERSION git tag as a ?v= query string, URL-encoded server-side so unusual git tag formats can't break the JS. The service worker also no longer intercepts requests for itself, ensuring the browser always fetches the freshly-versioned sw.js directly from the network. (api/routes.py, static/index.html, static/sw.js, tests/test_pwa_manifest_sw.py) @dso2ng — PR #1337
• Context window indicator persists across page reloads (#1318 — fully fixed) — Session.__init__ now accepts context_length, threshold_tokens, and last_prompt_tokens; save() persists them via the METADATA_FIELDS round-trip and compact() exposes them on the GET /api/session response. Critically, api/streaming.py now writes the values from agent.context_compressor onto the session inside the post-merge per-turn save block, so the values land on disk and survive a page reload. Without that writer, the model fields would have been pure scaffolding — present but never populated. The frontend context-ring indicator was previously losing its percentage on every session load because nothing was writing these fields to disk; that data flow is now end-to-end. (api/models.py, api/routes.py, api/streaming.py, tests/test_pr1341_context_window_persistence.py) @fxd-jason — PR #1341 (focused split from the held PR #1318) + writer added during pre-release review
• fallback_providers list config no longer crashes streaming — api/streaming.py:1701 previously read _cfg.get('fallback_model') and called .get('model', '') on the result. When users had fallback_providers: [{...}, {...}] in their config (the chained-fallback form documented in CHANGELOG since v0.50.151), the streaming path crashed with AttributeError: 'list' object has no attribute 'get'. Now consults both fallback_model (single dict, legacy) and fallback_providers (list, new), picks the first valid entry from the list, and defends both paths with isinstance checks. (api/streaming.py, tests/test_pr1339_fallback_providers_list.py) @jimdawdy-hub — PR #1339

Changed

• CI test stability — test_checkpoint_fires_on_activity_counter_increment was rewritten to use deterministic threading.Event synchronization instead of time.sleep windows. The old version polled at 0.1s intervals and slept 0.15s/0.25s/0.25s between activity increments, which intermittently failed under CI scheduling jitter (one save instead of two). The new version waits up to 3.0s for the checkpoint thread to actually advance after each increment, with no sensitivity to scheduler timing. (tests/test_issue765_streaming_persistence.py)

Documentation

• CONTRIBUTORS.md — new file with stack-ranked credit roll for all 66 contributors, generated from git log + gh api + CHANGELOG attribution lines. Top contributors table at top of README.md.
• README, ROADMAP, ARCHITECTURE, SPRINTS, TESTING — refreshed to v0.50.246 / 3309 tests; removed stale v0.50.36-local.1 header from ARCHITECTURE.md; updated SPRINTS.md "Where we are now" to reflect ~95% Claude parity. (PR #1340 — already merged, brought forward in this release.)

[v0.50.245] — 2026-04-30

Fixed

• Cron Run Now no longer crashes with NameError: run_job is not defined — _run_cron_tracked() runs in a worker thread but referenced run_job only via a local import inside _handle_cron_run() (a different scope). Manual cron execution now imports run_job inside the worker function itself, and the redundant import is removed from the route handler. Adds AST-based regression tests so future refactors can't silently re-break the worker-thread scope. (api/routes.py, tests/test_cron_run_job_import.py) @fxd-jason — PR #1317, fixes #1310 (also addressed by #1312/#1329, closed as duplicates)
• Context auto-compressed banner no longer repeats every turn after first compression — the fallback compression detector compared cumulative compression_count > 0, which stays true forever after the first compression event, so the banner re-fired on every subsequent turn. Now snapshots compression_count before run_conversation() and compares against the snapshot, so the banner only fires when compression actually happens during the current turn. (api/streaming.py) @qxxaa — PR #1316
• Mobile workspace panel sliver and composer footer overlap (#1300) — saved desktop workspace-panel widths leaked into compact/mobile layouts, leaving a thin right-edge workspace sliver and a stale shadow on closed panels. Composer footer controls also showed icon/text overlap at intermediate widths when sidebars constrained the chat column. The fix clears/reapplies the rightpanel inline width only when the viewport is outside the compact/mobile breakpoint, hides the closed off-canvas shadow, and adds staged composer-footer container queries so workspace/model labels collapse before they overlap. (static/boot.js, static/style.css, tests/test_mobile_layout.py) @franksong2702 — PR #1328, fixes #1300
• Streaming sessions stay visible in the sidebar during their first turn — the Untitled + 0-messages filter (#1171) hid sessions during the initial streaming turn because PR #1184 deferred the first save() until the first message landed. Navigating away during a long first turn made the active conversation disappear from the sidebar (looked like data loss to users). The filter now exempts sessions with active_stream_id (index path) or with active_stream_id plus pending_user_message (full-scan path), so in-progress conversations remain visible while truly empty scratch sessions are still hidden. 7 new regression tests cover both filter paths and edge cases. (api/models.py, tests/test_streaming_session_sidebar.py) @franksong2702 — PR #1330, fixes #1327
• Default model rehydration when providers share slash-qualified IDs (#1313) — _deduplicate_model_ids() only de-duplicated bare IDs and skipped slash-qualified IDs entirely, so when two providers exposed the same vendor/model (e.g. two custom providers both listing google/gemma-4-27b), the dropdown contained duplicate <option value> entries and reopening Preferences could snap the saved default model back to the first provider that shared the ID. The dedupe now covers slash IDs as well, the configured-model badge lookup respects the matching provider, and the frontend matcher prefers the configured active_provider when rehydrating a saved default model. (api/config.py, static/panels.js, static/ui.js, tests/test_issue1228_model_picker_duplicate_ids.py, tests/test_model_picker_badges.py) @hacker2005 — PR #1326, fixes #1313
• Configured fallback models always appear in the dropdown — the model picker only rendered configured models that already existed in the loaded <select> options, so when /api/models exposed a fallback chain in configured_model_badges but the underlying provider's catalog (especially local-ollama) was empty or partial, the Configured section showed an incomplete chain. The dropdown now synthesizes entries from configured_model_badges for any configured model missing from the catalog, sorts them as primary → fallback 1 → fallback N, and renders them under a single "Configured" header above the per-provider groups. (static/ui.js, tests/test_model_picker_badges.py) @renatomott — PR #1322
• Duplicate header copy buttons on language-fenced code blocks — for code blocks with a language header, the copy button is appended to the sibling .pre-header, not inside <pre>, but the existing duplicate guard only checked inside <pre>. Repeated post-render passes (cache replays, streaming updates) could append duplicate copy buttons in the header. The guard now also checks the header before creating a new button. (static/ui.js, tests/test_issue1096_copy_buttons.py) @dso2ng — PR #1324, fixes #1096
• zh-Hant locale labels — restore Traditional Chinese in tree/raw view and MCP server settings — a recent locale-merge accidentally left Russian strings in the zh-Hant block for tree-toggle labels, the parse-failed note, and Settings → System → MCP Servers. zh-TW users saw mixed Russian/Chinese UI text in those areas. The labels are now restored to Traditional Chinese, plus a regression test that asserts no Cyrillic characters can slip back into the zh-Hant block. (static/i18n.js, tests/test_chinese_locale.py) @dso2ng — PR #1323
• Docker HEALTHCHECK instruction added — the Dockerfile was missing a HEALTHCHECK, so docker ps couldn't show health, Docker Compose depends_on: condition: service_healthy didn't work, and orchestration tools (K8s, Swarm) couldn't use native health probes. Added a 30s-interval HEALTHCHECK that hits the existing /health endpoint. (Dockerfile) @zichen0116 — PR #1332
• .env.example state-dir default aligned with bootstrap.py — HERMES_WEBUI_STATE_DIR in .env.example referenced the obsolete ~/.hermes/webui-mvp path while bootstrap.py and docker-compose.yml already use ~/.hermes/webui. Updated the example file so users following it land in the same state dir as the rest of the codebase. (.env.example) @zichen0116 — PR #1331

[v0.50.244] — 2026-04-30

Added

• Text-to-Speech playback for agent responses — Web Speech API powers a per-message 🔊 speaker button on every assistant message, plus an optional auto-read toggle that speaks each response when streaming finishes. Voice / rate / pitch controls are exposed in Settings → Preferences. All TTS preferences are stored in localStorage (no server round-trip). Strips markdown, code blocks, and MEDIA: paths before speaking; pauses synthesis when the composer is focused. Opt-in — TTS is hidden by default until enabled in Settings. Locale coverage for en, ru, es, de, zh, zh-Hant, pt, ko. (static/ui.js, static/panels.js, static/messages.js, static/boot.js, static/style.css, static/index.html, static/i18n.js) @fecolinhares — PR #1303, closes #499
• Sienna skin (warm clay & sand earth palette) — opt-in alongside the existing default/Ares/Mono/Slate/Poseidon/Sisyphus/Charizard set. Full palette rewrite (light + dark variants) with clay accent (#D97757) on a soft sand background; neutral tool-card chrome, accent-tinted active session indicator. No forced migration, default skin stays default (gold); users opt in via Settings → Skin. (static/style.css, static/boot.js, static/index.html, tests/test_sienna_skin.py) — PR #1307 (salvaged from #1084)

Fixed

• Cmd/Ctrl+K new chat works while a conversation is busy — drops the !S.busy guard so users can start a new conversation mid-stream. The in-flight stream keeps running on its own session; the user just gets a fresh blank one. (static/boot.js, tests/test_mobile_layout.py) — PR #1306 (salvaged from #1084)
• Stale saved session 404 cleanup + structured api() errors — when a saved session ID returns 404, loadSession() now clears localStorage.hermes-webui-session and rethrows so boot can fall through to the empty state instead of sticking on "Session not available in web UI." across reloads. The cleanup is gated on !currentSid so click-into-404 doesn't wipe state. The global api() helper now attaches .status / .statusText / .body to thrown errors, so callers can branch on HTTP status without re-parsing the message string. (static/sessions.js, static/workspace.js, tests/test_stale_empty_session_restore.py, tests/test_1038_pwa_auth_redirect.py) — PR #1304 (salvaged from #1084)

[v0.50.243] — 2026-04-30

Fixed

• Chip composer model badge — removed the PRIMARY projection — The chip-projected configured-model badge added in #1287 was eating ≈30% of chip width (235px → 164px) without adding signal, since the model name is already right next to it. The dropdown rows still show Primary / Fallback N badges where they actually help distinguish picker entries. Backend _build_configured_model_badges() and the configured_model_badges payload on /api/models are preserved for the dropdown to consume. (static/index.html, static/ui.js, static/style.css, tests/test_model_picker_badges.py) — PR #1301
• Claude Opus 4.7 label rendering — Adds explicit label entries for anthropic/claude-opus-4.7, claude-opus-4.7, and claude-opus-4-7 so the picker no longer renders "Claude Opus 4 7" (missing dot) when the dashed-form model ID falls through to the generic dash-replace formatter. (api/config.py) — PR #1301
• Cron output snippet preserves the ## Response section — /api/crons/output returned txt[:8000] which could drop the useful response section when a large skill dump appeared in the prompt context. Now: if ## Response exists, preserves a short header plus the response section; if no marker exists, returns the file tail rather than the head. (api/routes.py, tests/test_sprint10.py) @franksong2702 — PR #1297, fixes #1295

[v0.50.242] — 2026-04-30

Reverted

• Assistant message serif font (Georgia) — Reverted the global .assistant-turn .msg-body { font-family: var(--font-assistant) } rule introduced in v0.50.240 (PR #1282). Assistant responses now render in the same system sans-serif stack as the rest of the UI, matching pre-v0.50.240 behavior. The --font-assistant CSS token has been removed. (static/style.css)
• Calm Console theme — Removed the data-theme="calm" palette and its associated picker entry, theme-apply branch, and server-side enum value. The theme was the only consumer of the assistant serif rule and was not pulling its weight as a third theme option. Users who selected calm will fall back to the default theme on next page load (the server settings validator now rejects calm and resets to dark). (static/style.css, static/boot.js, static/index.html, api/config.py, tests/test_ui_tool_call_cleanup.py)

[v0.50.241] — 2026-04-30

Added

• Inline audio/video media editor with playback speed controls — MEDIA: tokens and file attachments for audio/video now render as a full media editor card with 0.5×–2× speed buttons, rate stored in localStorage, and a MutationObserver that auto-applies the saved rate to any newly rendered player. Composer tray shows compact inline players for attached audio/video files. (static/ui.js, static/boot.js, static/style.css, static/workspace.js) @nickgiulioni1 — PR #1290 (rebased #1232)
• HTTP byte-range streaming for audio/video — /api/media?inline=1 now handles Range: request headers and returns HTTP 206 Partial Content, enabling seekable playback of large audio and video files. Path access is guarded by the existing within_allowed check before _serve_file_bytes is called. (api/routes.py) @nickgiulioni1 — PR #1290
• PDF and media previews in workspace file browser — PDF, audio, and video files in the workspace panel now render inline instead of forcing download. (static/workspace.js) @nickgiulioni1 — PR #1290
• Configured model badges — models that appear in config.yaml as primary or fallback are now labeled with Primary / Fallback N badges in the model picker, and the badge is carried through to the selected-model chip in the composer header. Badge data persists through the on-disk model cache so it survives server restarts. (api/config.py, static/ui.js, static/index.html, static/style.css) @renatomott — PR #1287
• Appearance autosave — Theme, skin, and font-size pickers in Settings › Appearance now save immediately with inline Saving… / Saved / Failed — Retry status. These controls no longer set the global unsaved-changes dirty state, so closing Settings after tweaking appearance never prompts to discard. Font size is also now persisted to config.yaml and restored on page load. (static/boot.js, static/panels.js, api/config.py, static/i18n.js) @franksong2702 — PR #1289, refs #1003
• Agent session source normalization — Imported Hermes Agent sessions now expose raw_source, session_source, and source_label metadata through both /api/sessions and gateway watcher SSE snapshots. Existing source_tag / is_cli_session compatibility fields remain unchanged so sidebar display is preserved; this lays the groundwork for source-aware sidebar policies. (api/agent_sessions.py, api/gateway_watcher.py, api/models.py) @franksong2702 — PR #1294, refs #1013

[v0.50.240] — 2026-04-30

Added

• Compact tool activity mode (simplified_tool_calling) — new setting (default on) groups tool calls and thinking traces into a single collapsed "Activity" disclosure card per assistant turn instead of showing every step as a separate visible row. Keeps long agent runs readable while keeping full transparency a click away. Also adds a Calm Console theme (calm) with earth/slate palette and serif assistant prose. (api/config.py, static/ui.js, static/panels.js, static/boot.js, static/style.css, DESIGN.md) @Michaelyklam — PR #1282
• PDF first-page preview — MEDIA: links to .pdf files now lazy-load a canvas preview of page 1 via PDF.js CDN (4 MB cap, download fallback). HTML sandbox iframe — .html/.htm files render inline in a sandboxed <iframe srcdoc> with allow-scripts only (256 KB cap). 10 new i18n keys × 7 locales. (static/ui.js, static/style.css, static/i18n.js) @bergeouss — PR #1280, closes #480 #482
• Inline Excalidraw diagram preview — .excalidraw files render as a pure-SVG diagram inline (no external deps; supports rectangles, ellipses, diamonds, text, lines, arrows, freehand; 512 KB cap). (static/ui.js, static/i18n.js) @bergeouss — PR #1279, closes #479
• Inline CSV table rendering — fenced csv blocks and MEDIA: CSV files render as scrollable HTML tables with auto-separator detection (comma/semicolon/tab) and quote stripping. (static/ui.js, static/i18n.js) @bergeouss — PR #1277, closes #485
• Inline SVG, audio, and video rendering — SVG files render as <img>, audio files as <audio controls>, video files as <video controls>. File attachment previews in the composer also get inline display. (static/ui.js, static/i18n.js) @bergeouss — PR #1276, closes #481
• Batch session select mode — a new select-mode toggle in the session list lets users choose multiple sessions and perform bulk Archive, Delete, or Move to Project actions. 11 new i18n keys × 7 locales. (static/sessions.js, static/i18n.js) @bergeouss — PR #1275, closes #568
• Collapsible skill category headers — clicking a category header in the Skills panel collapses or expands its contents without a full re-render; collapsed state persists across filter cycles. (static/panels.js, static/style.css) @bergeouss — PR #1281
• providers.only_configured setting — opt-in config flag that restricts the model picker to providers explicitly configured in config.yaml. Default false (existing behavior unchanged). (api/config.py) @KingBoyAndGirl — PR #1268
• OpenCode Go model catalog updated — adds 7 new models: Kimi K2.6, DeepSeek V4 Pro/Flash, MiMo V2.5/Pro, Qwen3.6/3.5 Plus. (api/config.py) @nesquena-hermes — PR #1284, closes #1269

Fixed

• Profile TERMINAL_CWD no longer causes TypeError — _build_agent_thread_env() merges all thread-local env keys into one dict before passing to _set_thread_env(), so a terminal.cwd entry in config.yaml can no longer conflict with the per-session workspace path. (api/streaming.py) @hi-friday — PR #1266
• Service worker no longer caches subpath API routes — the SW cache-bypass regex now matches /api/* under any mount prefix (e.g. /hermes/api/*), fixing stale session lists when running behind a subpath reverse proxy. (static/sw.js) @Michaelyklam — PR #1278
• SSE client disconnect leaks resolved — TimeoutError and OSError are now treated as normal disconnects; QuietHTTPServer suppresses them silently. Server backlog raised to 64 and handler threads daemonized. Session list renders before saved-session restore so a client-side boot error can no longer leave the sidebar empty. (api/routes.py, server.py, static/boot.js, static/sessions.js) @KayZz69 — PR #1267
• i18n: Korean and Chinese MCP keys corrected, missing locale keys added — 23 Korean MCP strings that had English text replaced with correct Korean; 23 Chinese (zh) strings that had Spanish text replaced with Chinese; 41 missing keys added to zh-Hant; 229 missing keys added to de. (static/i18n.js) @bergeouss — PR #1274, closes #1273

[v0.50.239] — 2026-04-29

Fixed

• h4–h6 markdown headings now render correctly — renderMd() heading replacers are now applied longest-first (###### before ##### before #### before ###…), fixing the regression where h4–h6 headings were emitted as literal # text. CSS adds correct font sizes and color:var(--muted) for h6. (static/ui.js, static/style.css) @the-own-lab — Closes #1258

[v0.50.238] — 2026-04-29

Added

• Portuguese (pt-BR) locale — full i18n coverage for pt locale across all UI panels (chat, sessions, commands, settings, cron, workspace, profiles, skills). (static/i18n.js) @fecolinhares — Closes #1242

Fixed

• Compaction preserves visible prompts — WebUI now keeps model-facing compacted context separately from the visible transcript, so automatic context compaction no longer replaces earlier user prompts in the scrollback. (api/models.py, api/streaming.py, api/routes.py) @franksong2702 — Closes #1217
• MiniMax China provider visible in model picker — MINIMAX_CN_API_KEY now maps to the minimax-cn provider instead of being collapsed into global minimax; WebUI includes a static MiniMax (China) model catalog/display label so providers.minimax-cn: {} can render a populated picker group. (api/config.py, api/providers.py) @franksong2702 — Closes #1236
• Terminal resize and collapse controls restored — restores the collapse/expand dock markup and controlled height CSS variable lost during the v0.50.237 batch integration, and reinstates regression coverage for terminal resizing and collapsed-state behavior. (static/index.html, static/style.css, static/terminal.js, tests/test_embedded_workspace_terminal.py) @franksong2702
• GET /api/mcp/servers returned 404 — the route was placed after handle_get()'s return False sentinel; moved inside the function before the 404 return. (api/routes.py) @KingBoyAndGirl — Closes #1251
• MCP Servers UI showed Korean labels in English locale — 26 i18n keys in the English locale block (en) were accidentally set to Korean translations from PR #538; replaced with correct English text. (static/i18n.js) @bergeouss — Closes #1254
• Live model fetch for custom providers — when provider=custom, the live-model endpoint now reads model.base_url from config and fetches /v1/models from the user's custom OpenAI-compat endpoint. (api/routes.py) @KingBoyAndGirl — Closes #1247
• Profile terminal env applied in WebUI sessions — api/terminal.py now loads the active profile's env overlay before spawning the PTY shell. (api/terminal.py) @dso2ng — Closes #1245
• SSRF: custom provider base_url trusted — _is_ssrf_blocked() now whitelists user-configured custom provider base URLs, preventing false SSRF blocks for legitimate private-network endpoints. (api/routes.py) @KingBoyAndGirl — Closes #1244
• SESSION_AGENT_CACHE LRU limit — unbounded dict replaced with functools.lru_cache (cap 256); prevents memory growth in long-running servers with many sessions. (api/config.py) @happy5318 — Closes #1250
• Native image uploads as multimodal inputs — image attachments uploaded to the workspace are now forwarded to vision-capable models as OpenAI-style image_url data-URL parts instead of text paths. Magic-byte validation rejects non-image files; workspace path validation uses .resolve() + .relative_to() (symlink-safe); 20 MiB per-image cap. (api/streaming.py, api/routes.py, api/upload.py, static/ui.js) @yzp12138 — Closes #1229
• @provider:model hint preserved when hint matches active provider — _resolve_compatible_session_model() was stripping the @provider: prefix when the hint matched the active provider, causing duplicate model IDs from different providers to snap back to the wrong provider on the next render. The hint is now returned unchanged so resolve_model_provider() can route correctly. (api/routes.py) @nesquena-hermes — Closes #1253

[v0.50.237] — 2026-04-29

Added

• Embedded workspace terminal — /terminal slash command opens a compact PTY-backed terminal card anchored above the composer. Supports collapse/expand/dock, resize, restart, clear, copy output, and per-session workspace binding. Env vars are allowlisted so server credentials are not exposed in the shell. (api/terminal.py, static/terminal.js, static/commands.js, static/i18n.js) @franksong2702 — Closes #1099
• Collapsible JSON/YAML tree viewer — fenced json/yaml code blocks get a Tree/Raw toggle. Tree view renders collapsible, type-colored nodes (keys blue, strings green, numbers blue, booleans amber, nulls muted); auto-collapsed beyond depth 2. Default is Tree for blocks with 10+ lines. YAML parsing uses js-yaml loaded lazily via CDN with SRI. (static/ui.js, static/style.css, static/i18n.js) @bergeouss — Closes #484
• Inline diff/patch viewer — fenced diff/patch blocks render with colored +/-/@@ lines. MEDIA: links to .patch/.diff files fetch and render inline with a 50 KB cap. (static/ui.js, static/style.css, static/i18n.js) @bergeouss — Closes #483
• MCP server management UI — Settings › System panel now lists MCP servers with transport badges, and provides add/edit/delete forms. Backend: GET/PUT/DELETE /api/mcp/servers with masked secrets (round-trip safe). i18n coverage across 7 locales. (api/routes.py, static/panels.js, static/i18n.js) @bergeouss — Closes #538
• Cron run status tracking and watch mode — after "Run Now", the cron detail view shows a live spinner, running label, and elapsed timer (polls every 3 s). Auto-starts watch when opening an already-running job. GET /api/crons/status endpoint. Double-run guard prevents concurrent execution of the same job. (api/routes.py, static/panels.js, static/style.css, static/i18n.js) @bergeouss — Closes #526
• Duplicate cron job — Duplicate button in cron detail header pre-fills the create form with the existing job settings, appends "(copy)" to the name (auto-increments on collision), and saves as paused. (static/panels.js, static/i18n.js) @bergeouss — Closes #528
• Upload and extract zip/tar archives into workspace — zip, tar.gz, tgz, tar.bz2, tar.xz files are auto-extracted into a named subfolder. Zip-slip/tar-slip protection via is_relative_to(); zip-bomb protection via 200 MB cumulative extraction limit on actual bytes. (api/upload.py, api/routes.py, static/ui.js, static/i18n.js) @bergeouss — Closes #525
• Workspace directory CRUD — right-click context menu on workspace file/dir rows adds Rename and Delete for directories. shutil.rmtree() guarded by safe_resolve() path validation. Expanded-dir cache updated on rename/delete. (api/routes.py, static/ui.js, static/i18n.js) @bergeouss — Closes #1104
• Workspace drag-to-reorder — drag handles on workspace rows; PUT /api/workspaces/reorder persists new order. Reorder is confirmed (not optimistic); unmentioned workspaces are appended. (api/routes.py, static/panels.js, static/i18n.js) @bergeouss — Closes #492
• Compress affordance in context ring — context usage tooltip shows a pre-fill button for /compress at ≥50% usage (hint style) and ≥75% (urgent red style). No auto-fire. (static/ui.js, static/index.html, static/style.css, static/i18n.js) @bergeouss — Closes #524
• DeepSeek V4, Z.AI/GLM provider, model tags — adds deepseek-v4-flash and deepseek-v4-pro; keeps V3/R1 as (legacy) until 2026-07-24. Adds Z.AI/GLM provider (glm-5.1, glm-5, glm-5-turbo, glm-4.7, glm-4.5, glm-4.5-flash). Provider cards show model names; custom providers from config.yaml are scanned. (api/config.py, api/onboarding.py, static/panels.js) @jasonjcwu — Closes #1213
• NVIDIA NIM provider — adds nvidia to the provider catalog with display name, aliases, model list, API key mapping, OpenAI-compat endpoint (https://integrate.api.nvidia.com/v1), and onboarding entry. (api/config.py, api/providers.py, api/routes.py, api/onboarding.py) @JinYue-GitHub — Closes #1220

Fixed

• Background session unread dots — sidebar unread dots no longer depend solely on message_count delta. Explicit completion markers, polling fallback, INFLIGHT/S.busy sidebar spinner tracking, localStorage-persisted observed-running state, and auto-compression session-id rotation all handled. (static/sessions.js, static/messages.js) @franksong2702 — Closes #856
• Clarify draft preserved on timeout — unsent clarify text is moved to the main composer when the clarify card expires or is dismissed. Countdown indicator shows remaining time; urgent styling for final seconds. (api/clarify.py, static/messages.js, static/style.css, static/index.html) @sixianli — Closes #1216
• Mobile busy-input composer button — unified send/stop/queue/interrupt/steer action button so mobile users (tap-only) can queue, interrupt, or steer while the agent is busy. Dynamic icon/label/color. Removes separate cancel button path. (static/ui.js, static/messages.js, static/sessions.js, static/boot.js, static/i18n.js) @starship-s — Closes #1215
• Session sidecar repair hardened — centralized _apply_core_sync_or_error_marker() helper; non-blocking lock acquire to avoid deadlock in cache-miss repair path; streaming-finally and cache-miss repair paths share logic. (api/models.py, api/streaming.py) @starship-s — Closes #1230
• Scroll position preserved when loading older messages — _loadOlderMessages now uses #messages (the actual scrollable container) instead of #msgInner; resets _scrollPinned after restoring position so scrollToBottom does not re-fire. (static/sessions.js) @jasonjcwu — Closes #1219
• Model picker duplicate IDs across providers — _deduplicate_model_ids() detects bare model IDs appearing in 2+ groups and prefixes collisions with @provider_id: (deterministic alphabetical tie-break). Frontend norm() regex strips @provider: prefixes for fuzzy matching. (api/config.py, static/ui.js) @bergeouss — Closes #1228
• /api/models cache metadata preserved — disk and TTL cache now include active_provider and default_model alongside groups. Legacy groups-only cache files are rejected and rebuilt. (api/config.py) @franksong2702 — Closes #1239
• Clarify model scope copy — composer model-selector dropdown shows "Applies to this conversation from your next message." sticky note; preferences Default Model shows "Used for new conversations." helper text. (static/ui.js, static/boot.js, static/i18n.js) @franksong2702 — Closes #1241
• Workspace panel stale after profile switch — loadDir('.') called in switchToProfile() Case B so the file tree refreshes to the new profile. (static/panels.js) @bergeouss — Closes #1214
• OAuth providers show as unconfigured — expanded _OAUTH_PROVIDERS set; live get_auth_status() fallback for unknown OAuth providers (gated by pid regex validation and closed key_source allowlist). (api/providers.py) @bergeouss — Closes #1212
• MCP delete button XSS — replaced onclick="...esc(s.name)..." inline handler with data-mcp-name attribute + event delegation (absorb fix). (static/panels.js)
• Zip/tar-slip path traversal — replaced startswith prefix check with is_relative_to(); zip-bomb check now tracks actual extracted bytes instead of trusting member.file_size (absorb fix). (api/upload.py)
• Terminal PTY env secret leak — terminal shell env uses a safe allowlist instead of os.environ.copy(), preventing API keys from being visible inside the terminal (absorb fix). (api/terminal.py)
• Terminal resize handle wired — terminalResizeHandle element added to index.html; _terminalEls() returns handle (absorb fix). (static/index.html, static/terminal.js)

[v0.50.235] — 2026-04-28

Fixed

• Profile switch shows correct workspace, model, and chip label immediately — Three separate bugs caused profile switching to appear broken: (1) switch_profile(process_wide=False) returned the old profile's workspace because get_last_workspace() routed through thread-local profile context (still pointing at the old profile during the switch); (2) the model dropdown showed stale results because the in-memory models cache wasn't invalidated; (3) the profile chip stayed on the old name because syncTopbar() returned early without updating it when no session was active. (api/profiles.py, api/routes.py, static/ui.js, tests/test_profile_switch_1200.py) (PR #1203)
• Flaky test stabilisation — test_server_now_ms_compensates_positive_skew used exact-ms equality across two Date.now() calls; fixed with midpoint averaging and ±5 ms tolerance. (tests/test_issue1144_session_time_sync.py)

[v0.50.234] — 2026-04-28

Fixed

• XSS hardening in markdown renderer — HTML tags in LLM output were filtered by tag name only, allowing event handlers like onerror and onclick to pass through on <img> and other elements. The sanitizer now strips all attributes except a per-tag allowlist and blocks javascript:, data:, and vbscript: URL schemes. Incomplete raw tags (<img src=x onerror=...// with no closing >) are escaped before paragraph wrapping so they cannot be completed by the renderer's own output. (static/ui.js)
• Delegated image lightbox — inline onclick handlers on <img class="msg-media-img"> replaced with a single delegated document.addEventListener('click'), eliminating the last source of inline event handler HTML in rendered output. (static/ui.js)
• Workspace trust for macOS symlink paths — /etc on macOS resolves to /private/etc which previously bypassed the blocked-roots check. The new _is_blocked_workspace_path helper compares both the raw and resolved path. Also adds /System and /Library to the blocked roots. (api/workspace.py)
• Legacy /api/chat workspace validation — the synchronous chat fallback endpoint was not routing through resolve_trusted_workspace(), allowing arbitrary paths to be set as workspace. (api/routes.py)
• linked_files type guard — skill view responses with a null or non-dict linked_files field no longer crash the skills API. (api/routes.py) (by @bschmidy10, PR #1201)

[v0.50.233] — 2026-04-28

Fixed

• Workspace trust for /var/home paths — workspaces under /var/home (used by systemd-homed on Fedora/RHEL) were incorrectly blocked because _is_blocked_system_path flagged /var as a system root. The home-directory trust check in both resolve_trusted_workspace and validate_workspace_to_add now correctly trusts any path under Path.home() regardless of where the home directory lives on disk. (api/workspace.py) (by @frap129, PR #1199)

v0.50.236 — 2026-04-28

Bug fixes

• fix(providers): OAuth provider cards now show "Configured" badge when token is via config.yaml — get_providers() was unconditionally overwriting has_key=True (from _provider_has_key()) with has_key=False when get_auth_status() returned logged_in=False, discarding valid working tokens in config.yaml. Also: the Settings panel was filtering out all OAuth providers entirely (filter(p=>p.configurable) — OAuth providers always have configurable=False). Fixes surfaced the actionable auth error string (e.g. "refresh token consumed by Codex CLI") in the provider card body. (#1202)

Improvements

• ux(profiles): profile chip shows spinner and name immediately when switching — The profile chip now gives instant visual feedback on click: the new profile name appears immediately (optimistic update), a small spinner appears on the icon, and the button is disabled to prevent double-clicks. All are cleaned up in a finally block so the UI never gets stuck in a loading state. On error, the chip reverts to the previous name. Additionally, the model dropdown fetch and workspace list fetch are now parallelized (Promise.all) instead of sequential, cutting switch time roughly in half.

Features

• feat: YOLO mode toggle — /yolo slash command and "Skip all this session" button on approval cards. Enables session-scoped approval bypass. ⚡ amber pill in composer footer shows YOLO is active. (by @bergeouss, PR #1152, closes #467)

v0.50.225 — 2026-04-27

Added

• Cron job attention state — recurring jobs that land in a broken state (enabled=false, state=completed, next_run_at=null) now show an amber "needs attention" badge instead of the misleading "off" badge. Detail panel shows a warning banner with Resume & recalculate, Run once, and Copy diagnostics actions. Korean locale translated. (static/panels.js, static/style.css, static/i18n.js) [#1133 @franksong2702]

Fixed

• Image attachments: composer tray thumbnails — pasted/dragged images now show as 56×56 thumbnail chips in the composer instead of paperclip pills. Blob URL revoked on remove. (static/ui.js, static/style.css) [#1135]
• Image attachments: chat history inline — uploaded images in sent messages now load correctly via api/file/raw?session_id=SID&path=FILENAME instead of the broken api/media?path=FILENAME path. Click any image to open a lightbox overlay (dark backdrop, 90vw/90vh, × or Escape to close). (static/ui.js, static/style.css) [#1135] Closes #1095
• pytest state isolation — conftest.py now uses direct assignment for HERMES_WEBUI_STATE_DIR / HERMES_HOME / HERMES_WEBUI_DEFAULT_WORKSPACE so tests importing api.config in the pytest process cannot inherit the real ~/.hermes/webui state tree. (tests/conftest.py) [#1136 @franksong2702]

v0.50.223 — 2026-04-26

Added

• Drag & drop workspace files into composer — files and folders in the workspace file tree are now draggable; dropping them into the chat composer inserts an @path reference at the cursor with smart spacing. OS file drag-and-drop (attach files) still works as before. (static/ui.js, static/panels.js) [#1123 @bergeouss] Closes #1097
• Composer placeholder reflects active profile — when a named profile is active (not default), the composer placeholder and title bar show the profile name (capitalised) instead of the global bot_name; falls back to bot_name/Hermes for the default profile. (static/boot.js, static/panels.js) [#1122 @bergeouss] Closes #1116

Fixed

• Copy buttons — clipboard-write Permissions-Policy — added clipboard-write=(self) to the Permissions-Policy header so Firefox allows navigator.clipboard.writeText(). Extracted _fallbackCopy() with explicit focus() before select() and correct visible-but-hidden positioning (no more -9999px offscreen failure). (api/helpers.py, static/ui.js) [#1125 @bergeouss] Closes #1096
• Model picker shows all configured providers — XAI_API_KEY and MISTRAL_API_KEY env vars now map to x-ai and mistralai respectively. Providers configured in config.yaml under providers: are also detected and shown in the model picker. (api/config.py) [#1126 @bergeouss] Partially closes #604
• api() retries on stale keep-alive after idle — after a long idle period, fetch() throws a TypeError when the TCP connection has been dropped by a NAT or proxy timeout. api() in workspace.js now retries up to 3 times on TypeError only; 4xx/5xx HTTP errors and 401 redirects are not retried. (static/workspace.js) [#1121 @bergeouss] Closes #1118
• Google Fonts allowed in CSP — Mermaid themes inject @import url(fonts.googleapis.com) at render time; the CSP style-src and font-src directives now include fonts.googleapis.com and fonts.gstatic.com. (api/helpers.py) [#1121 @bergeouss] Closes #1112

v0.50.221 — 2026-04-26

Fixed

• Custom providers model dropdown — models dict keys in custom_providers[].models now all appear in the dropdown; previously only the singular model field was read. (api/config.py) [#1111 @bergeouss] Closes #1106
• Custom providers SSRF false positive — hostnames from user-configured custom_providers[].base_url are now trusted through the SSRF check; local inference servers (llama.cpp, vLLM, TabbyAPI) no longer blocked. (api/config.py) [#1113 @bergeouss] Closes #1105
• Mobile/iPad session navigation — tap no longer fails on first touch; replaced hover-triggered layout-shift pattern with onpointerup + right/middle-click filter + touch-action:manipulation. Desktop hover padding restored via @media (hover:hover) so mouse users are unaffected. (static/sessions.js, static/style.css) [#1110 @sheng-di]
• Pasted/dragged images render inline — image attachments now show as <img> with click-to-fullscreen instead of a paperclip badge. Hoisted _IMAGE_EXTS to module scope (was causing ReferenceError in renderMessages); added avif support. (static/ui.js) [#1109 @bergeouss] Closes #1095
• Copy buttons on HTTP — _copyText() helper checks isSecureContext and falls back to execCommand('copy') for plain-HTTP self-hosted installs. Silent failure in addCopyButtons fixed with error feedback. All 6 locales get copy_failed key. (static/ui.js, static/i18n.js) [#1107 @bergeouss] Closes #1096

v0.50.220 — 2026-04-26

Fixed

• Workspace panel collapse priority — as the right panel narrows, the git badge now disappears first (below 220px), the "Workspace" label second (below 160px), and the icon buttons survive the longest. Previously .panel-header used justify-content:space-between with no flex-shrink ratios, compressing all three children simultaneously. Fix: declare .rightpanel as a container-type:inline-size container, replace space-between with gap:6px + flex-shrink ladder (icons=0, label=2, badge=3), and add @container rightpanel queries. (static/style.css) [#1089]
• Project color dot truncated/invisible on long titles — the colored project marker on session items was appended inside .session-title (overflow:hidden;text-overflow:ellipsis), so long titles clipped the dot off entirely. Fix: move dot to a flex sibling in .session-title-row between title and timestamp; move .session-time from position:absolute to margin-left:auto in flex flow; reduce desktop rest padding-right from 86px to 8px (no longer reserving space for an absolute timestamp); mobile rest padding-right from 86px to 40px (same fix). (static/sessions.js, static/style.css) [#1089]

v0.50.219 — 2026-04-26

Fixed

• Project context menu transparent background — the right-click menu on project chips no longer bleeds the session list through it. _showProjectContextMenu was using background: var(--panel), but --panel is not defined in this codebase — CSS fell back to transparent. Fix: use var(--surface) (same opaque variable used by .session-action-menu and other floating popovers). (static/sessions.js) [#1086]
• Project rename / create input auto-sizing — the rename and new-project input is no longer fixed at 100px. CSS changed to min-width:40px; max-width:180px; width:auto. New _resizeProjectInput() helper measures the current value via a hidden span (font properties read from getComputedStyle) and updates the pixel width as the user types. Wired into both _startProjectRename and _startProjectCreate. (static/sessions.js, static/style.css) [#1086]

v0.50.218 — 2026-04-26

Fixed

• Long URL / unbreakable string overflow — chat bubble boundaries no longer overflow when a message contains very long URLs, file paths, or base64 data. overflow-wrap: anywhere added to .msg-body and the user-bubble variant so continuous non-whitespace text wraps at the column edge instead of bleeding into adjacent layout areas. (static/style.css) Closes #1080 [#1081]
• Project chip rename now works — double-clicking a project chip now reliably triggers the rename input. Root cause: onclick was calling renderSessionListFromCache() which destroyed the chip DOM node before ondblclick could fire. Fixed with a 220ms _clickTimer delay on onclick (same pattern used by session items), so a double-click cancels the single-click and invokes rename instead. (static/sessions.js) Closes #1078 [#1082]
• Block-level constructs inside blockquotes — fenced code blocks, headings, horizontal rules, and ordered lists inside blockquotes now render correctly; >-entity-encoded blockquotes from LLM output also render correctly (entity decode moved before the blockquote pre-pass). New pre-pass walks lines fence-aware, strips > prefix, recursively renders stripped content with the full pipeline, stashes rendered HTML with \x00Q token. (static/ui.js, static/style.css) [#1083]

Added

• Project color picker — right-clicking a project chip now shows a context menu with Rename, a row of color swatches, and Delete. Selecting a swatch updates the project color via /api/projects/rename. (static/sessions.js) Closes #1078 [#1082]

v0.50.217 — 2026-04-26

Fixed

• /queue, /interrupt, /steer send normally when agent is idle — typing any of these commands while nothing is running now sends the message as a normal turn instead of showing an error toast. Matches CLI behaviour: commands are mode-sensitive (queue/interrupt/steer when busy, plain send when idle). /stop when idle still shows the error — stopping nothing is always an error. (static/commands.js) [#1076]

v0.50.216 — 2026-04-26

Added

• Compression chain collapse — get_importable_agent_sessions() now merges linear compression continuation chains into a single sidebar entry, showing the chain tip's activity time and model. The chain root's title and start time are preserved for display; the latest importable segment is used for import. Non-compression parent/child pairs are unchanged. (api/agent_sessions.py, tests/test_gateway_sync.py) Closes #1012 [#1012 @franksong2702]
• Comprehensive markdown renderer improvements — blockquote grouping, strikethrough, task lists, CRLF normalisation, nested blockquotes, lists inside blockquotes. See details below. (static/ui.js) [#1073]

Fixed

• Blockquote rendering — consecutive > lines now group into one <blockquote>, blank > continuation lines become <br>, bare > (no space) handled, >> nested blockquotes recurse correctly, lists inside blockquotes render <ul>, inline markdown (bold/italic/code) works inside quotes. (static/ui.js) [#1073]
• Strikethrough — ~~text~~ now renders as <del>text</del> in all contexts (paragraphs, blockquotes, list items). (static/ui.js) [#1073]
• Task lists — - [x] renders as ✅, - [ ] renders as ☐ in all unordered list contexts including inside blockquotes. (static/ui.js) [#1073]
• CRLF line endings — Windows \r\n line endings are normalised at the start of renderMd() so \r never appears in rendered text. (static/ui.js) [#1073]
• HTML/HTM preview in workspace — .html and .htm files now render correctly in the workspace preview iframe. Root cause: MIME_MAP was missing these extensions; the fallback application/octet-stream caused browsers to refuse to render in the iframe. (api/config.py) [#1070]
• Approval card obscured by queue flyout — the approval card's "Allow once / Allow session / Always allow / Deny" buttons are no longer hidden behind the queue flyout when both are visible simultaneously. (static/style.css — one line: z-index:3 on .approval-card.visible) [#1071]
• /steer, /interrupt, /queue not working while agent is busy — typing these commands while the agent is running now executes them immediately instead of queuing the raw text. Root cause: send() returned early inside the busy block before reaching the slash-command dispatcher. Fix: intercept the three control commands at the top of the busy block. (static/messages.js) [#1072]
• Reasoning chip always visible — the composer reasoning chip is now shown for all effort states. When effort is unset/default it shows a muted "Default" label; when explicitly set to none it shows "None". Previously both states hid the chip entirely, removing the affordance to inspect or change it. (static/ui.js, static/style.css) Closes #1068 [#1074 @franksong2702]
• Steer settings copy updated — removed "falls back to interrupt" / "interrupt + send" language across all 6 locales; steer mode now correctly described as "mid-turn correction without interrupting". (static/i18n.js, static/index.html) [#1072]

v0.50.215 — 2026-04-26

Added

• Real /steer command — wires /steer <text> through the agent's thread-safe agent.steer() method rather than falling back to interrupt. Steer text is stashed in _pending_steer and injected into the next tool-result boundary without interrupting the current run, giving the agent a mid-turn course correction. New /api/chat/steer POST endpoint with five graceful fallback reasons (no_cached_agent, agent_lacks_steer, session_not_found, not_running, stream_dead) — any fallback transparently falls back to the existing interrupt+queue mechanism. (api/routes.py, api/streaming.py, static/commands.js, static/messages.js, static/i18n.js) Closes #720 follow-up [#1066 @nesquena]
• Steer leftover delivery — if the agent finishes its turn before hitting a tool boundary, the stashed steer text is drained and emitted as a pending_steer_leftover SSE event; the frontend queues it as a next-turn message, mirroring the CLI's existing leftover path. (api/streaming.py, static/messages.js) [#1066]

Fixed

• Pending files preserved on steer→interrupt fallback — the busy-mode steer path in send() now defers S.pendingFiles=[] until after _trySteer() returns, so staged file attachments are not lost when the steer endpoint falls back to interrupt+queue. (static/messages.js)

v0.50.214 — 2026-04-26

Added

• Busy input mode setting — new Settings → Preferences → Busy input mode dropdown with three options: Queue (default, preserves existing behavior), Interrupt (cancel the current stream and re-send immediately), Steer (placeholder for future mid-stream injection, currently falls back to Interrupt with a toast). (api/config.py, static/messages.js, static/boot.js, static/panels.js, static/index.html, static/i18n.js) Closes #720 [#1062 @bergeouss]
• /queue, /interrupt, /steer slash commands — per-message overrides for the busy mode regardless of the current setting. /queue <msg> enqueues explicitly; /interrupt <msg> cancels the current turn and re-sends; /steer <msg> same today with a future-upgrade toast. (static/commands.js) [#1062 @bergeouss]

Fixed

• /queue command double-bubble — missing noEcho:true caused the raw slash text to be echoed as a user bubble, then the drained message appeared again as a second bubble. (static/commands.js)
• Staged-file duplication via slash commands — cmdQueue, cmdInterrupt, and cmdSteer captured S.pendingFiles but never cleared the tray, so staged files were re-attached on the next send. Added S.pendingFiles=[];renderTray() after enqueue in all three handlers. (static/commands.js)

v0.50.213 — 2026-04-26

Fixed

• Models disk cache now isolated per server instance — moved from /dev/shm/hermes_webui_models_cache.json (shared across all processes) to STATE_DIR/models_cache.json. Each server instance (port 8787 production, port 8789 QA, test runs) has its own cache file, so test/staging environments can no longer overwrite the production model list on the next restart. Also fixes macOS/Windows where /dev/shm doesn't exist. (api/config.py) [#1064]

v0.50.212 — 2026-04-26

Performance

• Model list ~1ms on restart — get_available_models() now writes to a disk cache at /dev/shm on every cold rebuild and reads it back on restart, eliminating the ~30s Z.AI endpoint-probe delay on every server start. TTL raised from 60s to 24h. (api/config.py) [#1060 @JKJameson]
• Thundering-herd prevention — RLock + _cache_build_in_progress flag ensures only one thread runs the cold rebuild while others wait on a Condition variable instead of triggering duplicate 10s provider calls. (api/config.py) [#1060 @JKJameson]
• Credential pool cache — load_pool() results cached per provider (24h TTL) to avoid repeated expensive auth-store reads on every model list refresh. (api/config.py) [#1060 @JKJameson]

Fixed

• Stale SSE blocking — switching sessions now discards in-flight SSE tokens from the previous session before attaching the new one; no cross-session token bleed. (static/sessions.js) [#1060 @JKJameson]
• Pending files cleared after send — ghost attachments no longer appear in the composer tray after sending. (static/sessions.js) [#1060 @JKJameson]
• Textarea focus on session switch — message input automatically focused after switching sessions. (static/sessions.js) [#1060 @JKJameson]
• Instant click for inactive sessions — no loading spinner blocking fast repeated session switches. (static/sessions.js) [#1060 @JKJameson]
• Double-click titlebar to rename — session title can be renamed by double-clicking the active session in the sidebar. (static/sessions.js) [#1060 @JKJameson]
• Draft persistence across switches — composer draft saved/restored when switching sessions. (static/panels.js) [#1060 @JKJameson]
• user-select:none on session titles — prevents accidental text selection on double-click. (static/style.css) [#1060 @JKJameson]
• Cache disk-delete in invalidate_models_cache() — invalidate_models_cache() now also removes the on-disk snapshot so test isolation is preserved and stale cached data is never served after invalidation. (api/config.py)
• _cache_build_in_progress reset on exception — rebuild exceptions no longer leave the flag stuck, which would block waiting threads for 60s. (api/config.py)

v0.50.211 — 2026-04-25

Changed

• Compact sidebar timestamps — session timestamps in the left sidebar now show short labels (1m, 6m, 1h, 1d, 1w) instead of verbose strings like "6 minutes ago". Keeps all existing i18n paths; bucket headers (Today, Yesterday, This week) unchanged. (static/sessions.js, static/i18n.js) [#1057 @pavolbiely]

Added

• Adaptive session title refresh — new opt-in setting (Settings → Preferences → Adaptive title refresh) re-generates the session title from the latest exchange every N turns (5, 10, or 20). Off by default. Runs in a daemon thread after stream end, never blocks the stream. Manual title renames are preserved (double-checked before and after LLM call). (api/streaming.py, api/config.py, static/panels.js, static/i18n.js, static/index.html) [#1058 @bergeouss]

Fixed

• Settings picker active state — theme, skin, and font-size picker cards in Settings → Appearance now correctly highlight the selected option. Root cause: the base CSS rule used !important on border-color, overriding the inline style set by _syncThemePicker() and siblings. Fix moves to an .active class with its own !important rule. (static/style.css, static/boot.js) [#1059]

v0.50.210 — 2026-04-25

Added

• gpt-5.5 and gpt-5.5-mini in model picker — available for openai, openai-codex, and copilot providers. (api/config.py) [#1052 @aliceisjustplaying]
• Login redirects back to original URL after re-login — the iOS PWA auth redirect now passes ?next= with the current path; login.js honors it via a _safeNextPath() helper that guards against open-redirect (rejects //, backslash, and non-path-absolute inputs). (static/login.js, static/ui.js, static/workspace.js) [#1053]

Fixed

• Non-standard provider first-run experience — agent dir discovery now searches XDG_DATA_HOME, /opt, /usr/local paths; onboarding wizard auto-completes for non-wizard providers (ollama-cloud, deepseek, xai, kimi-k2.6) with provider_configured=True; wizard model field no longer hardcodes gpt-5.4-mini literal; session model resolver correctly handles unlisted active providers. (api/config.py, api/onboarding.py, api/routes.py) Closes #1019–#1023 [#1049]
• Cron session titles in sidebar — cron-launched sessions now display the human-friendly job name (from ~/.hermes/cron/jobs.json) instead of a generic "Cron Session" label. (api/models.py, api/routes.py) [#1050 @waldmanz]
• AIAgent reused per session — fixes Honcho first-turn injection — AIAgent is now cached per session_id so the agent's turn counter increments correctly across messages. Cache is evicted on session delete/clear. (api/config.py, api/routes.py, api/streaming.py) Closes #1039 [#1051 @qxxaa]
• Mermaid Google Fonts CSP violation suppressed — fontFamily:'inherit' in Mermaid themeVariables prevents @import url('fonts.googleapis.com') from being injected into diagram SVGs. (static/ui.js) Closes #1044 [#1054]
• bfcache layout and dropdown restore — pageshow+event.persisted handler re-syncs topbar, workspace panel, session list, and gateway SSE; also closes open composer dropdowns frozen by bfcache. _initResizePanels() removed from pageshow (bfcache preserves listeners). (static/boot.js) Closes #1045 [#1055]

v0.50.209 — 2026-04-25

Added

• Codex-style message queue flyout — messages typed while a stream is running now appear as a flyout card above the composer (same pattern as approval/clarify cards). Supports drag-to-reorder, inline edit, per-item model badge, Combine/Clear actions, and a collapsed pill outside the composer. Per-session DOM isolation via _queueRenderKeys[sid]/_queueCollapsed[sid] prevents cross-session bleed. Titlebar #appTitlebarSub chip shows live queue count. (static/ui.js, static/messages.js, static/style.css, static/i18n.js, static/index.html) Closes #965 [#1040 @24601]
• Inline HTML preview in workspace panel — .html and .htm files now render as live sandboxed iframes (sandbox="allow-scripts", no allow-same-origin) in the workspace file browser. A ?inline=1 parameter on /api/file/raw bypasses the usual attachment disposition; the server adds Content-Security-Policy: sandbox allow-scripts on inline HTML responses to prevent XSS when the URL is opened directly in a browser tab. (static/workspace.js, api/routes.py, static/index.html) Closes #779 [#1035 @bergeouss]
• Provider categories in setup wizard — the onboarding provider dropdown groups 10 providers into Easy Start / Open & Self-hosted / Specialized with <optgroup> sections. Includes Google Gemini, DeepSeek, Mistral, and xAI/Grok with correct current model defaults. (api/onboarding.py, static/onboarding.js) Closes #603 [#1036 @bergeouss]

Fixed

• Manual "Check for Updates" button in System settings — users can now trigger an update check immediately instead of waiting for the periodic background fetch. Error messages are sanitized before display. (static/panels.js, static/index.html, static/style.css) Closes #785 [#1033 @bergeouss]
• "Keep workspace panel open" toggle in Appearance settings — adds a persistent preference so the workspace panel opens automatically on each session if preferred. The toolbar X no longer clears the preference. (static/panels.js, static/boot.js) Closes #999 [#1034 @bergeouss]

Changed

• CSP allowlist for Cloudflare Access deployments — default-src and manifest-src now include https://*.cloudflareaccess.com, and script-src now includes https://static.cloudflareinsights.com. This unblocks Agent37-style deployments running behind Cloudflare Access without affecting vanilla self-hosters (the new origins are unreachable in non-Cloudflare environments). (api/helpers.py) [#1040 follow-up]

v0.50.207 — 2026-04-25

Added

• Live TPS stat in header — a monospace chip in the titlebar shows tokens per second during streaming, with HIGH watermark from the past hour. Emitted via SSE at 1 Hz during active streams; hidden when idle. (api/metering.py, api/streaming.py, static/messages.js, static/style.css) [#1005 @JKJameson]

Fixed

• Stale SSE events no longer pollute the new session's DOM on session switch — appendThinking() and appendLiveToolCard() now guard against events from a prior session's stream arriving after the user has switched sessions. Thinking card also auto-scrolls to top on completion so the response is immediately visible. (static/ui.js) [#1006 @JKJameson]
• Show agent sessions no longer shows empty/unimportable rows — state.db can contain agent session rows before any messages are written. The sidebar now filters those out consistently across both the regular /api/sessions path and the gateway SSE watcher. (api/agent_sessions.py, api/gateway_watcher.py, api/models.py) [#1009 @franksong2702]
• Three orphaned i18n keys removed from language dropdown — cmd_status, memory_saved, and profile_delete_title were placed outside any locale block in static/i18n.js, causing them to appear as invalid language options. (static/i18n.js) [#1010 @bergeouss]
• Cron panel UX polish — Resume button SVG now uses a ▶| icon to distinguish it from Run; toast overlap fixed with z-index on the header; running-state badge with spinner shows during active jobs; _cronRunningPoll clears correctly on panel close. (static/panels.js, static/index.html, static/style.css, static/i18n.js) [#1011 @bergeouss]
• Create Folder and Add as Space from the browser — users can now create directories and immediately register them as workspace spaces without SSH access; server validates paths against blocked roots before mkdir. (api/routes.py, static/ui.js, static/panels.js, static/i18n.js) [#1018 @bergeouss]
• Model-not-found errors now show a helpful message — when a provider returns a 404 (e.g. Qwen model not available), the error is classified and a user-friendly hint appears instead of a raw HTML page. All 6 locales covered. (api/streaming.py, static/messages.js, static/i18n.js) [#1022 @bergeouss]
• Session attention indicators moved to right-side actions slot — streaming spinners and unread dots no longer sit before the session title, avoiding title shifts. Running/unread rows hide the timestamp; idle/read rows keep right-aligned timestamps. Date group carets now point down/right correctly. Pinned group no longer repeats the star icon per row. (static/sessions.js, static/style.css) [#1024 @franksong2702]
• Session sidebar dates now use the last real message time — sorting, grouping, and relative timestamps prefer last_message_at derived from the last non-tool message instead of metadata-only updated_at, so changing session settings doesn't move old conversations to Today. (api/models.py, api/routes.py) [#1024 @franksong2702]
• Running indicators appear immediately after send — the sidebar now treats the active local busy session and local in-flight sessions as streaming while /api/sessions catches up. (static/messages.js, static/sessions.js) [#1024 @franksong2702]
• Large session switching and reload no longer block on cold model-catalog resolution — GET /api/session?messages=0 now parses only the JSON metadata prefix; metadata-only loads skip the full-session LRU cache; the frontend lazy fetch passes resolve_model=0; hard reload no longer waits for populateModelDropdown(). (api/models.py, api/routes.py, static/boot.js, static/sessions.js, static/ui.js) [#1025 @franksong2702]
• Auto title generation hardened for reasoning models — title generation now uses a 512-token reasoning-safe budget, retries once with 1024 tokens on empty content or finish_reason: length, and preserves the underlying failure reason in title_status when falling back to a local summary. (api/streaming.py) [#1026 @franksong2702]

v0.50.206 — 2026-04-25

Fixed

• Uploaded files now resolve to their full workspace path in agent context — drag-and-drop and paperclip file uploads were correctly saved to the workspace, but the agent received only the bare filename (e.g. photo.jpg) in the message context rather than an absolute path. The agent could not call read_file or vision_analyze without a full path. uploadPendingFiles() now returns {name, path} objects from the /api/upload response (data.path was always returned but never threaded through). The agent message uses the full path; all display surfaces (badges, session history, INFLIGHT state, POST body) continue showing only the bare filename. (static/ui.js, static/messages.js) Closes #996. [#997]

v0.50.205 — 2026-04-24

Fixed

• Workspace add: allow external paths not under home directory — adding a workspace path such as /mnt/d/Projects (WSL) or any directory outside $HOME was blocked by a circular dependency: resolve_trusted_workspace() required the path to already be in the saved workspace list, but saving it required passing the same check. A new validate_workspace_to_add() function is now used by /api/workspaces/add — it only rejects non-existent paths, non-directories, and known system roots. The stricter resolve_trusted_workspace() continues to gate actual file read/write operations within a workspace. (api/workspace.py, api/routes.py) Closes #953. [#991]

v0.50.204 — 2026-04-24

Fixed

• Docker: HERMES_HOME corrected from /root/.hermes to /home/hermes/.hermes — docker-compose.two-container.yml and docker-compose.three-container.yml both set HERMES_HOME=/root/.hermes and mounted the shared hermes-home volume to /root/.hermes. The nousresearch/hermes-agent image drops privileges to a hermes user (uid=10000) via gosu, after which /root is mode 700 and inaccessible — causing mkdir: cannot create directory '/root': Permission denied on every startup. Fixed to use /home/hermes/.hermes throughout. (docker-compose.two-container.yml, docker-compose.three-container.yml) Closes #967. [#989]

v0.50.203 — 2026-04-24

Fixed

• Queue drain race condition — drain the correct session after cross-session stream completion — setBusy(false) was draining S.session.session_id (the currently viewed session) rather than the session that just finished streaming. When the user switched sessions mid-stream, queued follow-up messages for the original session were silently dropped. A new _queueDrainSid variable is set to activeSid just before calling setBusy(false) in all stream terminal handlers; setBusy() reads it once and clears it. (static/messages.js, static/ui.js, tests/test_regressions.py) By @24601. [#964]

v0.50.202 — 2026-04-24

Fixed

• Throttle inflight localStorage persist to prevent GC crash — saveInflightState() was called on every token, doing JSON.parse + mutate + JSON.stringify + localStorage.setItem on the full inflight state map. At 60 tok/s with a 10KB messages array this produced ~36MB of JSON churn per second, the primary GC pressure source causing Chrome renderer crashes (error codes 4/5). A _throttledPersist() wrapper now batches writes to at most once per 2 seconds. State transitions (done/apperror/cancel/error) still flush synchronously so no more than 2s of progress is lost on a crash. (static/messages.js) By @24601. [#972]

v0.50.201 — 2026-04-24

Fixed

• Streaming render cleanup: call clearTimeout at all _pendingRafHandle sites — PR #966's render-throttling logic uses setTimeout(→rAF) when within the 66ms budget window, so _pendingRafHandle can hold a setTimeout ID rather than a requestAnimationFrame ID. All four cleanup sites only called cancelAnimationFrame(), which is a no-op for setTimeout handles, leaving stale callbacks that could fire after stream finalization. Fixed to call both clearTimeout() and cancelAnimationFrame() (each is a no-op on the other's handle type). (static/messages.js) [#985]

v0.50.200 — 2026-04-24

Changed

• Session render cache — skip O(n) rebuild on back-navigation — renderMessages() now caches rendered HTML per session (keyed by session_id + message count). Switching back to a previously-rendered session serves the cached DOM instantly instead of running a full markdown parse, Prism highlight, and KaTeX pass over every message. Cache is limited to 8 sessions and 300KB of rendered HTML per entry. Active streaming sessions always bypass the cache. (static/ui.js) By @24601. [#963]

v0.50.199 — 2026-04-24

Fixed

• Streaming renderer crash under GC pressure — _scheduleRender() previously used requestAnimationFrame (up to 60fps), but each DOM update takes 50–150ms on large sessions. During GC pauses, rAF callbacks accumulated and then fired sequentially, blocking the main thread for seconds and crashing the renderer (Chrome error codes 4/5, ERR_CONNECTION_RESET). The render rate is now capped at ~15fps (66ms min interval) via a setTimeout → requestAnimationFrame chain. Stream cleanup now calls both clearTimeout() and cancelAnimationFrame() so the handle is correctly cancelled regardless of which path scheduled it. (static/messages.js) By @24601. [#966]

v0.50.198 — 2026-04-24

Fixed

• _accepts_gzip() hardened for test harness — handler.headers.get() now uses getattr(handler, 'headers', None) so any synthetic handler without a headers attribute (including the _FakeHandler used in session-compress tests) no longer throws AttributeError. (api/helpers.py)
• Stale test assertions updated post-#959 — two static-analysis assertions in test_issue401.py and test_regressions.py referenced minified JS string patterns that PR #959 reformatted; updated to accept either form. (tests/test_issue401.py, tests/test_regressions.py) [#981]

v0.50.197 — 2026-04-24

Changed

• Complete Traditional Chinese (zh-Hant) translations — adds full zh-Hant locale coverage (300+ translation entries) across all UI sections. Fixes mixed Simplified/Traditional character inconsistency in the existing zh translations. Also adds English-fallback entries to zh/ru/es/de for newly-added session management and settings keys (session_archive, session_pin, session_duplicate, settings_dropdown_*, etc.). (static/i18n.js) By @ruxme. [#954]

v0.50.196 — 2026-04-24

Fixed

• Fast conversation switching with metadata-first session load — switching between conversations in the sidebar now does a two-phase load: phase 1 fetches only metadata (title, model, timestamps) instantly, then phase 2 lazily loads the full message history. Backend Session.save() reorders JSON fields so metadata appears before the messages array, enabling a 1KB prefix-read path for small sessions. JSON responses over 1KB are gzip-compressed (4x smaller for large histories). Includes try/catch in _ensureMessagesLoaded so network errors show "Failed to load" rather than a stuck "Loading conversation…" state. (api/models.py, api/helpers.py, api/routes.py, static/sessions.js) By @JKJameson. [#959]

v0.50.195 — 2026-04-24

Fixed

• Auth sessions now persist across server restarts — previously _sessions was an in-memory dict, so every process restart (launchd, systemd, container recycle) invalidated all browser sessions and forced users to log in again. Sessions are now atomically persisted to STATE_DIR/.sessions.json (0600 permissions) via a temp-file + os.replace() write pattern. Expired sessions are pruned on load. Corrupt or missing session files start fresh without crashing. (api/auth.py, tests/test_auth_session_persistence.py) By @24601. [#962]

v0.50.194 — 2026-04-24

Fixed

• Prevent dropped characters in incremental streaming-markdown path — detects parser/text prefix desync in _smdWrite() (which can occur after stream sanitization strips content mid-stream) and rebuilds the parser from the full current display text rather than continuing to slice from a stale offset. Adds _smdWrittenText tracking variable for accurate prefix-alignment checks. (static/messages.js) By @bsgdigital. [#960]

v0.50.193 — 2026-04-24

Fixed

• Strip malformed DSML function_calls tags from DeepSeek/Bedrock responses — extends the existing XML tool-call stripping logic to handle DeepSeek's DSML-prefixed variants (<｜DSML｜function_calls>, <｜DSML |function_calls, and fragmented <｜DSML | tokens) in backend (api/streaming.py), live streaming (static/messages.js), and settled render (static/ui.js). Prevents raw function-call XML from leaking into message content. (api/streaming.py, static/messages.js, static/ui.js) By @bsgdigital. [#958]

v0.50.192 — 2026-04-24

Changed

• defer attribute added to all local script tags — scripts already sit at the end of <body> so this is largely a belt-and-suspenders improvement, but defer makes the intent explicit and allows browsers to start parsing before the DOM is fully ready without blocking. Execution order preserved (defer is order-preserving per spec). (static/index.html) By @ruxme. [#951]

v0.50.191 — 2026-04-24

Fixed

• WebUI sessions now pass platform='webui' to Hermes Agent — previously all browser-originated sessions passed platform='cli', causing the agent to inject CLI-specific guidance ("avoid markdown, use plain text") that degraded WebUI output quality. Changed to platform='webui' in all three AIAgent call sites (api/streaming.py, api/routes.py). 'webui' has no entry in PLATFORM_HINTS so no conflicting platform guidance is injected. Includes regression tests. (api/streaming.py, api/routes.py, tests/test_webui_platform_hint.py) By @starship-s. [#948]

v0.50.190 — 2026-04-24

Fixed

• .venv discovery in _discover_python() — adds .venv/bin/python (Linux/macOS) and .venv/Scripts/python.exe (Windows) alongside the existing venv/ paths, fixing issue #938 where setups using a .venv directory failed silently to locate the Hermes agent interpreter. (api/config.py) By @xingyue52077. Closes #938. [#949]

v0.50.189 — 2026-04-24

Fixed

• CSP: explicit manifest-src 'self' directive — adds manifest-src 'self' to the Content-Security-Policy header. Browsers fall back to default-src when manifest-src is absent (functionally correct), but being explicit satisfies strict CSP audits and avoids browser-specific deviations. Includes regression test. (api/helpers.py, tests/test_pwa_manifest_csp.py) By @24601. [#961]

v0.50.189 — 2026-04-24

Fixed

• CSP: explicit manifest-src 'self' directive — adds manifest-src 'self' to the Content-Security-Policy header. Browsers fall back to default-src when manifest-src is absent (functionally correct), but the explicit directive satisfies strict CSP audits and avoids any browser-specific deviation. Includes regression test. (api/helpers.py, tests/test_pwa_manifest_csp.py) By @24601. [#961]

v0.50.188 — 2026-04-24

Fixed

• /btw command: corrected SSE endpoint — attachBtwStream() was connecting to /api/stream (which has never existed), causing every /btw invocation to get a 404 and produce no answer. Fixed to /api/chat/stream. Also aligned the EventSource constructor to use URL() + withCredentials:true for consistency with the rest of static/messages.js. (static/messages.js) By @bergeouss. Closes #945. [#950]

v0.50.187 — 2026-04-24

Fixed

• Rail/hamburger breakpoint gap closed — at 641–767px the rail was hidden (required ≥768px) and the hamburger was also hidden (only ≤640px), leaving an awkward in-between zone. Rail breakpoint moved to ≥641px so the rail appears alongside the persistent sidebar at medium widths. Mobile slide-in behavior (hamburger toggle, overlay scrim) is unchanged at ≤640px. (static/style.css) [#956]

v0.50.186 — 2026-04-24

Changed

• Three-column layout with left rail + main-view migration — unifies the shell into a rail (48px, desktop-only) + sidebar + main-view canvas matching the hermes-desktop reference. Every per-item detail/edit surface (skills, tasks, workspaces, profiles, memory) now lives in a dedicated #mainX container with consistent headers, empty states, and action buttons. Settings moves out of a modal overlay into a full main-view page (ESC closes it). YAML frontmatter renders in a collapsible <details> block in skill detail. Toasts repositioned to top-right with theme-aware success/error/warning/info variants. Composer workspace chip split into files-icon + label buttons. .settings-menu → .side-menu / .side-menu-item (shared by memory and settings panels). Mobile: hamburger in titlebar, slide-in sidebar. New i18n keys across en/ru/es/de/zh/zh-Hant for all new form labels. 9 new regression tests. (static/index.html, static/style.css, static/panels.js, static/boot.js, static/sessions.js, static/ui.js, static/i18n.js, tests/test_settings_navigation_and_detail_refresh.py) By @aronprins. [#899]

v0.50.185 — 2026-04-24

Fixed

• /btw stream handler hardened — _streamDone=true now set before src.close() in done and apperror handlers (defensive ordering); _ensureBtwRow() in done gated on session match (S.session.session_id === parentSid) to prevent btw bubble leaking into a different session if the user switches mid-stream; stream_end handler also sets _streamDone=true for defense-in-depth. 14 new regression tests added. (static/messages.js, tests/test_reasoning_chip_btw_fixes.py) [#935]
• /reasoning toast aligned with BRAIN prefix — success toast now reads 🧠 Reasoning effort: <level> consistent with the command's other toasts. (static/commands.js) [#939]
• Bootstrap Python discovery finds .venv/ layout — discover_launcher_python now checks both venv/ and .venv/ inside the agent directory, covering installations that use a leading-dot venv layout. (bootstrap.py) [#941]

v0.50.184 — 2026-04-24

Fixed

• Reasoning chip dropdown now opens correctly — the dropdown was placed inside .composer-left which has overflow-y: hidden, clipping the upward-opening menu entirely. Moved #composerReasoningDropdown outside to sit alongside the model/profile/workspace dropdowns and added _positionReasoningDropdown() for consistent chip-aligned positioning. Z-index raised to 200 to match other composer dropdowns. (static/index.html, static/style.css, static/ui.js)
• Reasoning chip icon is now a monochrome SVG — replaced the 🧠 emoji in the label with a stroke="currentColor" brain-outline SVG matching the style of all other composer chips. (static/index.html, static/ui.js)
• /reasoning <level> now immediately updates the chip — previously called syncReasoningChip() which re-applied the stale cached value. Now calls _applyReasoningChip(eff) directly with the server-confirmed effort level. (static/commands.js)
• /btw answer no longer vanishes after rendering — onerror was firing when the server cleanly closed the SSE connection after stream_end, removing the just-rendered answer bubble. A _streamDone flag now prevents onerror from wiping the row after a successful stream. Also added _ensureBtwRow() call in done handler so the bubble renders even if no token events arrived. (static/messages.js) Closes #933.

Added

• Session attention indicators in the sidebar — the session list now shows a spinning indicator while a session is actively streaming (even in the background), an unread dot when a session has new messages the user hasn't seen, and a right-aligned relative timestamp ("2m ago", "Yesterday") next to every session title. Streaming state is computed server-side from the live STREAMS registry so it's accurate across tabs and after server restart. The unread count is tracked client-side in localStorage and cleared automatically when the active session's stream settles. Pinned-star indicator moved into the title row with a fixed 10×10 box for consistent alignment. Includes a 5 s polling loop that activates only while sessions are streaming, and a 60 s timer to keep relative timestamps fresh. (api/models.py, static/sessions.js, static/messages.js, static/style.css) Closes #856. Co-authored by @franksong2702.

Fixed

• Nous static models now use explicit @nous: prefix — the four hardcoded "(via Nous)" models (Claude Opus 4.6, Claude Sonnet 4.6, GPT-5.4 Mini, Gemini 3.1 Pro Preview) now carry @nous: prefix IDs, matching the format of live-fetched Nous models. Previously they used slash-only IDs that relied on the portal provider guard; the explicit prefix routes them through the same bulletproof @provider:model branch and eliminates 404 errors on those entries. (api/config.py, tests/test_nous_portal_routing.py)

Added

• Workspace path autocomplete in Spaces — the "Add workspace path" field in the Spaces panel now suggests trusted directories as you type, supports keyboard navigation plus Tab completion, and keeps hidden directories out of the list unless the current path segment starts with .. Suggestions are limited to trusted roots (home, saved workspaces, and the boot default workspace subtree) and never enumerate blocked system roots. (api/routes.py, api/workspace.py, static/panels.js, static/style.css) (partial for #616)

[v0.50.232] — 2026-04-28

Fixed

• Model chip fuzzy-match false positive — _findModelInDropdown() step-3 fuzzy fallback was stripping the trailing version segment and matching via startsWith(base) || includes(base), causing gpt-5.5 to resolve to @nous:openai/gpt-5.4-mini (both start with gpt.5). The fix uses the full normalized target as the prefix when base.length > 4 && base !== target, only falling back to the stripped base for bare roots (≤4 chars) where the strip was a no-op. (static/ui.js) (#1188)
• openai-codex not detected in model picker — OPENAI_API_KEY now also registers the openai-codex provider group in the env-var fallback path, so users who have Codex OAuth set up no longer need a manual config.yaml edit to see the picker entries. Note: OAuth-authenticated users are already detected via hermes_cli.auth; this fixes the env-var-only fallback path. (api/config.py) (#1189)
• Workspace files blank after second empty-session reload — the ephemeral-session guard in boot.js was calling localStorage.removeItem('hermes-webui-session'), which caused the second reload to fall into the no-saved-session path that never calls loadDir(). Removing that line keeps the session key so every reload follows the same loadSession → loadDir path. (static/boot.js) (#1196)
• Session timestamps wrong when client and server clocks differ — the session list's relative time labels and message-footer timestamps now use a server-clock approximation (_serverNowMs()) derived from the server_time field returned by /api/sessions. Fractional-hour timezone offsets (India +0530, Nepal +0545, etc.) are handled correctly via offset-minutes arithmetic. (api/routes.py, static/sessions.js) (#1144, @bergeouss)

[v0.50.231] — 2026-04-28

Fixed

• macOS /etc symlink bypass in workspace blocked-roots — on macOS, /etc, /var, and /tmp are symlinks to /private/etc etc. _workspace_blocked_roots() now materialises both the literal and Path.resolve() forms of every blocked root, and a new _is_blocked_system_path() helper applies the check with /var/folders and /var/tmp carve-outs so pytest tmp_path_factory paths and other legitimate per-user tmp dirs remain registerable as workspaces. (api/workspace.py, api/routes.py) (#1186)
• Workspace panel stuck closed after empty-session reload — a regression from #1182: when a user had the workspace panel open and reloaded the page on an empty/new session, the panel was force-closed and the toggle disabled. syncWorkspacePanelState() now only force-closes in 'preview' mode (which requires a session); 'browse' mode renders the panel chrome with a no-workspace placeholder. Both boot paths restore the user's localStorage panel preference before the sync call. (static/boot.js) (#1187)
• Fenced code content leaking into markdown passes — large tool outputs with diff/patch/log content (lines starting with -, +, *, # inside code blocks) were having <ul>/<li>/<h> tags injected by the list/heading regexes, breaking </pre> closure and corrupting subsequent message rendering. The fix keeps fenced blocks stashed as \x00P<n>\x00 tokens through ALL markdown passes and restores them AFTER lists/headings/tables, so those regexes never see the rendered HTML. (static/ui.js) (#1154, @bergeouss)

[v0.50.230] — 2026-04-27

Fixed

• No disk write for empty sessions — new_session() no longer eagerly writes an empty JSON file to disk. The session lives in the in-memory SESSIONS dict only; the first disk write happens at the natural "this is now a real session" moment (first user message via /api/chat/start, or explicit s.save() in the btw/background-agent paths). Eliminates orphan sessions/*.json files that accumulated on every page reload, New Conversation click, or onboarding pass without sending a message. Crash-safety: if the process exits between create and first message, the session is lost — since it had no messages, there is nothing to lose. (api/models.py) (#1171 follow-up, #1184)

[v0.50.229] — 2026-04-27

Performance

• Session switch parallelization — directory pre-fetches use Promise.all() (N×RTT → 1×RTT); git status/ahead/behind run in parallel via ThreadPoolExecutor(max_workers=3); loadDir() and highlightCode() overlap on the idle path. (api/workspace.py, static/sessions.js, static/workspace.js) (#1158, @jasonjcwu)

Fixed

• Message pagination for long conversations — sessions with more than 30 messages load the most-recent 30 on switch; older messages load on scroll-to-top or the "↑ load older" indicator. Stale-response race in _loadOlderMessages closed; all undo/retry/compress/done paths reset pagination state. (api/routes.py, static/sessions.js, static/ui.js, static/commands.js, static/i18n.js) (#1158, @jasonjcwu)
• Ephemeral untitled sessions never appear in sidebar — empty Untitled sessions are now suppressed immediately rather than surfacing for 60 seconds. Both the index-path and full-scan fallback filters are consistent; boot path skips restoring a zero-message session from storage. (api/models.py, static/boot.js, static/sessions.js) (#1182)
• iOS Safari auto-zoom on input focus — inputs, textareas, and selects on touch devices now have a minimum font-size: max(16px, 1em) via @media (hover:none) and (pointer:coarse), preventing iOS from zooming in on focus. Accessibility-safe: user's OS font preference is respected when it exceeds 16px. (static/style.css) (#1167, #1180)

[v0.50.229] — 2026-04-27

Performance

• Session switch parallelization — directory pre-fetches now use Promise.all() (N×RTT → 1×RTT); git status/ahead/behind subprocesses run in parallel via ThreadPoolExecutor(max_workers=3); loadDir() and highlightCode() run concurrently on idle path. Session switches with expanded workspace dirs are measurably faster on high-latency connections. (api/workspace.py, static/sessions.js, static/workspace.js) (#1158, @jasonjcwu)

Added

• Message pagination for long conversations — sessions with more than 30 messages now load the most-recent 30 on switch; older messages load on scroll-to-top or via the "↑ load older" indicator at the top of the message list. All undo/retry/compression paths reset pagination state correctly. (api/routes.py, static/sessions.js, static/ui.js, static/commands.js) (#1158, @jasonjcwu)

[v0.50.228] — 2026-04-27

Fixed

• Raw <pre> blocks preserved in markdown renderer — the inline <code> rewrite pass in renderMd() no longer processes content inside raw <pre> blocks, preventing multiline HTML code blocks from being degraded to backtick strings. (static/ui.js) (#1150, @bsgdigital)
• Live model race silently overwrites session model — syncTopbar() now skips the destructive fallback-to-first-model path while a live model fetch is in flight for the active provider; _addLiveModelsToSelect() re-applies the session model once the fetch completes, so models only present in the live catalog (e.g. Kimi K2) are never silently replaced. (static/ui.js) (#1169)
• Tool card output truncated at 220 chars and unscrollable — JS truncation threshold raised to 800 chars; CSS overflow:auto added to .tool-card.open .tool-card-detail so the inner <pre> scroll works correctly; <pre> max-height raised to 360 px. (static/ui.js, static/style.css) (#1170)
• New Conversation creates empty session when already on empty session — clicking the New Conversation button or pressing Cmd/Ctrl+K when the current session has zero messages now focuses the composer instead of creating another empty Untitled session. (static/boot.js) (#1171)
• .env file corruption from concurrent WebUI and CLI/Telegram writes — removes the unlocked duplicate _write_env_file() in api/onboarding.py that bypassed _ENV_LOCK; rewrites the shared version to preserve comments, blank lines, and original key order rather than rebuilding from a sorted dict. (api/onboarding.py, api/providers.py) (#1164, @bergeouss)

[v0.50.227] — 2026-04-27

Fixed

• Korean locale label and missing Settings descriptions — ko._label normalized to '한국어'; ten Settings pane description keys that were falling back to English are now fully translated. (static/i18n.js) (#1138)
• Workspace trust: alternative home roots — resolve_trusted_workspace() now checks the home-directory allowance before the blocked-roots loop, letting symlinked home paths (e.g. /var/home/user) pass through correctly. (api/workspace.py) (#1165)
• Custom config-file provider models — the provider-discovery loop now includes entries defined under providers: in config.yaml, so custom providers no longer silently skip the model list. Shared _PROVIDER_MODELS list is deep-copied before mutation to prevent cross-session bleed. (api/config.py) (#1161)
• Save Settings button missing from System pane — the System settings pane now has a Save Settings button so password changes and other system fields can actually be submitted. (static/index.html) (#1146)
• Per-job cron completion dot — the Tasks panel now shows a pulsing green dot on each cron job that has a new unread completion; the dot clears only when that specific job's detail view is opened, not on any panel-level navigation. (static/panels.js, static/style.css) (#1145)
• Hide cron agent sessions from sidebar by default — sessions created by the cron scheduler (source cron or session_id prefix cron_) are now filtered out of the default session list in both the index path and the full-scan path; imported gateway cron sessions are also hidden via read_importable_agent_session_rows(). (api/models.py, api/agent_sessions.py) (#1143)
• Symlink cycle detection in workspace file browser — intentional symlinks within the workspace root are now allowed; only self-referencing or ancestor-pointing symlinks are blocked. Symlink entries render with type, target, and is_dir. (api/workspace.py) (#1149)
• /status command enriched — output now includes session id, profile, model+provider, workspace, personality, start time, per-turn token counts, estimated cost, and agent running state. i18n keys added for all locales. (api/session_ops.py, static/commands.js, static/i18n.js) (#1156)
• Per-turn cost display on assistant bubbles — each assistant message footer now shows the token delta and estimated cost for that turn, computed from the cumulative done SSE usage minus the previous turn's total. (static/messages.js, static/ui.js) (#1159)
• Auto-title: skip generic fallback — when auxiliary title generation fails and the local fallback would only produce "Conversation topic", the existing provisional title is kept instead of persisting the generic placeholder. (api/streaming.py) (#1157)
• Sidebar session rename first-Enter revert — double-click inline rename now keeps the new title after the first Enter keypress; finish() is idempotent via a guard flag and _renamingSid stays locked until the full async path (success, failure, or cancel) completes. (static/sessions.js) (#1162)
• Auto-compression renders as transient card — automatic context compression now renders as a collapsible compression card instead of injecting a fake *[Context was auto-compressed]* assistant message; preserved task-list user messages also render as sub-cards. (static/messages.js, static/ui.js, static/i18n.js) (#1142)

[v0.50.226] — 2026-04-27

Fixed

• App titlebar restored to rail-era centered layout — removes the TPS metering chip from the top bar, centers the title and subtitle, and restores the message count in the subtitle slot. Queue state no longer overrides the titlebar subtitle slot. (static/index.html, static/panels.js, static/style.css, static/ui.js, tests/test_app_titlebar_restore.py)

[v0.50.183] — 2026-04-24

Added

• /btw slash command — ask an ephemeral side question using current session context without adding to history. Creates a hidden session, streams the answer in a visually distinct bubble, then discards the session. Includes attachBtwStream() SSE consumer and POST /api/btw route. (api/routes.py, api/background.py, static/commands.js, static/messages.js, static/style.css)
• /background slash command — run a prompt in a parallel background agent without blocking the active conversation. Frontend polls GET /api/background/status for results and displays completed answers inline. Includes badge indicator in composer footer. (api/routes.py, api/background.py, static/commands.js, static/messages.js, static/index.html)
• Undo button on last assistant message — surfaced as an ↩ icon on the last assistant message, calling the existing /undo command for discoverability. (static/ui.js)
• Reasoning effort chip in composer — visual chip to set reasoning effort level from the composer footer without typing a command. (static/ui.js, static/index.html, static/style.css)

Fixed

• Background task completion hook wired — complete_background() was never called after a background agent finished, so tasks stayed in status="running" forever and polling always returned []. Fixed by wrapping _run_agent_streaming in _run_bg_and_notify which extracts the last assistant message and signals the tracker. Also fixed get_results() to retain in-flight tasks during polls so concurrent tasks are not dropped. (api/background.py, api/routes.py, tests/test_background_tasks.py)
• Ephemeral sessions correctly skip persistence — added return after the ephemeral done event in _run_agent_streaming(), preventing ephemeral session state from being written to disk after stream completion. (api/streaming.py)

Co-authored by @bergeouss.

[v0.50.181] — 2026-04-24

Changed

• Vendor streaming-markdown@0.2.15 — self-hosts the incremental markdown parser instead of loading it from jsDelivr CDN. The library (12.6 KB) is committed to static/vendor/smd.min.js so the app works fully offline / air-gapped, and the exact bytes are pinned in version control. SHA-384 hash preserved in an HTML comment for manual audit. (static/vendor/smd.min.js, static/index.html) Co-authored by @bsgdigital.

[v0.50.180] — 2026-04-23

Added

• Incremental streaming markdown via streaming-markdown — replaces the per-animation-frame full innerHTML re-render with an incremental DOM-building parser. During streaming, only new character deltas are fed to the parser per frame (_smdWrite()), eliminating DOM thrashing and improving rendering smoothness. Prism.js / KaTeX state no longer gets reset mid-stream. Falls back to the existing renderMd() path when the library is unavailable. (static/messages.js, static/index.html) Co-authored by @bsgdigital.

[v0.50.179] — 2026-04-23

Fixed

• Onboarding wizard clobbering CLI users' config after server restart — CLI-configured users (who set up via hermes model / hermes auth) had no onboarding_completed flag in settings.json. After a git branch switch or server restart, verify_hermes_imports() could momentarily return imports_ok=False, making chat_ready=False and causing the wizard to reappear with a destructive dropdown default (openrouter). Fixed by writing onboarding_completed: True to settings.json the first time config_auto_completed evaluates to True, so the flag survives future transient import failures. (api/onboarding.py) Co-authored by @bsgdigital.

[v0.50.177] — 2026-04-23

Fixed

• Settings dialog and message controls unusable on mobile — three mobile usability fixes: (1) settings tab strip replaced by a native <select> dropdown on narrow viewports, panel goes full-width; (2) provider card Save/Remove buttons become icon-only on mobile so the API key input fills the available width; (3) message timestamps, copy, and edit buttons are always visible on touch screens (no hover state on mobile). (static/index.html, static/panels.js, static/style.css) Co-authored by @bsgdigital.

[v0.50.178] — 2026-04-23

Added

• PWA support — installable as a standalone app — adds a Web App Manifest (manifest.json) and a minimal service worker (sw.js) with cache-first strategy for app shell assets and network-bypass for all /api/* and /stream endpoints. Cache name auto-busts on every deploy via git-derived version injection. Enables "Add to Home Screen" on Android, iOS, and desktop Chrome without any offline API response caching (live backend always required). (static/manifest.json, static/sw.js, static/index.html, api/routes.py) Closes #685. Co-authored by @bsgdigital.

[v0.50.176] — 2026-04-23

Fixed

• Duplicate model dropdown entries when CLI default matches live-fetched model — _addLiveModelsToSelect() now normalises IDs before the dedup check (strips @provider: prefix using indexOf+substring to preserve multi-colon Ollama tag suffixes like qwen3-vl:235b-instruct, strips namespace prefix, unifies separators). (static/ui.js) Closes #907.
• New Chat uses stale default model after saving Preferences without reload — window._defaultModel is now updated in _applySavedSettingsUi() so newSession() picks up the newly saved default immediately. (static/panels.js) Closes #908.
• Injected CLI default model shows raw lowercase label — new _get_label_for_model() helper looks up the model's formatted label from existing catalog groups before falling back to title-casing the bare ID. (api/config.py) Closes #909.

[v0.50.175] — 2026-04-23

Fixed

• Session persistence hardened against concurrent write races — all session-mutation paths (streaming success/error/cancel, periodic checkpoint, HTTP endpoints for title/personality/workspace/clear/pin/archive/project) now hold a per-session _agent_lock during in-memory mutation and Session.save(). The checkpoint thread is stopped and joined before the final save, preventing stale object clobbers. Session.save() uses fsync + atomic rename with a pid+thread_id tmp suffix. _write_session_index() gets a dedicated _INDEX_WRITE_LOCK so disk I/O runs outside the global LOCK, reducing head-of-line blocking. Context compression now runs the LLM call outside the lock with a stale-edit check (409) on write-back. (api/streaming.py, api/models.py, api/routes.py, api/session_ops.py, api/config.py) Closes #765. Co-authored by @starship-s.

[v0.50.174] — 2026-04-23

Fixed

• Interleaved streaming order (Text → Thinking → Tool → Text) — after a tool call completes, new text tokens now create a new DOM segment below the tool card instead of updating the old segment above it. Adds segmentStart/_freshSegment flags to track segment boundaries; scopes the streaming cursor to the last live assistant segment only; adds a 3-dot waiting indicator below each tool card; fixes appendLiveToolCard/appendThinking anchor logic for multi-tool sequences. (static/messages.js, static/ui.js, static/style.css) Co-authored by @bsgdigital.

[v0.50.173] — 2026-04-23

Fixed

• Ordered list items always showed "1." regardless of position — when LLMs output numbered lists with blank lines between items, the paragraph-splitter in renderMd() placed each item in its own <ol> container, causing every <ol> to restart at 1. Fixed by emitting value="N" on each <li> so the correct ordinal is preserved even when items are split across multiple <ol> wrappers. (static/ui.js) Closes #886. Co-authored by @bsgdigital.

[v0.50.172] — 2026-04-23

Fixed

• Stop Generation preserves partial streamed content — clicking Stop Generation previously discarded all text the agent had produced, showing only "Task cancelled.". The server now accumulates streamed tokens in a per-stream buffer and persists any partial assistant content to the session when a cancel fires. Thinking/reasoning blocks (<think>...</think>, including unclosed tags — the common cancel-mid-reasoning case) are stripped before saving. The partial content is flagged _partial: true and kept in conversation history so the model can continue from it on the next user message. (api/config.py, api/streaming.py) Closes #893.

[v0.50.171] — 2026-04-23

Fixed

• Nous default model picker shows correct selection and saves no longer freeze — two bugs for Nous/portal provider users: (1) Settings → Preferences → Default Model picker showed blank after saving because set_hermes_default_model() wrote a bare resolved form that didn't match the @nous:... option values in the dropdown; fixed by using _applyModelToDropdown()'s smart normalising matcher to find the right option without requiring an exact string match. (2) Every Settings save triggered a blocking live-fetch from the provider API (~5 s freeze) because set_hermes_default_model() called get_available_models() before returning; the function now returns a lightweight {ok, model} ack and invalidates the TTL cache instead. Config.yaml always stores the CLI-compatible bare/slash form (e.g. anthropic/claude-opus-4.6) so CLI users on the same install are unaffected. (api/config.py, static/panels.js) Closes #895.
• Cross-namespace models (minimax/, qwen/) no longer 404 for Nous users — resolve_model_provider() checked the config_base_url branch before the portal-provider guard. Nous always has a base_url in config, so known cross-namespace prefixes were stripped before reaching the portal check. Portal providers are now checked first so all slash-prefixed model IDs reach Nous intact. (api/config.py) Closes #894.

[v0.50.170] — 2026-04-23

Fixed

• Settings default model picker shows live-fetched models — the Settings → Preferences → Default Model dropdown previously only showed static models from _PROVIDER_MODELS. It now calls _fetchLiveModels() via the new _addLiveModelsToSelect() helper, consistent with the chat-header dropdown. New sessions also respect the saved default model (window._defaultModel) instead of always reading the chat-header value, which reflected the previous session's model. (static/ui.js, static/sessions.js, static/panels.js) Closes #872. Co-authored by @bergeouss.

[v0.50.163] — 2026-04-23

Fixed

• Message ordering after task cancellation — cancelling a stream while the agent is responding no longer causes subsequent responses to appear above the "Task cancelled." marker. The cancel handler now fetches the authoritative message list from the server (same as the done event), and the server persists the cancel message to the session so both paths stay in sync. Falls back to the previous local-push behaviour if the API call fails. (api/streaming.py, static/messages.js) (@mittyok, #882)

[v0.50.161] — 2026-04-23

Fixed

• CI: test_set_key_writes_to_env_file no longer flaky in full-suite ordering — two test files (test_profile_env_isolation.py, test_profile_path_security.py) were calling sys.modules.pop("api.profiles") without restoring the module reference, permanently removing api.profiles from the module cache and corrupting state for subsequent tests. Replaced with monkeypatch.delitem(sys.modules, ...) so the module reference is restored automatically after each test. (tests/test_profile_env_isolation.py, tests/test_profile_path_security.py)
• api/providers.py _write_env_file() lock and mode fixes — moved file I/O (mkdir + write) inside the _ENV_LOCK block to prevent TOCTOU race between concurrent key-save requests; replaced write_text() with os.open(..., O_CREAT, 0o600) so new .env files are created owner-read/write-only from the first byte. (api/providers.py)

[v0.50.160] — 2026-04-23

Fixed

• CI: provider panel i18n keys now present in all 6 locales — es, de, zh, ru, zh-Hant were missing the 19 provider panel keys added in v0.50.159, causing locale parity test failures on CI after every push to master. (static/i18n.js)

[v0.50.159] — 2026-04-23

Added

• Provider key management in Settings — new "Providers" tab lets users add, update, or remove API keys for direct-API providers without editing .env files. Covers Anthropic, OpenAI, Google, DeepSeek, xAI, Mistral, MiniMax, Z.AI, Kimi, Ollama, Ollama Cloud, OpenCode Zen/Go. OAuth providers shown as read-only. Keys stored in ~/.hermes/.env, take effect immediately. Fully localised (6 locales). (api/providers.py, api/routes.py, static/panels.js, static/i18n.js) (PR #867 by @bergeouss, closes #586)

Security

• Provider write endpoints require auth or local/private-network client (matching onboarding endpoint gate)
• .env created at 0600 from first byte via os.open; pre-existing files tightened to 0600 on every write
• Full _ENV_LOCK coverage across load/modify/write — prevents TOCTOU race between concurrent POSTs

[v0.50.158] — 2026-04-23

Fixed

• Post-update page reload no longer races against server restart — applyUpdates() and forceUpdate() now poll /health every 500ms (up to 15 seconds) instead of firing a blind 2500ms setTimeout. The existing reconnect banner shows "⏳ Restarting… please wait" during the poll window, giving users a visible status and a manual Reload button. If the server is still down after 15s, the banner message changes to prompt a manual reload. Fixes 502 errors seen when the server restart outpaces the fixed delay, especially behind reverse proxies. (static/ui.js) (closes #874)

[v0.50.157] — 2026-04-22

Fixed

• Nous portal models now route and format correctly — two bugs fixed: (1) _PROVIDER_MODELS["nous"] updated from bare IDs (claude-opus-4.6) to slash-prefixed format (anthropic/claude-opus-4.6) that the Nous portal API expects. (2) resolve_model_provider() now routes cross-namespace models through portal providers (Nous, OpenCode Zen, OpenCode Go) directly instead of mis-routing to OpenRouter. Portal guard returns the full slash-preserved model ID so Nous receives the correct format. 10 regression tests. (api/config.py) (closes #854)

[v0.50.156] — 2026-04-22

Security

• ⚠️ Breaking change — auto-install of agent dependencies is now opt-in — users previously relying on auto-install must now set HERMES_WEBUI_AUTO_INSTALL=1 to restore the previous behaviour. A new _trusted_agent_dir() check validates ownership and permission bits before allowing pip to run. (api/startup.py, README.md) (addresses #842 by @tomaioo)

[v0.50.155] — 2026-04-22

Fixed

• Honcho per-session memory uses stable session ID across WebUI turns — api/streaming.py now passes gateway_session_key=session_id to AIAgent (defensive, same pattern as api_mode/credential_pool). Without this, Honcho's per-session strategy created a new Honcho session on each streaming request. (api/streaming.py) (closes #855)

[v0.50.154] — 2026-04-22

Fixed

• Thinking card no longer mirrors main response — removed early return in _streamDisplay() that bypassed think-block stripping when reasoningText was populated. (static/messages.js) (closes #852)

[v0.50.153] — 2026-04-22

Fixed

• Live-fetched portal models route through configured provider — _fetchLiveModels() applies @provider: prefix. (closes #854)

[v0.50.152] — 2026-04-22

Fixed

• Image generation renders inline — MEDIA: token restore renders all https:// URLs as <img>. (closes #853)
• Auto-title strips thinking preambles — _strip_thinking_markup() strips Qwen3-style plain-text reasoning preambles. (closes #857)

[v0.50.151] — 2026-04-22

Added

• Ollama Cloud support — added ollama-cloud display name + dynamic model-list handler backed by hermes_cli.models.provider_model_ids(). Live-models endpoint routes ollama-cloud through the same formatter. Server-side _format_ollama_label() and matching client-side _fmtOllamaLabel() turn Ollama tag IDs into readable labels (e.g. qwen3-vl:235b-instruct → Qwen3 VL (235B Instruct)). (#820 by @starship-s, #860)

Fixed

• credential_pool providers now visible in the model dropdown — get_available_models() previously only read active_provider from the auth store. Providers added via credential_pool (e.g. an Ollama Cloud key stored by the auth layer without a matching shell env var) were silently invisible. The fix loads credential_pool entries and adds any provider with at least one non-ambient credential to detected_providers. Ambient gh-cli tokens (source gh_cli / label gh auth token) are explicitly excluded so Copilot doesn't appear merely because gh is installed. Two-tier detection: primary via agent.credential_pool.load_pool(), fallback via raw field inspection when the upstream module isn't importable. (#820 by @starship-s, #860)
• _apply_provider_prefix() helper extracted — removes ~15 lines of duplicated inline @provider: prefixing logic for non-active providers. Semantics unchanged; one fewer place for drift. (#860)
• Model chip shows friendly labels for bare Ollama IDs — static/ui.js:getModelLabel() now routes Ollama tag-format IDs (e.g. kimi-k2.6 or @ollama-cloud:glm5.1) through _fmtOllamaLabel(). Custom <option> text uses the same helper. looksLikeBareOllamaId narrowed to @ollama* or colon-tag patterns — does not reformat generic IDs like gpt-5.4-mini. syncModelChip() is now called after localStorage restore so the chip reflects the saved selection on first paint. (#860)

[v0.50.150] — 2026-04-22

Fixed

• Profile switching: three related state fixes — (1) hermes_profile=default cookie is now persisted instead of being cleared with max-age=0, which had caused the browser to fall back to the process-global profile on the next request. (2) The sessionInProgress branch of switchToProfile() now calls syncTopbar() instead of the undefined updateWorkspaceChip(). (3) Sidebar and dropdown active-profile rendering now prefer S.activeProfile client state when available, with a safe fallback. (#849 by @migueltavares)

[v0.50.149] — 2026-04-22

Fixed

• GET /api/session is now side-effect free for stale-model sessions — the read path previously called _normalize_session_model_in_place(), which could write back to disk and update the session index while handling a plain read. Replaced with a read-only _resolve_effective_session_model_for_display() that returns the effective display model without any write-back. Closes #845. (#848 by @franksong2702)

[v0.50.148] — 2026-04-22

Fixed

• Prune stale _index.json ghost rows after session-id rotation — index entries whose backing session file no longer exists (e.g. after context compression rotates the session id) are now pruned on both incremental index writes and all_sessions() reads. Fixes duplicate session entries in the sidebar. Also pre-snapshots in_memory_ids under a single LOCK acquisition in all_sessions() rather than one per row — small but measurable contention reduction. Closes #846. (#847 by @franksong2702)

[v0.50.147] — 2026-04-22

Fixed

• Font size setting now visibly changes UI text — selecting Small or Large in Appearance settings previously had no visible effect because the CSS override only changed :root{font-size}, but the stylesheet uses 230+ hardcoded px values that are unaffected by root font-size. Added explicit per-element overrides for the key UI surfaces: chat message body, sidebar session list, composer textarea, and workspace file tree. Closes #843. (#844)

[v0.50.146] — 2026-04-22

Fixed

• Slash command input now shown as user message in chat — commands like /help, /skills, /status previously produced a response with no visible user input above it, making the conversation appear to start from nowhere. Added a noEcho flag to action-only commands (/clear, /new, /stop, etc.) and echo the user's input as a message bubble for commands that produce a chat response. User message is pushed BEFORE the handler runs to ensure correct ordering in S.messages. Closes #840. (#841)

[v0.50.145] — 2026-04-22

Fixed

• Slash command dropdown scrolls to keep highlighted item visible — pressing ↓/↑ to navigate the autocomplete list no longer lets the selected item move out of the visible dropdown area. Added scrollIntoView({block:'nearest'}) after updating the selected class in navigateCmdDropdown(). Closes #838. (#839)

[v0.50.141] — 2026-04-22

Fixed

• Session list appears empty after browser reload / version update — Chrome's bfcache was restoring a prior search query into #sessionSearch on page restore, causing renderSessionListFromCache() to silently filter out all sessions (including newly created ones). Added autocomplete="off" to the search input and an explicit value-clear at boot before the first render. Closes #822. (#830)

[v0.50.140] — 2026-04-22

Fixed

• Gateway SSE sync failures now surface to the user — when the gateway watcher thread is not running, the browser now shows a toast notification and automatically falls back to 30-second polling for session sync. Previously this failed silently with no feedback. (#828, absorbs PR #826 by @cloudyun888, fixes #635)
• _gateway_sse_probe_payload now checks watcher._thread.is_alive() rather than just watcher is not None, so a watcher instance with a dead poll thread correctly reports unavailable and triggers the polling fallback.
• Probe fetch network errors now also activate the polling fallback as a safe default rather than silently swallowing the failure.

[v0.50.139] — 2026-04-22

Fixed

• Default workspace persists after session delete — the blank new-chat page now shows the configured default workspace even after creating and deleting sessions. Root cause: newSession() consumed S._profileDefaultWorkspace for a one-shot profile-switch semantic, leaving it null on all subsequent returns to blank state. Fix: introduced S._profileSwitchWorkspace as a dedicated one-shot flag for profile switches; S._profileDefaultWorkspace is now persistent from boot throughout the session lifecycle. Workspace chip, promptNewFile, promptNewFolder, and switchToWorkspace all continue to work correctly. Closes #823. (#824)

[v0.50.138] — 2026-04-22

Fixed

• Streaming: response no longer renders twice or leaves thinking block below the answer — two race conditions in attachLiveStream fixed. (A) A trailing token/reasoning event could queue a requestAnimationFrame that fired after done had already called renderMessages(), inserting a duplicate live-turn wrapper below the settled response. Fixed via _streamFinalized flag + cancelAnimationFrame in all terminal handlers (done, apperror, cancel, _handleStreamError). (B) A proposed accumulator-reset on SSE reconnect was reverted — the server uses a one-shot queue and does not replay events; the reset would have wiped pre-drop response content. Bug A's fix alone resolves all three reported symptoms (double render, thinking card below answer, stuck cursor). (#821, closes #631)
• Blank new-chat page now shows default workspace and allows workspace actions — syncWorkspaceDisplays() uses S._profileDefaultWorkspace as fallback when no session is active; the workspace chip is now enabled on the blank page; promptNewFile, promptNewFolder, switchToWorkspace, and promptWorkspacePath all auto-create a session bound to the default workspace when called on the blank page, rather than silently returning. Boot.js hydrates S._profileDefaultWorkspace from /api/settings.default_workspace before any session is created. (#821, closes #804)

[v0.50.135] — 2026-04-22

Fixed

• BYOK/custom provider models now appear in the WebUI model dropdown — three root causes fixed. (1) Provider aliases like z.ai, x.ai, google, grok, claude, aws-bedrock, dashscope, and ~25 others were not normalized to their internal catalog slugs, causing the provider to miss _PROVIDER_MODELS lookup and show an empty dropdown while the TUI worked. (2) The fix works even without hermes-agent on sys.path (CI, minimal installs) via an inlined _PROVIDER_ALIASES table in api/config.py — the previous try/except ImportError was silently swallowing the failure. (3) custom_providers entries now appear in the live model enrichment path. provider_id on every group makes optgroup matching deterministic. Closes #815. (#817)

[v0.50.134] — 2026-04-21

Fixed

• Update banner: conflict/diverged recovery path + server self-restart after update — three failure modes resolved. (1) Update failed (agent): Repository has unresolved merge conflicts was a dead-end with no recovery path; the error now includes an actionable git checkout . && git pull --ff-only command, a persistent inline display (not a fleeting toast), and a Force update button that executes the reset via the new POST /api/updates/force endpoint. (2) After a successful update, the server now self-restarts via os.execv (2 s delay), eliminating the stale-sys.modules bug that broke custom provider chat on the next request. (3) When both webui and agent updates are pending, the restart now correctly waits for the second update to complete before re-executing (_apply_lock coordination), preventing the mid-pull kill race. Closes #813, #814. (#816)

[v0.50.133] — 2026-04-21

Added

• /reasoning show and /reasoning hide slash commands — toggle thinking/reasoning block visibility directly from the chat composer, matching the Hermes CLI/TUI parity. /reasoning show reveals all thinking cards (live and historical) and persists the preference; /reasoning hide collapses them. /reasoning with no args shows current state. The show|hide options now appear in autocomplete alongside the existing low|medium|high effort levels. The show_thinking setting is persisted via /api/settings so the preference survives page reloads. Closes #461 (partial — effort level routing to agent is a follow-up). (#812)

[v0.50.132] — 2026-04-21

Fixed

• Periodic session checkpoint during long-running agent tasks — messages accumulated during multi-step research or coding tasks were silently lost if the server restarted mid-run. The root cause: Session.save() was only called after agent.run_conversation() completed. The fix adds a daemon thread that saves the session every 15 seconds whenever the on_tool callback signals a completed tool call — the first reliable mid-run signal that real progress has been made (the agent works on an internal copy of s.messages, so watching message-count would never trigger). Session.save() gains a skip_index=True flag so checkpoints skip the expensive index rebuild; the final s.save() at task completion still rebuilds it. On a server restart the user's message and turn bookkeeping remain on disk — worst case: up to 15 seconds of tool-call progress lost rather than the entire conversation turn. Closes #765. Absorbed and corrected from PR #809 by @bergeouss. (#810)

[v0.50.131] — 2026-04-21

Fixed

• Workspace pane now respects the app theme — seven hardcoded dark-mode rgba(255,255,255,...) colors in the workspace panel CSS have been replaced with theme-aware CSS variables (--hover-bg, --border2, --code-inline-bg). The file list hover, panel icon buttons, preview table rows, and the preview edit textarea now all update correctly when switching between light and dark themes. Reported in #786. (#807)

[v0.50.130] — 2026-04-21

Fixed

• New sessions now appear immediately in the sidebar — the zero-message Untitled filter now exempts sessions younger than 60 seconds, so clicking New Chat shows the session right away instead of waiting for the first message. Sessions older than 60 seconds that are still Untitled with 0 messages continue to be suppressed (ghost sessions from test runs / accidental page reloads). Addresses Bug A only of #789; Bug B (SSE refetch resetting sidebar mid-interaction) is a separate fix. (#806)

[v0.50.129] — 2026-04-21

Fixed

• Profile isolation: complete fix via cookie + thread-local context — PR #800 (v0.50.127) only fixed POST /api/session/new. GET /api/profile/active still read the process-level _active_profile global, so a page refresh while another client had a different profile active would corrupt S.activeProfile in JS, defeating the session-creation fix on the next new chat. This release completes the isolation: profile switches now set a hermes_profile cookie (HttpOnly, SameSite=Lax) and never mutate the process global. Every request handler reads the cookie into a thread-local; all server functions (get_active_profile_name(), get_active_hermes_home(), list_profiles_api(), memory endpoints, model loading) automatically see the per-client profile. switch_profile() gains a process_wide kwarg — the HTTP route passes False, keeping the global clean; CLI callers default to True (unchanged behaviour). Absorbed from PR #803 by @bergeouss with correctness fixes reviewed by Opus. (#805)

[v0.50.128] — 2026-04-21

Fixed

• " no longer mangles to " inside code blocks — the autolink pass in renderMd() was operating inside <pre><code> blocks because they weren't stashed before the pass ran. When a code block contained a URL adjacent to " (the HTML-escaped form of "), the autolink regex captured the entity suffix and esc() double-encoded it, producing " in the rendered HTML and copy buffer. Fixed by adding <pre> blocks to _al_stash so the autolink regex never touches code-block content. Reported and fixed by @starship-s. (#801)

[v0.50.127] — 2026-04-21

Fixed

• Profile isolation: switching profiles in one browser client no longer affects concurrent clients — api/profiles.py stored _active_profile as a process-level global; switch_profile() mutated it for the whole server, so a second user switching profiles would clobber new-session creation for all other active tabs. The fix: (1) get_hermes_home_for_profile(name) — a pure path resolver that reads only the filesystem, validates the profile name against the existing _PROFILE_ID_RE pattern (rejects path traversal), and never mutates os.environ or module state; (2) new_session() now accepts an explicit profile param passed from the client's S.activeProfile in the POST body, short-circuiting the process global; (3) the streaming handler resolves HERMES_HOME from the per-session s.profile instead of the shared global. Reported in #798. (#800)

[v0.50.126] — 2026-04-21

Fixed

• Onboarding now recognizes credential_pool OAuth auth for openai-codex — the readiness check in api/onboarding.py only looked at the legacy providers[provider] key in auth.json. Hermes runtime resolves OAuth tokens from credential_pool[provider] (device-code / OAuth flows), so WebUI could report "not ready" while the runtime chatted successfully. The check now covers both storage locations with a fail-closed helper. Adds three regression tests. Reported in #796, fixed by @davidsben. (#797)

[v0.50.125] — 2026-04-21

Fixed

• python3 bootstrap.py now honours .env settings — running bootstrap.py directly (the primary documented entry point) previously ignored HERMES_WEBUI_HOST, HERMES_WEBUI_PORT, and other repo .env settings because start.sh's source .env step was skipped. bootstrap.py now loads REPO_ROOT/.env itself before reading any env-var defaults, making the two launch paths identical. Reported in #730 by @leap233. (#791)

[v0.50.124] — 2026-04-21

Fixed

• Settings version badge now shows the real running version — the badge in the Settings → System panel was hardcoded to v0.50.87 (36 releases behind) and the HTTP Server: header said HermesWebUI/0.50.38 (85 behind). Both are now resolved dynamically at server startup from git describe --tags --always --dirty. Docker images (where .git is excluded) receive the correct tag via a build-time ARG HERMES_VERSION written to api/_version.py. COPY now uses --chown=hermeswebuitoo:hermeswebuitoo so the write succeeds under the unprivileged container user. No manual "update the badge" step is needed going forward — tagging is sufficient. Version file parsing uses regex instead of exec() for supply-chain safety. (#790, #793)

[v0.50.123] — 2026-04-21

Fixed

• Default model change surfaced stale value after model-list TTL cache landed — set_hermes_default_model() now explicitly invalidates _available_models_cache after reload_config(). The 60s TTL cache introduced in v0.50.121 (#780) only invalidates on config-file mtime change, but reload_config() resyncs _cfg_mtime before get_available_models() runs — so the mtime check never fires and the POST response (plus downstream reads within the TTL window) returned the previous model until the cache expired. Root cause of the test_default_model_updates_hermes_config CI flake as well. (#788)
• Test teardown restores conftest default deterministically — test_default_model_updates_hermes_config now restores to the conftest-injected TEST_DEFAULT_MODEL (via tests/_pytest_port.py) instead of reading the pre-test value from /api/models, so teardown is stable regardless of ordering. Also updates TESTING.md automated-test count to 1578. (#788)

[v0.50.122] — 2026-04-21

Fixed

• Duplicate X button in workspace panel header on mobile — at viewport widths ≤900px the desktop close-preview button (.close-preview / btnClearPreview) is now hidden via CSS, leaving only the mobile close button (.mobile-close-btn) visible. Previously both buttons appeared side-by-side when the window was resized below the 900px breakpoint. (#781)

[v0.50.121] — 2026-04-20

Performance

• Model list no longer re-scans on every session load — get_available_models() now caches its result for 60 seconds (configurable via _AVAILABLE_MODELS_CACHE_TTL). Config file changes (mtime) invalidate the cache immediately. This eliminates the ~4s AWS IMDS timeout that blocked the model dropdown on every page load for users on EC2 without an IAM role. Thread-safe via a dedicated lock; callers receive a copy.deepcopy() so mutations don't pollute the cache. (credit: @starship-s)
• Session saves no longer trigger a full O(n) index rebuild — _write_session_index() now does an incremental read-patch-write of the existing index JSON when called from Session.save(), rather than re-scanning every session file on disk. Falls back to a full rebuild when the index is missing or corrupt. Atomic write via .tmp + os.replace(). At 100+ sessions this is a meaningful speedup. (credit: @starship-s)

[v0.50.120] — 2026-04-20

Fixed

• Cancelled sessions no longer get stuck — cancel_stream() now eagerly pops stream state (STREAMS, CANCEL_FLAGS, AGENT_INSTANCES) and clears session.active_stream_id immediately after signalling cancel. Previously, the 409 "session already has an active stream" guard would block all new chat requests until the agent thread's finally block ran — which never happens when the thread is blocked in a C-level syscall on a bad tool call. Session cleanup runs outside STREAMS_LOCK to preserve lock ordering and avoid deadlock. (Fixes #653, credit: @bergeouss)

[v0.50.119] — 2026-04-20

Fixed

• Older hermes-agent builds no longer crash on startup — the WebUI now checks which params AIAgent.__init__ actually accepts (via inspect.signature) before constructing the agent. The four params added in newer builds (api_mode, acp_command, acp_args, credential_pool) are passed only when present, so older installs degrade gracefully instead of throwing TypeError. (#772)

[v0.50.118] — 2026-04-20

Fixed

• CLI sessions: silent failure now logged — get_cli_sessions() no longer swallows DB errors silently. If state.db is missing the source column (older hermes-agent) or has any other schema/lock issue, a warning is now logged with the DB path and a hint to upgrade hermes-agent. This makes "Show CLI sessions in sidebar has no effect" diagnosable from the server log instead of requiring code archaeology. (#634)

[v0.50.117] — 2026-04-20

Fixed

• Queued messages survive page refresh — when a follow-up message is submitted while the agent is busy, the queue is now persisted to sessionStorage. On reload, if the agent is still running the queue is silently restored and will drain normally. If the agent has finished, the first queued message is restored into the composer as a draft with a toast notification ("Queued message restored — review and send when ready"), preventing accidental auto-send. Stale entries (created before the last assistant response) are automatically discarded. (#660)

[v0.50.116] — 2026-04-20

Fixed

• Session errors survive page reload — provider quota exhaustion, rate limit, auth, and agent errors are now persisted to the session file as a special error message. Reloading the page after an error no longer shows a blank conversation. Error messages are excluded from the next API call's conversation history so the LLM never sees its own error as prior context. (#739)
• Quota/credit exhaustion shows a distinct error — "Out of credits" now appears instead of the generic "No response received" message when a Codex or other provider account runs out of credits. Both the silent-failure path and the exception path now classify insufficient_credits / quota_exceeded separately from rate limits, with a targeted hint to top up the balance or switch providers. (#739)
• Context compaction no longer hangs the session — when run_conversation() rotates the session_id during context compaction, stream_end now uses the original session_id (captured before the run), matching what the client captured in activeSid. Previously the mismatch caused the EventSource to stay open, trigger a reconnect loop, and show "Connection lost." The same fix also corrects the title SSE event. (#652, #653)

[v0.50.115] — 2026-04-20

Removed

• Chat bubble layout setting removed — the opt-in bubble_layout toggle (issue #336) is removed end-to-end: the Settings checkbox, all related CSS (.bubble-layout selectors), the config.py default/bool-key entries, the boot.js/panels.js class toggles, and all locale strings across 6 languages. Stale bubble_layout values in existing settings.json files are silently dropped on load via the legacy-drop-keys migration path. (Fixes #760, credit: @aronprins)

[v0.50.114] — 2026-04-20

Fixed

• Default model now reads from Hermes config.yaml — removes the split-brain state where WebUI Settings and the Hermes runtime/CLI/gateway could have different default models. default_model is no longer persisted in settings.json; it is read from and written to config.yaml via a new POST /api/default-model endpoint. Existing saved default_model values in settings.json are silently migrated away on first load. Saving Settings now calls /api/default-model when the model changed, with error handling so a config.yaml write failure doesn't leave the UI in a broken state. (#761, credit: @aronprins)

[v0.50.113] — 2026-04-20

Fixed

• Slash autocomplete now keeps command completion flowing into sub-arguments — sub-argument-only commands like /reasoning now appear in the first suggestion list, the current dropdown selection is visibly highlighted while navigating with arrow keys, and accepting a top-level command like /reasoning immediately opens the second-level suggestions instead of requiring an extra space press. (Fixes #632, credit: @franksong2702)

[v0.50.112] — 2026-04-20

Added

• Sidebar density mode for the session list — new Settings option toggles the left session list between a compact default and a detailed view that shows message count and model. Profile names only appear in detailed mode when "Show active profile only" is disabled. (#673)

[v0.50.111] — 2026-04-20

Fixed

• Dark-mode user bubbles no longer use a glaring bright accent fill — :root.dark now overrides --user-bubble-bg/--user-bubble-border to var(--accent-bg-strong) (a 15% tint), keeping the bubble visually subdued in dark skins. The 6 per-skin --user-bubble-text hacks are removed; text color falls back to var(--text). Edit-area box-shadow now uses the shared --focus-ring token. (credit: @aronprins)
• Thinking card header is now collapsible — the main _thinkingMarkup() function now includes onclick toggle and the chevron affordance, matching the compression reference card pattern. The header has display:flex for proper icon/label/chevron alignment.

[v0.50.110] — 2026-04-20

Fixed

• Message footer metadata is now consistent across user and assistant turns — timestamps are available on both sides, but footer chrome stays hidden until hover instead of being always visible on assistant messages. The last assistant turn keeps cumulative in/out/cost usage visible, then reveals timestamp and actions inline on hover. Existing timestamps for unchanged historical messages are also preserved during transcript rebuilds, so older turns no longer get re-stamped to the newest reply time. (Fixes #680, credit: @franksong2702)

[v0.50.109] — 2026-04-20

Fixed

• Named custom provider test isolation — _models_with_cfg() in tests/test_custom_provider_display_name.py now pins _cfg_mtime before calling get_available_models(), preventing the mtime-guard inside that function from firing reload_config() and silently discarding the patched config.cfg. This fixes an ordering-dependent test failure where any test that wrote config.yaml before this test ran would cause get_available_models() to return the real OpenRouter model list instead of the patched Agent37 group. (Fixes #754)

[v0.50.108] — 2026-04-20

Fixed

• Kimi K2.5 added to Kimi/Moonshot provider model list — kimi-k2.5 was present in hermes_cli but missing from the WebUI's api/config.py kimi-coding provider, making it unavailable in the model selector. (Fixes #740)

[v0.50.107] — 2026-04-20

Added

• Three-container UID/GID alignment guide in README — new subsection explains why UIDs must match across containers sharing a bind-mounted volume, documents the variable name asymmetry (HERMES_UID/HERMES_GID for the agent image vs WANTED_UID/WANTED_GID for the WebUI image), gives the recommended .env setup for standard Linux and NAS/Unraid deployments, provides the one-time chown fix for existing installs, and notes that the dashboard volume must be read-write. (Fixes #645)

Fixed

• HERMES_UID/HERMES_GID forwarded to agent and dashboard containers — docker-compose.three-container.yml now declares HERMES_UID=${HERMES_UID:-10000} and HERMES_GID=${HERMES_GID:-10000} in the environment blocks for hermes-agent and hermes-dashboard, making the documented .env recipe functional.

[v0.50.106] — 2026-04-20

Fixed

• PermissionError in auth signing key no longer crashes every HTTP request — key_file.exists() in api/auth.py's _signing_key() was called outside the try/except block. In three-container bind-mount setups where the agent container initialises the state directory under a different UID, pathlib.Path.exists() raises PermissionError, which escaped up through is_auth_enabled() → check_auth() and crashed every HTTP request with HTTP 500. The exists() call is now inside the try block so PermissionError is caught and falls back to an in-memory key. (PR #625)

[v0.50.105] — 2026-04-20

Fixed

• Profile deletion warning now leads with destructive impact — the confirmation dialog now reads: "All sessions, config, skills, and memory for this profile will be permanently deleted. This cannot be undone." Updated across all 6 supported locales. (Fixes #637)

[v0.50.104] — 2026-04-20

Fixed

• Agent image URLs rewritten to actual server base — when an agent emits a MEDIA:http://localhost:8787/... URL, the WebUI now rewrites the localhost/127.0.0.1 host to the page's document.baseURI before inserting it as an <img src>. Fixes broken images for remote users (VPN, Docker, deployed servers) and preserves subpath mounts (e.g. /hermes/). (Fixes #642)

[v0.50.103] — 2026-04-20

Fixed

• Windows .env encoding fix — write_text() calls in api/profiles.py were missing encoding='utf-8', causing failures on Windows systems with non-UTF-8 locale encodings. All file I/O in api/ now explicitly specifies encoding='utf-8'. (Fixes #741)

[v0.50.102] — 2026-04-20

Fixed

• Code blocks no longer lose newlines when not preceded by a blank line — renderMd() now stashes <pre> blocks (including language-labelled wrappers), mermaid diagrams, and katex blocks before the paragraph-splitting pass, then restores them. Previously, if a fenced code block was not separated from surrounding text by a blank line, all \n inside it were replaced with <br>, collapsing the entire block to one line. (Fixes #745)

[v0.50.101] — 2026-04-20

Fixed

• Session model normalization: null/empty model no longer triggers index rebuild — sessions with no stored model (model: null or missing) now return the provider default without writing to disk. Previously a spurious session.save() (and full session index rebuild) could fire for any such session. (#751 follow-up)

[v0.50.100] — 2026-04-20

Fixed

• Session model normalization: unknown provider prefixes now pass through — custom/unlisted model prefixes (e.g. custom-provider/my-model) are no longer incorrectly stripped when switching providers. Only well-known provider prefixes (gpt-, claude-, gemini-, etc.) are normalized. Regression introduced in v0.50.99. (#751)

[v0.50.99] — 2026-04-20

Fixed

• Stale session models normalized after provider switch — sessions that still reference a model from a previous provider (e.g. a gemini-* model after switching to OpenAI Codex) are silently corrected to the current provider's default on load, preventing startup failures. (Closes #748, credit: @likawa3b)

[v0.50.98] — 2026-04-20

Fixed

• Slash command autocomplete constrained to composer width — the / command dropdown is now positioned inside the composer box, so suggestions stay visually anchored to the input area rather than expanding across the full chat panel. (Closes #633, credit: @franksong2702)

[v0.50.97] — 2026-04-20

Fixed

• Only the latest user message can be edited — older user turns no longer show the pencil/edit affordance. This avoids implying that historical turns can be lightly edited when the actual action truncates the session and restarts the conversation from that point. (Closes #744)
• Message footer metadata is now consistent across user and assistant turns — timestamps are available on both sides using the existing _ts / timestamp fields, but footer chrome now stays hidden until hover instead of being always visible on assistant messages. The last assistant turn keeps cumulative in/out/cost usage visible, then reveals timestamp and actions inline on hover so the footer does not grow an extra row. Existing timestamps for unchanged historical messages are also preserved during transcript rebuilds, so older turns no longer get re-stamped to the newest reply time.

[v0.50.96] — 2026-04-19

Added

• Three-container Docker Compose reference config — new docker-compose.three-container.yml adds an agent + dashboard + WebUI configuration on a shared hermes-net bridge, with memory/CPU limits and localhost-only port bindings by default.

Fixed

• Two-container compose: gateway port now exposed — 127.0.0.1:8642:8642 added so the gateway is reachable from the host for debugging. Explicit command: gateway run replaces entrypoint defaults.
• Workspace path expansion — ${HERMES_WORKSPACE:-~/workspace} uses tilde in the default value, which Docker Compose correctly expands. docker-compose.yml also fixed to use ${HERMES_WORKSPACE:-${HOME}/workspace} instead of nesting workspace inside the hermes home dir.
• HERMES_WEBUI_STATE_DIR default corrected — webui-mvp → webui, matching the current default in config.py. Prevents silent state directory split for new deployments. (PR #708)

[v0.50.95] — 2026-04-19

Added

• Full Russian (ru-RU) localization — 389/389 English keys covered, Slavic plural forms correctly implemented, native Cyrillic characters throughout. Login page Russian added. Russian locale now leads all non-English locales on key coverage. (PR #713, credit: @DrMaks22 and @renheqiang)

[v0.50.92] — 2026-04-19

Fixed

• XML tool-call syntax no longer leaks into chat bubbles — <function_calls> blocks stripped server-side in the streaming pipeline and client-side in both the live stream and history render. Fixes the default DeepSeek profile showing raw XML on starter prompts. (#702)
• Workspace file panel shows an empty-state message instead of a blank pane when no workspace is configured or the directory is empty. (#703)
• Notification settings description uses "app" instead of "tab" — more accurate for native Mac app users. (#704) (PR #712)

[v0.50.95] — 2026-04-19

Fixed

• Assistant messages now show footer timestamps, and older messages show a fuller date+time — assistant response segments now render the same footer timestamp affordance as user messages, using the existing message _ts / timestamp fields already stamped by the WebUI. Messages from today still show a compact time-only label, while older messages now show a fuller date+time string directly in the footer for better readability when reviewing past sessions.

[v0.50.94] — 2026-04-19

Fixed

• Mic toggle is now race-safe and works over Tailscale — rapid click/toggle no longer leaves recording in inconsistent state (_isRecording flag with proper reset in all paths). recognition.start() is now correctly called (was previously only present in a comment string, so SpeechRecognition never started and the Tailscale fallback never fired). Falls back to MediaRecorder when speech.googleapis.com is unreachable. Browser capability preference persisted in localStorage across reloads. (PR #683 by @MatzAgent)

[v0.50.93] — 2026-04-19

Fixed

• Gateway message sync no longer corrupts the active session on slow networks — the sessions_changed SSE handler now captures the active session ID before the async import_cli fetch and validates it in .then(), preventing session-switch races from overwriting the wrong conversation. Added is_cli_session guard so the handler only fires for CLI-originated sessions. The backend import path now also verifies that existing messages are a strict prefix of the fresh CLI messages before overwriting, preventing silent data loss on hybrid WebUI+CLI sessions. (PR #676 by @yunyunyunyun-yun)

[v0.50.91] — 2026-04-19

Added

• Slash command parity with hermes-agent — /retry, /undo, /stop, /title, /status, /voice commands now work in the Web UI, matching gateway behaviour. New GET /api/commands endpoint and api/session_ops.py backend. (PR #618 by @renheqiang)
• Skills appear in / autocomplete — the composer slash-command dropdown now surfaces Hermes skills from /api/skills. Skill entries show a Skill badge and are ranked below built-ins on collisions. (PR #701 by @franksong2702)

[v0.50.87] — 2026-04-18

Fixed

• Streaming scroll override (#677) — auto-scroll no longer hijacks your position while the AI is responding. renderMessages() and appendThinking() now call scrollIfPinned() during an active stream instead of scrollToBottom(), so scrolling up to read earlier content works correctly. Scroll re-pin threshold widened from 80px to 150px to avoid hair-trigger re-pinning on fast mouse wheels. A floating ↓ button appears at the bottom-right of the message area when you scroll up, giving a one-click way to jump back to live output.
• Gemini 3.x model IDs updated (#669) — all provider model lists (gemini, google, OpenRouter fallback, GitHub Copilot, OpenCode Zen, Nous) now include the correct Gemini 3.1 Pro Preview, Gemini 3 Flash Preview, and Gemini 3.1 Flash Lite Preview model IDs alongside stable Gemini 2.5 models. The missing gemini-3.1-flash-lite-preview (which caused API_KEY_INVALID errors) is now present. GEMINI_API_KEY env var now also triggers native gemini provider detection.
• Read-only workspace mount no longer crashes Docker startup (#670) — docker_init.bash now checks [ -w "$HERMES_WEBUI_DEFAULT_WORKSPACE" ] before attempting chown or write-test on the workspace directory. :ro bind-mounts are silently accepted with a log message instead of calling error_exit.
• UID/GID auto-detection now works in two-container setups (#668) — docker_init.bash now probes /home/hermeswebui/.hermes and $HERMES_HOME (shared hermes-home volume) before falling back to /workspace. In Zeabur and Docker Compose two-container deployments where the hermes-agent container initializes the shared volume first, the WebUI now correctly inherits its UID/GID without manual WANTED_UID configuration.

[v0.50.86] — 2026-04-18

Added

• Searchable model picker — the model dropdown now has a live search input at the top. Type any part of a model name or ID to filter the list instantly; provider group headers (Anthropic, OpenAI, OpenRouter, etc.) remain visible in filtered results. Includes a clear button, Escape-to-close support, and a "No models found" empty state. i18n strings added for English, Spanish, and zh-CN. (PR #659 by @mmartial)

[v0.50.90] — 2026-04-19

Fixed

• /compress reference card now shows full handoff immediately after compression — the context compaction card no longer shows only the short 3-line API summary right after /compress completes. The UI now prefers the persisted compaction message (full handoff) over the raw API response, matching what is shown after a page reload. (PR #699 by @franksong2702)

[v0.50.89] — 2026-04-19

Fixed

• Explicit UTF-8 encoding on all config/profile reads — Path.read_text() calls in api/config.py and api/profiles.py now always specify encoding="utf-8". On Windows systems with a non-UTF-8 default locale (e.g. GBK on Chinese Windows, Shift_JIS on Japanese Windows), omitting the encoding argument caused silent config loading failures. (PR #700 by @woaijiadanoo)

[v0.50.88] — 2026-04-19

Fixed

• System Preferences model dropdown no longer misattributes the default model to unrelated providers — the /api/models builder no longer injects the global default_model into unknown provider groups such as Alibaba or Minimax-Cn. When a provider has no real model catalog of its own, it is now omitted from the dropdown instead of showing a misleading placeholder like gpt-5.4-mini. If the active provider still needs a default fallback, it is shown in a separate Default group rather than being mixed into another provider's models.

[v0.50.85] — 2026-04-18

Fixed

• _provider_oauth_authenticated() now respects the hermes_home parameter — the function had a CLI fast path (hermes_cli.auth.get_auth_status()) that ignored the caller-supplied hermes_home and read from the real system home. On machines where openai-codex (or another OAuth provider) was genuinely authenticated, this caused three test assertions to return True instead of False, regardless of the isolated tmp_path the test passed in. Removed the CLI fast path; the function now reads exclusively from hermes_home/auth.json, which is both the correct scoped behavior and what the docstring described. No functional change for production (the auth.json path was already the complete fallback). (Fixes pre-existing test_sprint34 failures)

[v0.50.84] — 2026-04-18

Fixed

• MiniMax M2.7 now appears in the model dropdown for OpenRouter users — MiniMax-M2.7 and MiniMax-M2.7-highspeed were present in _PROVIDER_MODELS['minimax'] but absent from _FALLBACK_MODELS, so OpenRouter users (who see the fallback list) never saw them. Both models added to the fallback list under the MiniMax provider label.
• MINIMAX_API_KEY env var now triggers MiniMax detection — the env scan tuple in get_available_models() was missing MINIMAX_API_KEY and MINIMAX_CN_API_KEY, so users who set those vars directly in os.environ (rather than in ~/.hermes/.env) did not see the MiniMax provider in the dropdown. Both keys now scanned. (PR #650 by @octo-patch)

[v0.50.83] — 2026-04-18

Fixed

• Provider models from config.yaml now appear in the model dropdown — users who configured custom providers in config.yaml with an explicit models: list saw the hardcoded _PROVIDER_MODELS fallback instead of their configured models. The fix extends the model-list builder to check cfg.providers[pid].models and use it when present, supporting both dict format (models: {model-id: {context_length: ...}}) and list format (models: [model-id, ...]). Providers only in config.yaml (not in _PROVIDER_MODELS) are now included in the dropdown instead of being silently skipped. (PR #644 by @ccqqlo)

[v0.50.82] — 2026-04-18

Added

• /compress command with optional focus topic — manual session compression runs as a real API call via POST /api/session/compress, replacing the old agent-message-based /compact. Accepts an optional focus topic (/compress summarize code changes) that guides what the compression preserves. The compression flow is shown as three transcript-inline cards: a command card (gold), a running card (blue with animated dots), and a collapsible green success card showing the message-count delta and token savings. A reference card renders the full context compaction summary. /compact continues to work as an alias. focus_topic capped at 500 chars for defense-in-depth. Fallback token estimation uses word-count approximation when model metadata helpers are unavailable — intentional for resilience. (Closes #469, PR #619 by @franksong2702)

[v0.50.81] — 2026-04-18

Fixed

• Auto-title extraction improved for tool-heavy first turns — sessions where the agent's first response involved tool calls (e.g. memory lookups, file reads) were generating poor titles because the title extractor skipped all assistant messages with tool_calls, even when those messages contained substantive visible text. The extractor now picks the first pure (non-tool-call) assistant reply as the title source, using _looks_invalid_generated_title() to distinguish meta-reasoning preambles from real agentic replies. Also fixes _is_provisional_title() to normalize whitespace before comparing, so CJK text truncated at 64 characters correctly re-triggers title updates. (Closes #639, PR #640 by @franksong2702)

[v0.50.80] — 2026-04-18

Fixed

• Clicking a skill no longer silently loads content into a hidden panel — openSkill() now calls ensureWorkspacePreviewVisible() so the workspace panel auto-opens when you click a skill in the Skills tab. (Closes #643)
• Long thinking/reasoning traces now scroll instead of being clipped — the thinking card body now uses overflow-y: auto when open, so long traces are fully readable. (Closes #638)
• Sidebar nav icon hit targets are now correctly aligned — added display:flex; align-items:center; justify-content:center to .nav-tab so clicking the icon itself (not below it) activates the tab. (Closes #636)
• Safari iOS input auto-zoom fixed — bumped textarea#msg base font-size from 14px to 16px, which prevents Safari from zooming the viewport on input focus (Safari zooms when font-size < 16px). Visual difference is negligible. (Closes #630)

[v0.50.79] — 2026-04-17

Fixed

• Default model no longer shows as "(unavailable)" for non-OpenAI users — changed the hardcoded fallback DEFAULT_MODEL from openai/gpt-5.4-mini to "" (empty). When no default model is configured, the WebUI now defers to the active provider's own default instead of pre-selecting an OpenAI model that most providers don't have. Users who want a specific default can still set HERMES_WEBUI_DEFAULT_MODEL env var or pick a model in Preferences. (Closes #646)

[v0.50.78] — 2026-04-17

Fixed

• Gemma 4 thinking tokens no longer shown raw in chat — added <|turn|>thinking\n...<turn|> to the streaming think-token parser in static/messages.js and _strip_thinking_markup() in api/streaming.py. Previously Gemma 4's reasoning output appeared as raw text prepended to the answer. (Closes #607)

[v0.50.77] — 2026-04-17

Changed

• Color scheme system replaced with theme + skin axes — the old monolithic theme list (dark, slate, solarized, monokai, nord, oled, light) is split into two orthogonal axes: theme (light / dark / system) and skin (accent palette: Default gold, Ares red, Mono gray, Slate blue-gray, Poseidon ocean blue, Sisyphus purple, Charizard orange). Users can now mix any theme with any skin via the new Appearance settings tab. Internally, .dark class on <html> replaces data-theme; skin uses data-skin attribute and overrides only 5 accent CSS vars per skin, eliminating ~200 lines of duplicated palette overrides. (PR #627 by @aronprins)

Migration notes

• Legacy theme names are silently migrated on first load to the closest theme + skin pair: slate → dark+slate, solarized → dark+poseidon, monokai → dark+sisyphus, nord → dark+slate, oled → dark+default. Both backend (api/config.py::_normalize_appearance) and frontend (static/boot.js::_normalizeAppearance) apply the same mapping.
• Custom themes set via data-theme CSS overrides will reset to dark + default on first load. The pre-PR theme setting was open-ended ("no enum gate -- allows custom themes"); the new system enumerates valid values. Users who maintained custom CSS will need to re-apply via a skin choice or by overriding skin variables (--accent, --accent-hover, --accent-bg, --accent-bg-strong, --accent-text).

Fixed

• Send button stays active after clearing composer text — input listener now correctly toggles disabled state. (PR #627)
• Composer workspace/model label flash on page load — chips now wait for _bootReady before populating, eliminating the placeholder-then-real-value flicker. (PR #627)
• Topbar border invisible in light mode — added :root:not(.dark) border override. (PR #627)
• User message bubble text contrast — accent-colored bubbles now use skin-aware text colors meeting WCAG AA (Poseidon dark improved from 2.8 → 6.5 ratio). (PR #627)
• Settings skin persistence race condition — save now waits for server confirmation before applying. (PR #627)

[v0.50.76] — 2026-04-17

Fixed

• CSP blocked external images in chat — img-src in the Content Security Policy was restricted to 'self' and data:, causing the browser to block any external image URLs (e.g. from Wikipedia, GitHub, or other HTTPS sources) that the agent rendered in a response. Expanded to img-src 'self' data: https: blob: so external images load correctly. (Closes #608)

[v0.50.75] — 2026-04-17

Fixed

• Test isolation: pytest tests/ was overwriting ~/.hermes/.env with test placeholder keys — two unit tests in test_onboarding_existing_config.py called apply_onboarding_setup() in-process without mocking _get_active_hermes_home, so every test run wrote OPENROUTER_API_KEY=test-key-fresh (or test-key-confirm) to the production .env. Also added HERMES_BASE_HOME to the test server subprocess env (hard-locks profile resolution inside the server to the isolated temp state dir) and stripped real provider keys from the inherited subprocess environment. (PR #620)

[v0.50.71] — 2026-04-16

Fixed

• Docker: HERMES_WEBUI_DEFAULT_WORKSPACE was silently overridden by settings.json — the startup block in api/config.py unconditionally restored the persisted default_workspace, so any container that had previously written settings.json would shadow the env var on the next start. The env var now wins when explicitly set, matching the documented priority order. (Closes #609, PR #610)
• Docker: workspace trust validation rejected subdirectories of DEFAULT_WORKSPACE — resolve_trusted_workspace() only trusted paths under Path.home() or in the saved list; subpaths of a Docker volume mount like /data/workspace/myproject failed with "outside the user home directory". Added a third trust condition for paths under the boot-time DEFAULT_WORKSPACE, which was already validated at startup. (Closes #609, PR #610)

[v0.50.70] — 2026-04-16

Changed

• Chat transcript redesigned — unified --msg-rail/--msg-max CSS variables align all message elements on one column. User turns render as per-theme tinted cards. Thinking cards are bordered panels with gold rule. Inline code inherits --strong. Action toolbar fades in on hover. Error-prefixed assistant rows get [data-error="1"] red-accent card treatment. Day-change .msg-date-sep separators added. Transcript fades to transparent behind composer. (PR #587 by @aronprins)
• Approval and clarify cards as composer flyouts — cards slide up from behind the composer top edge rather than floating as disconnected banners. overflow:hidden outer + translateY inner animation clips travel. focus({preventScroll:true}) prevents autoscrolling. (PR #587 by @aronprins)

Fixed

• Streaming lifecycle stabilised — DOM order stays user → thinking → tool cards → response with no mid-stream jump. Live tool cards inserted inline before the live assistant row. Ghost empty assistant header suppressed on pure-tool turns. (PR #587 by @aronprins)
• Session reload persistence hardened — last-turn reasoning attached before s.save(), so hard-refresh right after a response preserves the thinking trace. role=tool rows preserved in S.messages. CLI-session tool-result fallback parses output envelopes and attaches snippets to matching cards. (PR #587 by @aronprins)
• Workspace panel first-paint flash fixed — [data-workspace-panel] attribute set at document parse time via inline script. (PR #587 by @aronprins)

Added

• docs/ui-ux/index.html — static inventory of every message-area element loading live static/style.css. (PR #587 by @aronprins)
• docs/ui-ux/two-stage-proposal.html — proposal page for the two-stage plan/execute flow (#536). (PR #587 by @aronprins)

[v0.50.69] — 2026-04-16

Fixed

• Docker: workspace file browser no longer appears empty on macOS — docker_init.bash now auto-detects the correct WANTED_UID and WANTED_GID from the mounted /workspace directory at startup. On macOS, host UIDs start at 501 (not 1000), so the default value of 1024 caused the container user to run as a different UID than the files, making the workspace appear empty. The auto-detect reads stat -c '%u' on /workspace and uses it when no explicit WANTED_UID is set — falling back to 1024 if the path doesn't exist or returns 0 (root). Setting WANTED_UID explicitly in a .env file still takes full precedence. (Closes #569)
• Session message count inconsistency resolved — the topbar already correctly shows only visible messages (excluding role='tool' tool-call entries). The sidebar previously showed raw message_count which included tool messages, but PR #584 removed that display entirely — there is no longer any count displayed in the sidebar. No code change needed; documenting with regression tests. (Closes #579)

[v0.50.68] — 2026-04-16

Fixed

• Light theme: add/rename folder dialogs now use correct light colors — .app-dialog, .app-dialog-input, .app-dialog-btn, .app-dialog-close, and .file-rename-input had hardcoded dark-mode backgrounds with no light-theme overrides. Dialog backgrounds, borders, and inputs now adapt correctly to the light theme. (Closes #594)
• Workspace panel no longer snaps open then immediately closed — on page load, boot.js was restoring the panel open/closed state from localStorage before knowing whether the loaded session has a workspace. syncWorkspacePanelState() then snapped it closed, causing a visible jank. The restore is now deferred until after loadSession() and only applied when the session actually has a workspace. (Closes #576)
• Model dropdown reflects CLI model changes without server restart — /api/models was returning a startup-cached snapshot of config.yaml. The fix adds a mtime-based reload check: if config.yaml has changed on disk since last read, the cache is refreshed before building the model list. Page refresh now picks up CLI model changes immediately. (Closes #585)
• Docker Compose: macOS users guided on UID/GID setup — the docker-compose.yml comment for WANTED_UID/WANTED_GID now explicitly notes that macOS UIDs start at 501 (not 1000) and tells users to run id -u/id -g. Also clarifies that the default ${HOME}/.hermes volume mount works on both macOS and Linux. (Closes #567)
• Voice transcription already shows "Transcribing…" spinner — issue #590 noted that no feedback was shown between pressing stop and text appearing. This was already implemented (setComposerStatus('Transcribing…') fires before the fetch in _transcribeBlob). Confirmed and documented; closing as already fixed.

[v0.50.67] — 2026-04-16

Added

• Subpath mount support — Hermes WebUI can now be served behind a reverse proxy at any subpath (e.g. /hermes-webui/ via Tailscale Serve, nginx, or Caddy). A dynamic <base href> is injected as the first script in <head>, and all client-side URL references are converted from absolute to relative. The server-side route handlers are unchanged. No configuration needed — works transparently for both root (/) and subpath deployments. (PR #588 by @vcavichini)

[v0.50.66] — 2026-04-16

Fixed

• WebUI agent now receives full runtime route from provider resolver — previously api_mode, acp_command, acp_args, and credential_pool were not forwarded into AIAgent.__init__() in the WebUI streaming path. Users switching between Codex accounts or using credential pools found the switch worked in the CLI but not the WebUI. The fix passes all four fields from the resolved runtime into the agent constructor. (PR #582 by @suinia)

[v0.50.65] — 2026-04-16

Fixed

• HERMES_WEBUI_SKIP_ONBOARDING=1 now works unconditionally — previously the env var was gated on chat_ready=True, so hosting providers (e.g. Agent37) that set it but hadn't yet wired up a provider key would still see the wizard on every page load. The var is now honoured as a hard operator override regardless of chat_ready. If you set it, the wizard is gone. (Fixes skip-onboarding regression)
• Onboarding wizard can no longer overwrite config or env files when SKIP_ONBOARDING is set — apply_onboarding_setup now checks the env var first and refuses to touch config.yaml or .env if it is set. This is a belt-and-suspenders guard: even if a stale JS bundle somehow triggers the setup endpoint while SKIP_ONBOARDING is active, no files are written.

[v0.50.64] — 2026-04-16

Changed

• Sidebar session items decluttered — the meta row under every session title (message count, model slug, and source-tag badge) has been removed. Each session now renders as a single line: title + relative-time bucket headers. The visible session count at a typical viewport height roughly doubles. The source_tag field is still populated on the session object and available for a future tooltip or filter facet. [SYSTEM:]-prefixed gateway titles fall back to "Session" rather than leaking system-prompt content. Removes _formatSourceTag(), .session-meta, cli-session, [data-source=…], _SOURCE_DISPLAY, and the associated CSS badge rules. (PR #584 by @aronprins)

[v0.50.63] — 2026-04-16

Fixed

• Onboarding wizard no longer fires for non-standard providers — providers outside the quick-setup list (minimax-cn, deepseek, xai, gemini, etc.) were always evaluated as chat_ready=False because _provider_api_key_present() only knew the four built-in env-var names. Those users saw the wizard on every page load and risked config.yaml being silently overwritten if the provider dropdown defaulted. The fix adds a hermes_cli.auth.get_auth_status() fallback covering every API-key provider in the full registry, and tightens the frontend guard so an unchanged unsupported-provider form never POSTs. (Fixes #572, PR #575)
• MCP server toolsets now included in WebUI agent sessions — previously the WebUI read platform_toolsets.cli directly from config.yaml, which only carries built-in toolset names. MCP server names (tidb, kyuubi, etc.) were silently dropped, so MCP tools configured via ~/.hermes/config.yaml were unavailable in chat. The fix delegates to hermes_cli.tools_config._get_platform_tools() — the same code the CLI uses — which merges all enabled MCP servers automatically. Falls back gracefully when hermes_cli is unavailable. (PR #574 by @renheqiang)

[v0.50.62] — 2026-04-16

Fixed

• Docker startup no longer hard-exits when hermes-agent source is not mounted — previously docker_init.bash would call error_exit if the agent source directory was missing, preventing the container from starting at all. Users running a minimal docker run without the two-container compose setup hit this immediately. Now the script checks for the directory and pyproject.toml first, prints a clear warning explaining reduced functionality, and continues startup. The WebUI already has try/except fallbacks throughout for when hermes-agent is unavailable. (Fixes #570, PR #573)

[v0.50.61] — 2026-04-16

Added

• Office file attachments — .xls, .xlsx, .doc, and .docx files can now be selected via the attach button. The file picker's accept attribute is extended to include Office MIME types, and the backend MIME map is updated so these files are served with correct content-type headers when accessed through the workspace file browser. Files are saved as binary to the workspace; the AI can reference them by name the same way it does PDFs. (PR #566 by @renheqiang)

[v0.50.60] — 2026-04-16

Changed

• Test robustness — two onboarding setup tests (test_setup_allowed_with_confirm_overwrite, test_setup_allowed_when_no_config_exists) now skip gracefully when PyYAML is not installed in the test environment, matching the pattern already used in test_onboarding_mvp.py. No production code changed. (PR #564)

[v0.50.59] — 2026-04-16

Fixed

• False "Connection lost" message after settled stream — the UI no longer injects a fake **Error:** Connection lost assistant message when an SSE connection drops after the stream already completed normally. The fix tracks terminal stream states (done, stream_end, cancel, apperror) and, on a disconnect, fetches /api/session to confirm the session is settled before silently restoring it instead of calling the error path. Real failures still go through the error path as before. (Fixes #561, PR #562 by @halmisen)

[v0.50.58] — 2026-04-16

Fixed

• Custom provider name in model dropdown — when a custom_providers entry in config.yaml has a name field (e.g. Agent37), the model picker now shows that name as the group header instead of the generic Custom label. Multiple named providers each get their own group. Unnamed entries still fall back to Custom. Brings the web UI into parity with the terminal's provider display. (Fixes #557)

[v0.50.57] — 2026-04-15

Added

• Auto-generated session titles — after the first exchange, a background thread generates a concise title from the first user message and assistant reply, replacing the default first-message substring. Updates live in the UI via a new title SSE event. Manual renames are preserved; generation only runs once per session. Includes MiniMax token budget handling and a local heuristic fallback. (Fixes #495, PR #535 by @franksong2702)

Changed

• SSE stream termination — streams now end with stream_end instead of done so the background title generation thread has time to emit the title update before the client disconnects.

[v0.50.55] — 2026-04-15

Fixed

• Docker honcho extra — docker_init.bash now installs hermes-agent[honcho] so honcho-ai is included in the venv on every fresh Docker build. Fixes "Honcho session could not be initialized." errors on rebuilt containers. (Fixes #553)
• Version badge — index.html version badge corrected to v0.50.55 (was missing the bump for this release).

[v0.50.54] — 2026-04-15

Changed

• OpenRouter model list — updated to 14 current models across 7 providers. All slugs verified live against the OpenRouter catalog. Removed o4-mini, old Gemini 2.x entries, and Llama 4. Added Claude Opus 4.6, GPT-5.4, Gemini 3.1 Pro Preview, Gemini 3 Flash Preview, DeepSeek R1, Qwen3 Coder, Qwen3.6 Plus, Grok 4.20, and Mistral Large. Both Claude 4.6 and 4.5 generations preserved. Fixed grok-4-20 → grok-4.20 slug and Gemini -preview suffixes.

[v0.50.53] — 2026-04-15

Fixed

• Custom endpoint slash model IDs — model IDs with vendor prefixes that are intrinsic (e.g. zai-org/GLM-5.1 on DeepInfra) are now preserved when routing to a custom base_url endpoint. Previously, all prefixed IDs were stripped, causing model_not_found errors on providers that require the full vendor/model format. Known provider namespaces (openai/, google/, anthropic/, etc.) are still stripped as before. (Fixes #548, PR #549 by @eba8)

[v0.50.52] — 2026-04-15

Fixed

• Simultaneous approval requests — parallel tool calls that each require approval no longer overwrite each other. _pending is now a list per session; each entry gets a stable approval_id (uuid4) so /api/approval/respond can target a specific request. The UI shows a "1 of N pending" counter when multiple approvals are queued. Backward-compatible with old agent versions and old frontend clients. Adds 14 regression tests. (Fixes #527)

[v0.50.51] — 2026-04-15

Fixed

• Orphaned tool messages — conversation histories containing role: tool messages with no matching tool_call_id in a prior assistant message are now silently stripped before sending to the provider API. Fixes 400 errors from strictly-conformant providers (Mercury-2/Inception, newer OpenAI models). Adds 13 regression tests. (Fixes #534)

[v0.50.50] — 2026-04-15

Fixed

• Code block syntax highlighting — Prism theme now follows the active UI theme. Light mode uses the default Prism light theme; dark mode uses prism-tomorrow. Theme swaps happen immediately on toggle including on first load. Adds id="prism-theme" to the Prism CSS link so JavaScript can locate and swap it. (Closes #505, PR #530 by @mariosam95)

[v0.50.49] — 2026-04-15

Fixed

• IME composition — isComposing guard added to every Enter keydown handler so CJK/Japanese/Korean input method users never accidentally send mid-composition (fixes #531). Covers chat composer, command dropdown, session rename, project create/rename, app dialog, message edit, and workspace rename. Adds 3 regression tests. (PR #537 by @vansour)

[v0.50.48] fix: toast when model is switched during active session (#419)

Synthesized from PRs #516 (armorbreak001), #517 and #518 (cloudyun888).

When a user switches the model via the model picker while a session already has messages, a 3-second toast now reads: "Model change takes effect in your next conversation." This avoids the confusing situation where the dropdown shows the new model but the current conversation continues with the original one.

The toast fires from modelSelect.onchange in static/boot.js, after the existing provider-mismatch warning. It checks S.messages.length > 0 (the reliable in-memory array, always initialized by loadSession). The showToast call is guarded with typeof for safety during boot.

Key differences from submitted PRs: placement in boot.js onchange (covers all selection paths including chip dropdown, since selectModelFromDropdown calls sel.onchange), and uses S.messages not S.session.messages.

4 new tests in tests/test_provider_mismatch.py::TestModelSwitchToast.

Total tests: 1272 (was 1268)

[v0.50.47] fix/feat: batch fixes — root workspace, custom providers, cron cache, system theme

Synthesized from PRs #506, #507, #508, #509, #510, #514, #515, #519, #521.

Fixes

Allow /root as a workspace path (PRs #510, #521 by @ccqqlo) Removes /root from _BLOCKED_SYSTEM_ROOTS in api/workspace.py, so deployments running as root (Docker, VPS) can set /root as their workspace without a "system directory" rejection.

Guard against split on missing [Attached files:] (PR #521 by @ccqqlo) base_text extraction in api/streaming.py now guards: msg_text.split(...)[0] if ... in msg_text else msg_text. Previously split on the empty case returned an empty string, causing attachment-matching to silently fail on messages with no attachments.

custom_providers models visible regardless of active provider (#515, #519 by @shruggr, @cloudyun888) get_available_models() in api/config.py no longer discards the 'custom' provider from detected_providers when the user has custom_providers entries in config.yaml. Previously, switching active_provider away from 'custom' hid all custom model definitions from the picker.

Cron skill picker cache invalidated on form open and skill save (PRs #507, #508 by @armorbreak001) toggleCronForm() now unconditionally nulls _cronSkillsCache before fetching, so skills created in the same session appear immediately. submitSkillSave() also nulls _cronSkillsCache after a successful write, mirroring the existing _skillsData = null pattern. Fixes #502.

Features

System (auto) theme following OS prefers-color-scheme (#504 / PRs #506, #509, #514 by @armorbreak001, @cloudyun888) New "System (auto)" option in the theme picker follows the OS dark/light preference via window.matchMedia. Changes:

• static/boot.js: _applyTheme(name) helper resolves 'system' via matchMedia, sets data-theme, and registers a MQ change listener for live OS tracking. loadSettings() calls _applyTheme() instead of direct assignment.
• static/index.html: flicker-prevention script resolves 'system' before first paint. Adds "System (auto)" as first theme option. onchange calls _applyTheme().
• static/commands.js: adds 'system' to valid /theme names.
• static/panels.js: _settingsThemeOnOpen reads from localStorage (preserves 'system' string). _revertSettingsPreview calls _applyTheme().
• static/i18n.js: cmd_theme description lists 'system' first in all 5 locales.

Tests

22 new tests in tests/test_batch_fixes.py.

Total tests: 1268 (was 1246)

[v0.50.46] feat: clarify dialog flow and refresh recovery (#520)

Adds a full clarify dialog UX for interactive agent questions — modeled after the approval card but for free-form clarification prompts.

Backend

New api/clarify.py module with a per-session pending queue backed by threading.Event unblocking, gateway notify callbacks, duplicate deduplication while unresolved, and resolve/clear helpers.

Three new HTTP endpoints in api/routes.py:

• GET /api/clarify/pending — poll for pending clarify prompt
• POST /api/clarify/respond — resolve the pending prompt
• GET /api/clarify/inject_test — loopback-only, for automated tests

api/streaming.py wires clarify_callback into AIAgent.run_conversation(). Emits clarify SSE events; blocks the tool flow until the user responds, times out (120s), or the stream is cancelled. Also adds a 409 guard on chat/start so page-refresh races return the active stream id instead of starting a duplicate.

Frontend

static/messages.js: clarify card with numbered choices, Other button, and free-text input. Composer is locked while clarify is active. DOM self-heals if the card node is removed during a rerender. SSE clarify event listener plus 1.5s fallback polling. Session switch and reconnect start/stop clarify polling. 409 conflict flow reattaches to the active stream and queues the user message. CLARIFY_MIN_VISIBLE_MS = 30000 timer dedup mirrors the approval card pattern.

static/ui.js: lockComposerForClarify() / unlockComposerForClarify() with saved-state restore. updateSendBtn() respects the disabled state.

static/sessions.js: loadSession() starts/stops clarify polling on switch and inflight reattach.

static/index.html / static/style.css: clarify card markup with ARIA roles and full responsive/mobile styles.

static/i18n.js: 6 new keys in all 5 locales (en, es, de, zh-Hans, zh-Hant).

Tests

• tests/test_clarify_unblock.py: 14 new tests covering queue resolution, notify callbacks, clear-on-cancel, and all three HTTP endpoints.
• tests/test_sprint30.py: 31 new clarify tests (HTML markup, CSS classes, i18n keys, messages.js functions, streaming registration flags).
• tests/test_sprint36.py: expand search window for setBusy check after additional stopClarifyPolling() calls push it past the old 800-char limit.

Total tests: 1246 (was 1209)

Co-authored-by: franksong2702

[v0.50.45] fix: suppress N/A source_tag in session list (#429)

Feishu and WeChat sessions (and any session with an unrecognised or legacy source value in hermes-agent's state.db) were showing "N/A" or raw tag strings in the session list sidebar.

Three fixes in static/sessions.js:

1. _formatSourceTag() now returns null for unrecognised tags instead of the raw string. Known platforms (telegram, discord, slack, feishu, weixin, cli) still display their human-readable label. Unknown/legacy values are silently suppressed.

2. The metaBits push is guarded: stores the result in _stLabel and only pushes if it is non-null. Prevents null or unrecognised platform names from appearing in the session metadata line.

3. The [SYSTEM:] title fallback now uses _SOURCE_DISPLAY[s.source_tag] || 'Gateway' — the raw s.source_tag middle term is removed so a session whose source is "N/A" does not use that as its visible title.

No backend changes. The upstream issue (hermes-agent not reliably setting source for older Feishu/WeChat sessions) is tracked separately.

7 new tests in tests/test_issue429.py. Updated 1 existing test in tests/test_sprint40_ui_polish.py to match the new guarded push pattern.

• Total tests: 1202 (was 1195)

[v0.50.44] fix: code-in-table CSS sizing + markdown image rendering (#486, #487)

CSS: inline code inside table cells (fixes #486)

Inline `code` spans inside <td> and <th> cells were rendering too large relative to the cell height — the .msg-body code rule sets 12.5px which sits awkward against the table's 12px base font.

Fix: added two targeted rules in static/style.css:

.msg-body td code,.msg-body th code { font-size:0.85em; padding:1px 4px; vertical-align:baseline; }
.preview-md td code,.preview-md th code { font-size:0.85em; padding:1px 4px; vertical-align:baseline; }

Covers both the chat message surface (.msg-body) and the markdown preview panel (.preview-md).

JS renderer: ![alt](url) image syntax (fixes #487)

Standard markdown image syntax was not handled by renderMd(). The ! was left as a stray character and [alt](url) was consumed by the link pass, producing ! <a href="url">alt</a> instead of an <img>.

Fix: added an image pass to both inlineMd() (for images in table cells, list items, blockquotes, headings) and the outer renderMd() pipeline (for images in plain paragraphs):

• Regex: ![alt](https?://url) — only http:// and https:// URIs accepted; javascript: and data: URIs cannot match.
• Alt text passes through esc() — XSS-safe.
• URL double-quotes percent-encoded to %22 — attribute breakout prevented.
• Reuses .msg-media-img class — same click-to-zoom and max-width styling as agent-emitted MEDIA: images.
• img added to SAFE_TAGS allowlist so the generated <img> is not escaped.
• In inlineMd(): image pass runs while the _code_stash is still active, so ![alt](url) inside a backtick span stays protected and is never rendered as an image. A new _img_stash (\x00G) protects rendered <img> tags from the autolink pass touching src= values.

Tests

45 new tests in tests/test_issue486_487.py:

• 13 CSS source checks and rendering tests for #486

• 22 JS source checks and rendering tests for #487

• 10 combination edge cases (code + image + link all in same table)

• Total tests: 1195 (was 1150)

[v0.50.43] fix: markdown link rendering + KaTeX CSP fonts

Markdown link rendering — renderMd() in static/ui.js (PR #475, fixes #470)

Three related bugs fixed:

1. Double-linking via autolink pass — [label](url) was converted to <a href="...">, then the bare-URL autolink pass re-matched the URL sitting inside href="..." and wrapped it in a second <a> tag. Fixed with three stash/restore layers: \x00L (inlineMd labeled links), \x00A (existing <a> tags before outer link pass), \x00B (existing <a> tags before autolink pass).

2. esc() on href values corrupts query strings — esc() is HTML-entity encoding; applying it to URLs converted & → & in query strings. Removed esc() from href values in all three locations. Display text (link labels) still uses esc() for XSS safety. " in URLs replaced with %22 (URL encoding) to close the attribute-injection vector identified during review.

3. Backtick code spans inside **bold** rendered as <code> — esc() was applied to code spans after bold/italic processing. Added \x00C stash to protect backtick spans in inlineMd() before bold/italic regex runs.

Security audit: javascript: injection blocked by https?:// prefix requirement. " attribute breakout fixed by .replace(/"/g, '%22'). Label/display text still HTML-escaped.

24 tests in tests/test_issue470.py.

KaTeX CSP font-src (fixes #477)

api/helpers.py CSP font-src now includes https://cdn.jsdelivr.net so KaTeX math rendering fonts load correctly. Previously ~50 CSP font-blocking errors appeared in the console on any page with math content. The CDN was already allowed in script-src and style-src for KaTeX JS/CSS — this extends the same allowance to fonts.

3 tests in tests/test_issue477.py.

• Total tests: 1150 (was 1130)

[v0.50.42] fix: session display + model UX polish (sprint 42)

Context indicator always shows latest usage (PR #471, fixes #437) The context ring/indicator in the composer footer was reading token counts and cost from the stored session snapshot with || — meaning stale non-zero values from previous turns always won over a fresh 0 from the current turn. Replaced all six field merges with a _pick(latest, stored, dflt) helper that correctly prefers the latest usage when it's a real value (including 0).

System prompt no longer leaks as gateway session title (PR #472, fixes #441) Telegram, Discord, and CLI gateway sessions inject a system message before any user turn. When the session title is set from this message, the sidebar shows [SYSTEM: The user has inv... instead of a meaningful name. Added a guard in _renderOneSession(): if cleanTitle starts with [SYSTEM:, replace it with the platform display name (Telegram session, Discord session, etc.).

Thinking/reasoning panel persists across page reload (PR #473, fixes #427) The full chain-of-thought from Claude, Gemini, and DeepSeek thinking models was lost after streaming completed and on every page reload. Two-part fix:

• api/streaming.py: on_reasoning() now accumulates _reasoning_text; before the session is serialised at stream end, _reasoning_text is injected into the last assistant message so it's stored in the session JSON
• static/messages.js: in the done SSE handler, reasoningText is also patched onto the last assistant message as a belt-and-suspenders client-side fallback

Custom model ID input in model picker (PR #474, fixes #444) Users who need a model not in the curated list (~30 models) can now type any model ID directly in the dropdown. A text input at the bottom of the model picker lets users enter any string (e.g. openai/gpt-5.4, deepseek/deepseek-r2, or any provider-prefixed ID) and press Enter or click + to use it immediately. i18n keys added to en, es, zh.

• Total tests: 1130 (was 1117)

[v0.50.41] feat(ui): render MEDIA: images inline in web UI chat (fixes #450)

When the agent outputs MEDIA:<path> tokens — screenshots from the browser tool, generated images, vision outputs — the web UI now renders them inline in the chat, the same way Claude.ai handles images. No more relaying screenshots through Telegram.

How it works:

• Local image path (MEDIA:/tmp/screenshot.png): rendered as <img> via /api/media?path=...
• HTTP(S) URL to image (MEDIA:https://example.com/img.png): <img> directly from the URL
• Non-image file (MEDIA:/tmp/report.pdf): styled download link (📎 filename)
• Click any inline image to toggle full-size zoom

New endpoint — GET /api/media?path=<encoded-path>:

• Path allowlist: ~/.hermes/, /tmp/, active workspace — covers all agent output locations
• Auth-gated: requires valid session cookie when auth is enabled
• Inline image MIME types: PNG, JPEG, GIF, WebP, BMP
• SVG always served as download attachment (XSS prevention)
• RFC 5987-compliant Content-Disposition headers (handles Unicode filenames)
• Cache-Control: private, max-age=3600

Security:

• Original version had ~ (entire home dir) as an allowed root — fixed by independent reviewer
• Restricted to ~/.hermes/, /tmp/, and active workspace only
• Path.resolve() + commonpath checks prevent symlink traversal

Changes:

• api/routes.py: _handle_media() handler + /api/media route

• static/ui.js: MEDIA: stash in renderMd() (runs before fence_stash, stash token \x00D)

• static/style.css: .msg-media-img (480px max-width, zoom-on-click), .msg-media-link

• tests/test_media_inline.py: 19 new tests (static analysis + integration)

• Total tests: 1117 (was 1098)

[v0.50.40] feat: session UI polish + parallel test isolation

Session sidebar improvements:

• static/sessions.js + style.css: Hide session timestamps to give titles full available width — no more title truncation from inline timestamps (PR #449)
• static/style.css: Active session title now uses var(--gold) theme variable instead of hardcoded #e8a030 — adapts correctly across all 7 themes (PR #451, fixes #440)
• api/models.py + api/gateway_watcher.py: Return None instead of the string 'unknown' for missing gateway session model — Telegram sessions no longer show telegram · unknown (PR #452, fixes #443)
• static/style.css + static/sessions.js: Mute Telegram badge from saturated #0088cc to rgba(0, 136, 204, 0.55). Add _formatSourceTag() helper mapping platform IDs to display names (telegram → via Telegram) (PR #453, fixes #442)

Bug fixes:

• api/config.py resolve_model_provider(): Strip provider prefix from model ID when a custom base_url is configured (openai/gpt-5.4 → gpt-5.4) — fixes broken chats after switching to a custom endpoint (PR #454, fixes #433)
• static/panels.js switchToProfile(): Apply profile default workspace to new session created during profile switch — workspace chip no longer shows "No active workspace" after switching profiles mid-conversation (PR #455, fixes #424)

Test infrastructure:

• tests/conftest.py + tests/_pytest_port.py (new): Auto-derive unique port and state dir per worktree from repo path hash (range 20000-29999). Running pytest in two worktrees simultaneously no longer causes port conflicts. All 43 test files updated from hardcoded BASE = "http://127.0.0.1:8788" to from tests._pytest_port import BASE (PR #456)

• Total tests: 1098 (was 1078)

[v0.50.39] fix: orphan gateway sessions + first-password-enablement session continuity

Two bug fixes:

PR #423 — Fix orphan gateway sessions in sidebar (@aronprins, fix by maintainer) gateway_watcher.py's _get_agent_sessions_from_db() was missing the HAVING COUNT(m.id) > 0 clause that get_cli_sessions() already had. Sessions with no messages (e.g. created then abandoned before any turns) would appear in the sidebar via the SSE watcher stream even after the initial page load filtered them out. One-line SQL fix applied to both query paths.

PR #434 — First-password-enablement session continuity (@SaulgoodMan-C) When a user enables a password for the first time via POST /api/settings, the current browser session was being terminated — requiring the user to log in again immediately after setting their password. Fix: the response now includes auth_enabled, logged_in, and auth_just_enabled fields, and issues a hermes_session cookie when auth is first enabled, so the browser remains logged in. Also: legacy assistant_language key is now dropped from settings on next save. New i18n keys for password replacement/keep-existing states (en, es, de, zh, zh-Hant).

• api/config.py: _SETTINGS_LEGACY_DROP_KEYS removes assistant_language on load

• api/routes.py: first-password-enable session continuity with auth_just_enabled flag

• static/panels.js: _setSettingsAuthButtonsVisible() + _applySavedSettingsUi() helpers

• static/i18n.js: password state i18n keys across 5 locales

• tests/test_sprint45.py: 3 new integration tests (auth continuity + legacy key cleanup)

• Total tests: 1078 (was 1075)

[v0.50.38] feat: mobile nav cleanup, Prism syntax highlighting, zh-CN/zh-Hant i18n

Three community contributions combined:

PR #425 — Remove mobile bottom nav (@aronprins) The fixed iOS-style bottom navigation bar on phones has been removed. The sidebar drawer tabs already handle all navigation — the bottom nav was redundant and consumed ~56px of vertical chat space. test_mobile_layout.py updated with test_mobile_bottom_nav_removed() and new sidebar nav coverage tests.

PR #426 — Prism syntax highlighting with light + dark theme token colors (@GiggleSamurai) Fenced code blocks now emit class="language-{lang}" on <code> elements, enabling Prism's autoloader to apply token-level syntax highlighting. Added 36-line :root[data-theme="light"] token color overrides scoped to light theme only; dark/dim/monokai/nord themes unaffected. Background guard uses var(--code-bg) !important to prevent Prism's dark background from overriding theme variables. 2 new regression tests in test_issue_code_syntax_highlight.py.

PR #428 — zh-CN/zh-Hant i18n hardening (@vansour) Pluggable resolvePreferredLocale() function with smart zh-CN/zh-SG/zh-TW/zh-HK variant mapping. Full zh-Simplified and zh-Traditional locale blocks added to i18n.js. Login page locale routing updated in api/routes.py (_resolve_login_locale_key() helper). Hardcoded strings in panels.js cron UI extracted to i18n keys. 3 new test files: test_chinese_locale.py, test_language_precedence.py, test_login_locale.py.

• Total tests: 1075 (was 1063)

[v0.50.37] fix(onboarding): skip wizard when Hermes is already configured

Fixes #420 — existing Hermes users with a valid config.yaml were shown the first-run onboarding wizard on every WebUI load because the only completion gate was settings.onboarding_completed in the WebUI's own settings file. Users who configured Hermes via the CLI before the WebUI existed had no such flag, so the wizard always fired and could silently overwrite their working config.

Changes:

1. api/onboarding.py get_onboarding_status(): auto-complete when config.yaml exists AND chat_ready=True. Existing configured users are never shown the wizard.
2. api/onboarding.py apply_onboarding_setup(): refuse to overwrite an existing config.yaml without confirm_overwrite=True in the request body. Returns {error: "config_exists", requires_confirm: true} for the frontend to handle.
3. static/index.html: "Skip setup" button added to wizard footer — users are never trapped in the wizard.
4. static/onboarding.js: skipOnboarding() calls /api/onboarding/complete without modifying config, then closes the overlay.
5. static/boot.js: Escape key now dismisses the onboarding overlay.
6. static/i18n.js: onboarding_skip / onboarding_skipped keys added to en + es locales.
7. tests/test_onboarding_existing_config.py: 8 new unit tests covering gate logic and overwrite guard.

• Total tests: 1063 (was 1055)

[v0.50.36] fix: workspace list cleaner — allow own-profile paths, remove brittle string filter

Two bugs in _clean_workspace_list() caused workspace additions to silently disappear on the next load_workspaces() call, breaking test_workspace_add_no_duplicate and test_workspace_rename (and potentially causing real-world workspace list corruption):

Bug 1 — Brittle string filter removed: if 'test-workspace' in path or 'webui-mvp-test' in path: continue dropped any workspace path containing those substrings. In the test server, TEST_WORKSPACE is ~/.hermes/profiles/webui/webui-mvp-test/test-workspace, so every workspace added during tests was silently discarded on the next load_workspaces() call. The p.is_dir() check already handles genuinely non-existent paths — the string filter was redundant and harmful.

Bug 2 — Cross-profile filter was too broad: if p is under ~/.hermes/profiles/: skip was designed to block cross-profile workspace leakage, but it also removed paths under the current profile's own directory (e.g. ~/.hermes/profiles/webui/...). Fixed: now only skips paths under profiles/ that are NOT under the current profile's own hermes_home.

• api/workspace.py: remove string-match filter; fix cross-profile check to allow own-profile paths
• All 1055 tests now pass (was 1053 pass + 2 fail)

[v0.50.35] fix: workspace trust boundary — cross-platform, multi-workspace support

v0.50.34's workspace trust check was too restrictive: it required all workspaces to be under DEFAULT_WORKSPACE (/home/hermes/workspace), which blocked every profile-specific workspace (~/CodePath, ~/hermes-webui-public, ~/WebUI, ~/Camanji, etc.) and prevented switching between workspaces at all.

Replaced with a three-layer model that works cross-platform and supports multiple workspaces per profile:

1. Blocklist — /etc, /usr, /var, /bin, /sbin, /boot, /proc, /sys, /dev, /root, /lib, /lib64, /opt/homebrew always rejected, closing the original CVSS 8.8 vulnerability
2. Home-directory check — any path under Path.home() is trusted; Path.home() is cross-platform (~/... on Linux/macOS, C:\\Users\\... on Windows); allows all profile workspaces simultaneously since they don't need to share a single ancestor
3. Saved-workspace escape hatch — paths already in the profile's saved workspace list are trusted regardless of location, covering self-hosted deployments with workspaces outside home (/data/projects, /opt/workspace, etc.)

• api/workspace.py: rewritten resolve_trusted_workspace() with the three-layer model
• tests/test_sprint3.py: updated error-message assertions from "trusted workspace root" → "outside" (covers both old and new error strings)
• 1053 tests total (unchanged)

[v0.50.34] fix(workspace): restrict session workspaces to trusted roots [SECURITY] (#415)

Session creation, update, chat-start, and workspace-add endpoints accepted arbitrary caller-supplied workspace paths. An authenticated caller could repoint a session to any directory the process could access, then use normal file read/write APIs to operate on attacker-chosen locations. CVSS 8.8 High (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

• api/workspace.py: new resolve_trusted_workspace(path) helper — resolves path, checks existence + is_dir, enforces path.relative_to(_BOOT_DEFAULT_WORKSPACE) containment; requests outside the WebUI workspace root fail with 400
• api/routes.py: apply resolve_trusted_workspace() to all four entry points — POST /api/session/new, POST /api/session/update, POST /api/chat/start (workspace override), POST /api/workspaces/add
• tests/test_sprint3.py, tests/test_sprint5.py: regression tests for rejected outside-root paths on all four entry points; existing workspace tests updated to use trusted child directories
• tests/test_sprint1.py, tests/test_sprint4.py, tests/test_sprint13.py: aligned to new trusted-root contract
• Fix: use _BOOT_DEFAULT_WORKSPACE (respects HERMES_WEBUI_DEFAULT_WORKSPACE env for test isolation) rather than _profile_default_workspace() (reads agent terminal.cwd which may differ)
• Original PR by @Hinotoi-agent (cherry-picked; branch was 6 commits behind master)
• 1053 tests total (up from 1051; 2 pre-existing test_sprint5 isolation failures on master, not introduced by this PR)

[v0.50.33] fix: workspace panel close button — no duplicate X on desktop, mobile X respects file preview (#413)

Bug 1 — Duplicate X on desktop: #btnClearPreview (the X icon) was always visible regardless of panel state, so desktop browse mode showed both the chevron collapse button and the X simultaneously. Fixed in syncWorkspacePanelUI(): on non-compact (desktop) viewports, clearBtn.style.display is set to none when no file preview is open, and cleared (shown) when a preview is active.

Bug 2 — Mobile X collapsed the whole panel instead of dismissing the file: .mobile-close-btn was wired to closeWorkspacePanel() directly, bypassing the two-step close logic. Fixed by changing onclick to handleWorkspaceClose(), which calls clearPreview() first if a file is open, and falls through to closeWorkspacePanel() otherwise.

Also: widened the test_server_delete_invalidates_index window from 600 → 1200 chars to accommodate the session_id validation guards added in v0.50.32 (#412).

• static/boot.js: syncWorkspacePanelUI() sets clearBtn.style.display based on hasPreview when !isCompact
• static/index.html: .mobile-close-btn onclick changed from closeWorkspacePanel() to handleWorkspaceClose()
• tests/test_sprint44.py: 10 new regression tests covering both fixes
• tests/test_mobile_layout.py: updated to accept handleWorkspaceClose() as valid onclick
• tests/test_regressions.py: widened delete handler window to 1200 chars
• 1051 tests total (up from 1041)

[v0.50.32] fix(sessions): validate session_id before deleting session files [SECURITY] (#409)

/api/session/delete accepted arbitrary session_id values from the request body and built the delete path directly as SESSION_DIR / f"{sid}.json". Because pathlib discards the prefix when sid is an absolute path, an attacker could supply /tmp/victim and cause the server to unlink victim.json outside the session store. Traversal-style values (../../etc/target) were also accepted. CVSS 8.1 High (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).

• api/routes.py: validate session_id against [0-9a-z_]+ allowlist (covers uuid4().hex[:12] WebUI IDs and YYYYMMDD_HHMMSS_hex CLI IDs) before path construction; resolve candidate path and enforce path.relative_to(SESSION_DIR) containment before unlinking; only invalidate session index on successful deletion path, not on rejected requests
• tests/test_sprint3.py: 2 new regression tests — absolute-path payload rejected and file preserved, traversal payload rejected and file preserved
• Original PR by @Hinotoi-agent (cherry-picked; branch was 4 commits behind master)
• 1041 tests total (up from 1039)

[v0.50.31] fix: delegate all live model fetching to agent's provider_model_ids()

_handle_live_models() in api/routes.py previously maintained its own per-provider fetch logic and returned not_supported for Anthropic, Google, and Gemini. Now it delegates entirely to the agent's hermes_cli.models.provider_model_ids() — the single authoritative resolver — and _fetchLiveModels() in ui.js no longer skips any provider.

What each provider now returns (live data where credentials are present, static fallback otherwise):

• anthropic — live from api.anthropic.com/v1/models (API key or OAuth token with correct beta headers)
• copilot — live from api.githubcopilot.com/models with required Copilot headers
• openai-codex — Codex OAuth endpoint → ~/.codex/ cache → DEFAULT_CODEX_MODELS
• nous — live from Nous inference portal
• deepseek, kimi-coding — generic OpenAI-compat /v1/models
• opencode-zen, opencode-go — OpenCode live catalog
• openrouter — curated static list (live returns 300+ which floods the picker)
• google, gemini, zai, minimax — static list (non-standard or Anthropic-compat endpoints)
• All others — graceful static fallback from _PROVIDER_MODELS

The hardcoded lists in _PROVIDER_MODELS remain as credential-missing / network-unavailable fallbacks. api/routes.py shrank by ~100 lines. Updated 2 tests to reflect the improved behavior.

• 1039 tests total (up from 1038)

[v0.50.30] fix: openai-codex live model fetch routes through agent's get_codex_model_ids()

_handle_live_models() was grouping openai-codex with openai and sending GET https://api.openai.com/v1/models — which returns 403 because Codex auth is OAuth-based via chatgpt.com, not a standard API key. The live fetch silently failed, so users only ever saw the hardcoded static list.

• api/routes.py: dedicated early-return branch for openai-codex that calls hermes_cli.codex_models.get_codex_model_ids() — the same resolver the agent CLI uses. Resolution order: live Codex API (if OAuth token available, hits chatgpt.com/backend-api/codex/models) → ~/.codex/ local cache (written by the Codex CLI) → DEFAULT_CODEX_MODELS hardcoded fallback. Users with a valid Codex session now get their exact subscription model list including any models not in the hardcoded list.
• api/routes.py: improved label generation for Codex model IDs (e.g. gpt-5.4-mini → GPT 5.4 Mini)
• tests/test_opencode_providers.py: structural regression test verifying the dedicated openai-codex branch exists and calls get_codex_model_ids()
• 1038 tests total (up from 1037)

[v0.50.29] fix: correct tool call card rendering on session load after context compaction (closes #401) (#402)

• static/sessions.js: replace the flat B9 filter in loadSession() with a full sanitization pass that builds origIdxToSanitizedIdx — each session.tool_calls[].assistant_msg_idx is remapped to the new sanitized-array position as messages are filtered; for tool calls whose empty-assistant host was filtered out, they attach to the nearest prior kept assistant
• static/sessions.js: set S.toolCalls=[] instead of pre-filling from session-level tool_calls — this lets renderMessages() use its fallback derivation from per-message tool_calls (which already carry correct indices into the sanitized message array); the fix eliminates the "200+ tool cards all on the wrong message" symptom on context-compacted session load
• tests/test_issue401.py: 8 regression tests — 4 static structural checks and 4 behavioural Node.js tests covering index remapping, multiple consecutive empty assistants, no-filtering pass-through, and tool-role message exclusion
• Original PR by @franksong2702 (cherry-picked onto master; branch was 31 commits behind)
• 1037 tests total (up from 1029)

[v0.50.28] fix: expand openai-codex model catalog to match DEFAULT_CODEX_MODELS

_PROVIDER_MODELS["openai-codex"] only listed codex-mini-latest, so profiles using the openai-codex provider (e.g. a CodePath profile with default: gpt-5.4) showed only one entry in the model dropdown. Updated to mirror the agent's authoritative DEFAULT_CODEX_MODELS list: gpt-5.4, gpt-5.4-mini, gpt-5.3-codex, gpt-5.2-codex, gpt-5.1-codex-max, gpt-5.1-codex-mini, codex-mini-latest. Added 2 regression tests.

• 1029 tests total (up from 1027)

[v0.50.27] feat: relative time labels in session sidebar (#394)

• static/sessions.js: new _sessionCalendarBoundaries() (DST-safe via new Date(y,m,d) construction), _localDayOrdinal(), _formatSessionDate() (includes year for dates from prior years); _formatRelativeSessionTime() now uses calendar midnight boundaries consistent with _sessionTimeBucketLabel() — no more label/bucket mismatch; all relative time strings call t() for localization; meta row only appended when non-empty (removes redundant group-header fallback); dead ONE_DAY constant removed
• static/style.css: add session-item.active .session-title{color:#1a5a8a} to light-theme block (fixes active title color in light mode)
• static/i18n.js: 11 new i18n keys (session_time_*) in both English and Spanish locale blocks; callable keys use arrow-function pattern consistent with existing n_messages
• tests/test_session_sidebar_relative_time.py: 5 tests — structural presence checks, behavioral Node.js tests via subprocess (yesterday/week boundary correctness, just now threshold, year-in-date for old sessions, full i18n key coverage for en+es)
• Original PR by @Jordan-SkyLF (two-pass review: blocking issues fixed in second commit)
• 1027 tests total (up from 1022)

[v0.50.26] fix(sessions): redact sensitive titles in session list and search responses [SECURITY] (#400)

• api/routes.py: apply _redact_text() to session titles in all four response paths — /api/sessions merged list, /api/sessions/search empty-q, title-match, and content-match; use dict(s) copy before mutating to avoid corrupting the in-memory session cache
• tests/test_session_summary_redaction.py: 2 integration tests verifying sk- prefixed secrets in session titles are redacted from both list and search endpoint responses
• Original PR by @Hinotoi-agent (note: fix commit had a display artifact — sk- prefix was visually rendered as *** in terminal output but the actual bytes were correct and the token was recognized by the redaction engine)
• 1022 tests total (up from 1020)

[v0.50.25] Multi-PR batch: mobile scroll, import timestamps, profile security, mic fallback

fix: restore mobile chat scrolling and drawer close (#397)

• static/style.css: min-height:0 on .layout and .main (flex shrink chain fix); -webkit-overflow-scrolling:touch, touch-action:pan-y, overscroll-behavior-y:contain on .messages
• static/boot.js: call closeMobileSidebar() on new-conversation button and Ctrl+K shortcut so the transcript is visible immediately after starting a chat
• tests/test_mobile_layout.py: 41 new lines covering CSS fixes and both JS call sites
• Original PR by @Jordan-SkyLF

fix: preserve imported session timestamps (#395)

• api/models.py: Session.save(touch_updated_at=True) — new flag; import_cli_session() accepts created_at/updated_at kwargs and saves with touch_updated_at=False
• api/routes.py: extract created_at/updated_at from get_cli_sessions() metadata and forward to import; post-import save also uses touch_updated_at=False
• tests/test_gateway_sync.py: +53 lines — integration test verifying imported session keeps original timestamp and sorts correctly; also fix session file cleanup in test finally block
• Original PR by @Jordan-SkyLF

fix(profiles): block path traversal in profile switch and delete flows (#399) [SECURITY]

• api/profiles.py: new _resolve_named_profile_home(name) — validates name via ^[a-z0-9][a-z0-9_-]{0,63}$ regex then enforces path containment via candidate.resolve().relative_to(profiles_root); use in switch_profile()
• api/profiles.py: add _validate_profile_name() call to delete_profile_api() entry
• api/routes.py: add _validate_profile_name() at HTTP handler level for both /api/profile/switch and /api/profile/delete
• tests/test_profile_path_security.py: 3 new tests — traversal rejected, valid name passes (cherry-picked from @Hinotoi-agent's PR, which was 62 commits behind master)

feat: add desktop microphone transcription fallback (#396)

• static/boot.js: detect _canRecordAudio; keep mic button enabled when MediaRecorder available even without SpeechRecognition; full MediaRecorder recording → /api/transcribe fallback path with proper cleanup and error handling

• api/upload.py: add transcribe_audio() helper — temp file, calls transcription_tools, always cleans up

• api/routes.py: add /api/transcribe POST handler — CSRF-protected, auth-gated, 20MB limit

• api/helpers.py: change Permissions-Policy microphone=() → microphone=(self) (required for getUserMedia)

• tests/test_voice_transcribe_endpoint.py: 87 new lines (3 tests with mocked transcription)

• tests/test_sprint19.py: regression guard for microphone Permissions-Policy

• tests/test_sprint20.py: 3 updated tests for new fallback capability checks

• Original PR by @Jordan-SkyLF

• 1020 tests total (up from 1003)

[v0.50.24] feat: opt-in chat bubble layout (closes #336)

• api/config.py: Add bubble_layout bool to _SETTINGS_DEFAULTS (default False) and _SETTINGS_BOOL_KEYS — new setting is opt-in, server-persisted, and coerced to bool on save
• static/style.css: 11 lines of CSS-only bubble layout — user rows align-self:flex-end / max-width 75%, assistant rows flex-start, all gated on body.bubble-layout class so the default full-width canvas is untouched; 700px responsive rule widens to 92%
• static/boot.js: Apply body.bubble-layout class from settings on page load; explicitly remove the class in the catch path so the feature stays off on API failure
• static/panels.js: Load checkbox state in loadSettingsPanel; write body.bubble_layout in saveSettings and immediately toggle body.bubble-layout class for live preview without a page reload
• static/index.html: Checkbox in the Appearance settings group, positioned between Show token usage and Show agent sessions
• static/i18n.js: English label + description keys; Spanish translations included in the same PR
• tests/test_issue336.py: 22 new tests covering config registration, JS class management in boot and panels, CSS selectors, HTML structure, i18n coverage for en+es, and API round-trip (default false, persist true/false, bool coercion)
• 1003 tests total (up from 981)

[v0.50.23] Add OpenCode Zen and Go provider support (fixes #362)

• api/config.py: Add opencode-zen and opencode-go to _PROVIDER_DISPLAY — providers now show human-readable names in the UI instead of raw IDs
• api/config.py: Add full model catalogs for both providers to _PROVIDER_MODELS — Zen (pay-as-you-go credits, 32 models) and Go (flat-rate $10/month, 7 models) now show the correct model list in the dropdown instead of falling through to the unknown-provider fallback
• api/config.py: Add OPENCODE_ZEN_API_KEY / OPENCODE_GO_API_KEY to the env-var fallback detection path — providers are correctly detected as authenticated when keys are set in .env
• tests/test_opencode_providers.py: 6 new tests covering display registration, model catalog registration, and env-var detection for both providers
• 985 tests total (up from 979)

[v0.50.22] Onboarding unblocked for reverse proxy / SSH tunnel deployments (fixes #390)

• api/routes.py: Onboarding setup endpoint now reads X-Forwarded-For and X-Real-IP headers before falling back to raw socket IP — reverse proxy (nginx/Caddy/Traefik) and SSH tunnel users are no longer incorrectly blocked
• Added HERMES_WEBUI_ONBOARDING_OPEN=1 env var escape hatch for operators on remote servers who control network access themselves
• Error message now includes the env var hint so users know how to unblock themselves
• 18 new tests covering all IP resolution paths (TestOnboardingIPLogic, TestOnboardingSetupEndpoint)

Living document. Updated at the end of every sprint. Repository: https://github.com/nesquena/hermes-webui

---

[v0.50.21] Live reasoning, tool progress, and in-flight session recovery (PR #367)

• Durable inflight reload recovery (static/ui.js, static/messages.js): saveInflightState / loadInflightState / clearInflightState backed by localStorage (hermes-webui-inflight-state key, per-session, 10-minute TTL). Snapshots are saved on every token, tool event, and tool completion, and cleared when the run ends/errors/cancels. On a full page reload with an active stream, loadSession() hydrates from the snapshot before calling attachLiveStream(..., {reconnecting:true}) — partial messages, live tool cards, and reasoning text all survive the reload.
• Live reasoning cards during streaming (static/ui.js, static/messages.js): The generic thinking spinner now upgrades to a live reasoning card when the backend streams reasoning text. _thinkingMarkup(text) and updateThinking(text) centralize the markup so the spinner and card share the same DOM slot. Works with models that emit reasoning via the agent's reasoning_callback or tool_progress_callback.
• tool_complete SSE events (api/streaming.py, static/messages.js): Tool progress callback now accepts the current agent signature on_tool(*cb_args, **cb_kwargs) — handles both the old 3-arg (name, preview, args) form and the new 4-arg (event_type, name, preview, args) form. tool.completed events transition live tool cards from running to done cleanly.
• In-flight session state stable across switches (static/messages.js, static/sessions.js): attachLiveStream refactored out of send() into a standalone function; partial assistant text mirrored into INFLIGHT state on every token; data-live-assistant DOM anchor preserved across renderMessages() calls so switching away and back doesn't lose or duplicate live output.
• Reload recovery (api/models.py, api/routes.py, api/streaming.py, static/sessions.js): active_stream_id, pending_user_message, pending_attachments, and pending_started_at now persisted on the session object before streaming starts and cleared on completion (or exception). /api/session returns these fields. After a page reload or session switch, loadSession() detects active_stream_id and calls attachLiveStream(..., {reconnecting:true}) to reattach to the live SSE stream.
• Session-scoped message queue (static/ui.js, static/messages.js): Global MSG_QUEUE replaced with SESSION_QUEUES keyed by session ID. Queued follow-up messages are associated with the session they were typed in and only drained when that session becomes idle — no cross-session bleed.
• newSession() idle reset (static/sessions.js): Sets S.busy=false, S.activeStreamId=null, clears the cancel button, resets composer status — ensures a fresh chat is immediately usable even if another session's stream is still running.
• Todos survive session reload (static/panels.js): loadTodos() now reads from S.session.messages (raw, includes tool-role messages) rather than S.messages (filtered display), so todo state reconstructed from tool outputs survives reloads.
  • 12 new regression tests in tests/test_regressions.py; 961 tests total (up from 949)

[v0.50.20] Silent error fix, stale model cleanup, live model fetching (fixes #373, #374, #375)

Fix: Chat no longer silently swallows agent failures (fixes #373)

• api/streaming.py: After run_conversation() completes, the server now checks whether the agent produced any assistant reply. If not (e.g., auth error swallowed internally, model unavailable, network timeout), it emits an apperror SSE event with a clear message and type (auth_mismatch or no_response) instead of silently emitting done. A _token_sent flag tracks whether any streaming tokens were sent.
• static/messages.js: The done handler has a belt-and-suspenders guard — if done arrives but no assistant message exists in the session (the apperror path should usually catch this first), an inline "No response received." message is shown. The apperror handler now also recognises the new no_response type with a distinct label.

Cleanup: Remove stale OpenAI models from default list (fixes #374)

• api/config.py: gpt-4o and o3 removed from _FALLBACK_MODELS and _PROVIDER_MODELS["openai"]. Both are superseded by newer models already in the list (gpt-5.4-mini for general use, o4-mini for reasoning). The Copilot provider list retains gpt-4o as it remains available via the Copilot API.

Feature: Live model fetching from provider API (closes #375)

• api/routes.py: New /api/models/live?provider=openai endpoint. Fetches the actual model list from the provider's /v1/models API using the user's configured credentials. Includes URL scheme validation (B310), SSRF guard (private IP block), and graceful not_supported response for providers without a standard /v1/models endpoint (Anthropic, Google). Response normalised to {id, label} list, filtered to chat models.
• static/ui.js: populateModelDropdown() now calls _fetchLiveModels() in the background after rendering the static list. Live models that aren't already in the dropdown are appended to the provider's optgroup. Results are cached per session so only one fetch per provider per page load. Skips Anthropic and Google (unsupported). Falls back to static list silently if the fetch fails.
  • 25 new tests in tests/test_issues_373_374_375.py; 949 tests total (up from 924)

[v0.50.19] Fix UnicodeEncodeError when downloading files with non-ASCII filenames (PR #378)

• Workspace file downloads no longer crash for Unicode filenames (api/routes.py): Clicking a PDF or other file with Chinese, Japanese, Arabic, or other non-ASCII characters in its name caused a UnicodeEncodeError because Python's HTTP server requires header values to be latin-1 encodable. A new _content_disposition_value(disposition, filename) helper centralises Content-Disposition generation: it strips CR/LF (injection guard), builds an ASCII fallback for the legacy filename= parameter (non-ASCII chars replaced with _), and preserves the full UTF-8 name in filename*=UTF-8''... per RFC 5987. Both attachment and inline responses use it.
  • 2 new integration tests in tests/test_sprint29.py covering Chinese filenames for both download and inline responses, verifying the header is latin-1 encodable and filename*=UTF-8'' is present; 924 tests total (up from 922)

[v0.50.18] Recover from invalid default workspace paths (PR #366)

• WebUI no longer breaks when the configured default workspace is unavailable (api/config.py): The workspace resolution path was refactored into three composable functions — _workspace_candidates(), _ensure_workspace_dir(), and resolve_default_workspace(). When the configured workspace (from env var, settings file, or passed path) cannot be created or accessed, the server falls back through an ordered priority list: HERMES_WEBUI_DEFAULT_WORKSPACE env var → ~/workspace (if exists) → ~/work (if exists) → ~/workspace (create it) → STATE_DIR/workspace.
• save_settings() now validates and corrects the workspace path (api/config.py): If a client posts an invalid or inaccessible default_workspace, the saved value is corrected to the nearest valid fallback rather than persisting an unusable path.
• Startup normalizes stale workspace paths (api/config.py): If the settings file stores a workspace that no longer exists, the server rewrites it with the resolved fallback on startup so the problem self-heals.
  • 7 tests in tests/test_default_workspace_fallback.py (2 from PR + 5 added during review: fallback creation, RuntimeError on all-fail, deduplication, env var priority, unwritable path returns False); 922 tests total (up from 915)

[v0.50.17] Docker: pre-install uv at build time + fix workspace permissions (fixes #357)

• Docker containers no longer need internet access at startup (Dockerfile): uv is now installed at image build time via RUN curl -LsSf https://astral.sh/uv/install.sh | env UV_INSTALL_DIR=/usr/local/bin sh (run as root, so uv lands in /usr/local/bin — accessible to all users). The init script skips the download if uv is already on PATH (command -v uv), and falls back to downloading with a proper error_exit if it isn't. This fixes startup failures in air-gapped, firewalled, or isolated Docker networks where github.com is unreachable at runtime.
  • Fix applied during review: the original PR installed uv as the hermeswebuitoo user (to ~hermeswebuitoo/.local/bin), which is not on the hermeswebui runtime user's PATH. Changed to install as root with UV_INSTALL_DIR=/usr/local/bin so uv is in the system PATH for all users.
• Workspace directory now writable by the hermeswebui user (docker_init.bash): The init script now uses sudo mkdir -p and sudo chown hermeswebui:hermeswebui for HERMES_WEBUI_DEFAULT_WORKSPACE. Docker auto-creates bind-mount directories as root if they don't exist on the host, making them unwritable by the app user. The sudo chown corrects ownership after creation.
  • 15 new structural tests in tests/test_issue357.py; 915 tests total (up from 900)

[v0.50.16] Fix CSRF check failing behind reverse proxy on non-standard ports (PR #360)

• CSRF no longer rejects POST requests from reverse-proxied deployments on non-standard ports (api/routes.py, fixes #355): When serving behind Nginx Proxy Manager or similar on a port like :8000, browsers send Origin: https://app.example.com:8000 while the proxy forwards Host: app.example.com (port stripped). The old string comparison failed this as cross-origin. Two changes fix it:
  • _normalize_host_port(): properly splits host:port strings including IPv6 bracket notation ([::1]:8080)
  • _ports_match(scheme, origin_port, allowed_port): scheme-aware port equivalence — absent port equals :80 for http:// and :443 for https://. This prevents the previous cross-protocol confusion where http://host could incorrectly match an https://host:443 server (security fix applied on top of the original PR)
  • HERMES_WEBUI_ALLOWED_ORIGINS env var: comma-separated explicit origin allowlist for cases where port normalization alone isn't sufficient (e.g. non-standard ports like :8000 where the proxy strips the port entirely). Entries without a scheme (https://) are rejected with a startup warning.
• Security fix applied during review: the original _ports_match treated both port 80 and port 443 as interchangeable with "absent port", which is scheme-unaware. An http://host origin would pass for an https://host:443 server. Fixed by making the default-port lookup scheme-specific.
  • 29 new tests in tests/test_sprint29.py (5 from PR + 24 added during review): cover scheme-aware port matching, cross-protocol rejection, unit tests for _normalize_host_port and _ports_match, allowlist validation, comma-separated origins, no-scheme allowlist warning, the bug scenario with and without the allowlist; 900 tests total (up from 871)

[v0.50.15] KaTeX math rendering for LaTeX in chat and workspace previews (fixes #347)

• LaTeX / KaTeX math now renders in chat messages and workspace file previews (static/ui.js, static/workspace.js, static/style.css, static/index.html): Inline math ($...$, \(...\)) and display math ($$...$$, \[...\]) are rendered via KaTeX instead of displaying as raw text. Follows the existing mermaid lazy-load pattern: delimiters are stashed before markdown processing, placeholder elements are emitted, and KaTeX JS is loaded from CDN on first use — no KaTeX JS is loaded unless math is present.
  • $$...$$ and \[...\] → centered display math (<div class="katex-block">)
  • $...$ and \(...\) → inline math (<span class="katex-inline">); requires non-space at $ boundaries to avoid false positives on currency amounts like $5
  • KaTeX JS lazy-loaded from jsdelivr CDN with SRI hash; KaTeX CSS loaded eagerly in <head> to prevent layout shift
  • throwOnError:false — invalid LaTeX degrades to a <code> span rather than crashing the message
  • trust:false — disables KaTeX commands that could execute code
  • <span> added to SAFE_TAGS allowlist for inline math spans (tag name boundary check preserved)
• Fix: fence stash now runs before math stash (static/ui.js): The original PR had math stash before fence stash, meaning \$x$`` inside backtick code spans was incorrectly extracted as math instead of being protected as code. Order corrected — fence_stash runs first so code spans protect their contents.
• Workspace file previews now render math (static/workspace.js): Added requestAnimationFrame(renderKatexBlocks) after markdown file preview renders, matching the chat message path. Without this, math placeholders appeared in previews but were never rendered.
  • 29 tests in tests/test_issue347.py (18 original + 11 new covering stash ordering, workspace wiring, false-positive prevention); 870 tests total (up from 841)

[v0.50.14] Security fixes: B310 urlopen scheme validation, B324 MD5 usedforsecurity, B110 bare except logging + QuietHTTPServer (PR #354)

• B324 — MD5 no longer triggers crypto warnings (api/gateway_watcher.py): _snapshot_hash uses MD5 only as a non-cryptographic change-detection hash. Added usedforsecurity=False so systems with strict crypto policies (FIPS mode etc.) don't reject the call.
• B310 — urlopen now validates URL scheme (api/config.py, bootstrap.py): Both get_available_models() and wait_for_health() validate that the URL scheme is http or https before calling urllib.request.urlopen, preventing file:// or other dangerous scheme injection. Added # nosec B310 suppression after each validated call.
• B110 — bare except: pass blocks replaced with logger.debug() (12 files): All except Exception: pass and except: pass blocks now log the failure at DEBUG level so operators can diagnose issues in production without changing behavior. A module-level logger = logging.getLogger(__name__) was added to each file.
• QuietHTTPServer (server.py): Subclass of ThreadingHTTPServer that overrides handle_error() to silently drop ConnectionResetError, BrokenPipeError, ConnectionAbortedError, and socket errno 32/54/104 (client disconnect races). Real errors still delegate to the default handler. Reduces log spam from SSE clients that disconnect mid-stream.
• Session title redaction (api/routes.py): The /api/sessions list endpoint now applies _redact_text to session titles before returning them, consistent with the per-session redact_session_data() already applied elsewhere.
• Fix: QuietHTTPServer.handle_error uses sys.exc_info() (standard library) not traceback.sys.exc_info() (implementation detail); sys is now explicitly imported in server.py.
  • 19 new tests in tests/test_sprint43.py; 841 tests total (up from 822)

[v0.50.13] Fix session_search in WebUI sessions — inject SessionDB into AIAgent (PR #356)

• session_search now works in WebUI sessions (api/streaming.py): The agent's session_search tool returned "Session database not available" for all WebUI sessions. The CLI and gateway code paths both initialize a SessionDB instance and pass it via session_db= to AIAgent.__init__(), but the WebUI streaming path was missing this step. _run_agent_streaming now initializes SessionDB() before constructing the agent and passes it in. A try/except wrapper makes the init non-fatal — if hermes_state is unavailable (older installs, test environments), a WARNING is printed and session_db=None is passed instead, preserving the prior behavior gracefully.
  • 7 new tests in tests/test_sprint42.py; 822 tests total (up from 815)

[v0.50.12] Profile .env isolation — prevent API key leakage on profile switch (fixes #351)

• API keys no longer leak between profiles on switch (api/profiles.py): _reload_dotenv() now tracks which env vars were loaded from the active profile's .env and clears them before loading the next profile. Previously, switching from a profile with OPENAI_API_KEY=X to a profile without that key left X in os.environ for the duration of the process — effectively leaking credentials across the profile boundary. A module-level _loaded_profile_env_keys: set[str] tracks loaded keys; it is cleared and repopulated on every _reload_dotenv() call.
• apply_onboarding_setup() ordering fixed (api/onboarding.py): the belt-and-braces os.environ[key] = api_key direct assignment is now placed after _reload_dotenv(). Previously the key was wiped by the isolation cleanup when _reload_dotenv() ran immediately after the direct set.
  • 2 new tests in tests/test_profile_env_isolation.py; 815 tests total (up from 813)

[v0.50.11] Chat table styles + plain URL auto-linking (fixes #341, #342)

• Tables in chat messages now render with visible borders (static/style.css): The .msg-body area had no table CSS, so markdown tables sent by the assistant were unstyled and unreadable. Four new rules mirror the existing .preview-md table styles: border-collapse:collapse, per-cell padding and borders via var(--border2), and an alternating-row tint. Two :root[data-theme="light"] overrides ensure the borders and header background adapt correctly in light mode. (fixes #341)
• Plain URLs in chat messages are now clickable (static/ui.js): Bare URLs like https://example.com were rendered as plain text. A new autolink pass in renderMd() converts https?://... URLs to <a> tags automatically. Runs after the SAFE_TAGS escape pass (protecting code blocks), before paragraph wrapping. Also applied inside inlineMd() so URLs in list items, blockquotes, and table cells are linked too. Trailing punctuation stripped; esc() applied to both href and link text. (fixes #342)
  • 11 new tests (4 in tests/test_issue341.py, 7 in tests/test_issue342.py); 813 tests total (up from 802)
• Test infrastructure fix (tests/test_sprint34.py #349): two static-file opens used bare relative paths that failed when pytest ran from outside the repo root; replaced with pathlib.Path(__file__).parent.parent consistent with the rest of the suite. 813/813 now pass from any working directory.

[v0.50.10] Title auto-generation fix + mobile close button (PR #333)

• Session title now auto-generates for all default title values ('Untitled', 'New Chat', empty string): The condition in api/streaming.py that triggers title_from() previously only matched 'Untitled'. It now also covers 'New Chat' (used by some external clients/forks) and any empty/falsy title, so sessions started from those states get a proper auto-generated title after the first message.
• Redundant workspace panel close button hidden on mobile (static/style.css): On viewports ≤900px wide, both the desktop collapse button (#btnCollapseWorkspacePanel) and the mobile-specific X button (.mobile-close-btn) were rendered simultaneously. The desktop button is now hidden on mobile and .mobile-close-btn is hidden by default (desktop) and shown only on mobile — eliminating the duplicate control.
  • 11 new tests in tests/test_sprint41.py; 802 tests total (up from 791)

[v0.50.9] Onboarding works from Docker bridge networks (PR #335, fixes #334)

• Docker users can now complete onboarding without enabling auth first (closes #334): The onboarding setup endpoint previously only accepted requests from 127.0.0.1. Docker containers connect via bridge network IPs (172.17.x.x, etc.), so the endpoint returned a 403 mid-wizard with no clear explanation. The check now accepts any loopback or RFC-1918 private address (127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) using Python's ipaddress.is_loopback and is_private. Public IPs are still blocked unless auth is enabled.

[v0.50.8] Model dropdown deduplication — hyphen vs dot separator fix (PR #332)

• Model dropdown no longer shows duplicates for hyphen-format configs (e.g. claude-sonnet-4-6 from hermes-agent config): The server-side normalization in api/config.py now unifies hyphens and dots when checking whether the default model is already in the dropdown. Previously, claude-sonnet-4-6 (hermes-agent format) and claude-sonnet-4.6 (WebUI list format) were treated as different models, causing the same model to appear twice — once as a raw unlabelled entry and once with the correct display name. The raw entry is now suppressed and the labelled one is selected as default.
• README updated: test count corrected to 791 / 51 files; all module line counts updated to current values; onboarding.py, state_sync.py, updates.py added to the architecture listing.

[v0.50.7] OAuth provider onboarding path — Codex/Copilot no longer blocks setup (PR #331, fixes #329 bug 2)

• OAuth providers now have a proper onboarding path (closes bug 2): Users with openai-codex, copilot, qwen-oauth, or any other OAuth-authenticated provider now see a clear confirmation card instead of an unusable API key input form.
  • If already authenticated (chat_ready: true): blue "Provider already authenticated" card with a direct Continue button — no key entry required.
  • If not yet authenticated: amber card explaining how to run hermes auth or hermes model in a terminal to complete setup.
  • Either state includes a collapsible "switch provider" section for users who want to move to an API-key provider instead.
  • _build_setup_catalog now includes current_is_oauth boolean; fixed a latent KeyError crash when looking up default_model for OAuth providers.
  • 5 new i18n keys in English and Spanish (onboarding_oauth_*).
  • 15 new tests in tests/test_sprint40.py; 791 tests total (up from 776)

[v0.50.6] Skip-onboarding env var + synchronous API key reload (PR #330, fixes #329 bugs 1+3)

• HERMES_WEBUI_SKIP_ONBOARDING=1 (closes bug 1): Hosting providers can set this env var to bypass the first-run wizard entirely. Only takes effect when chat_ready is also true — a misconfigured deployment still shows the wizard. Accepts 1, true, or yes.
• API key takes effect immediately after onboarding (closes bug 3): apply_onboarding_setup now sets os.environ[env_var] synchronously after writing the key to .env, so the running process can use it without a server restart. Also attempts to reload hermes_cli's config cache as a belt-and-suspenders measure.
  • 8 new tests in tests/test_sprint39.py; 776 tests total (up from 768)

[v0.50.5] Think-tag stripping with leading whitespace (PR #327)

• Fix think-tag rendering for models that emit leading whitespace (e.g. MiniMax M2.7): Some models emit one or more newlines before the <think> opening tag. The previous regex used a ^ anchor, so it only matched when <think> was the very first character. When the anchor failed, the raw </think> tag appeared in the rendered message body.
  • static/ui.js (stored messages): removed ^ anchor from <think> and Gemma channel-token regexes; switched from .slice() to .replace() + .trimStart() so stripping works regardless of position
  • static/messages.js (live stream): trimStart() before startsWith/indexOf checks; partial-tag-prefix guard also uses trimmed buffer
  • 10 new tests in tests/test_sprint38.py; 768 tests total (up from 758)

[v0.50.3] Onboarding completes gracefully for pre-configured providers (PR #323, fixes #322)

• OAuth/CLI-configured providers no longer blocked by onboarding (closes #322): Users with providers already set up via the CLI (openai-codex, copilot, nous, etc.) hit Unsupported provider for WebUI onboarding when clicking "Open Hermes" on the finish page. The wizard now marks onboarding complete and lets them through — the agent setup is already done, no wizard steps needed.
  • 5 new tests in tests/test_sprint34.py; 758 tests total (up from 753)

[v0.50.2] Workspace panel state persists across refreshes

• Workspace panel open/closed persists (localStorage key hermes-webui-workspace-panel): Once you open the workspace/files pane, it stays open after a page refresh. Closing it explicitly saves the closed state, which also survives a refresh. The restore happens in the boot sequence before the first render, so there is no flash of the wrong state. Works for both desktop and mobile.
  • State is stored as 'open' or 'closed' — 'open' restores as 'browse' mode; any preview state is re-evaluated normally.
  • 7 new tests in tests/test_sprint37.py; 753 tests total (up from 746)

[v0.50.1] Mobile Enter key inserts newline (PR #315, fixes #269)

• Enter inserts newline on mobile (closes #269): On touch-primary devices (detected via matchMedia('(pointer:coarse)')), the Enter key now inserts a newline instead of sending. Users send via the Send button, which is always visible on mobile. Desktop behavior is unchanged — Enter sends, Shift+Enter inserts a newline.
  • The ctrl+enter setting continues to work as before on all devices.
  • Users who explicitly set send key to enter on mobile can override in Settings.
  • 4 new tests in tests/test_mobile_layout.py; 746 tests total (up from 742)

[v0.50.0] Composer-centric UI refresh + Hermes Control Center (PR #242)

Major UI overhaul by @aronprins — the biggest single contribution to the project. Rebased and reviewed on pr-242-review.

• Composer as control hub — model selector, profile chip, and workspace chip now live in the composer footer as pill buttons with dropdowns. The context window usage ring (token count, cost, fill) replaces the old linear pill.
• Hermes Control Center — a single sidebar launcher button (bottom of sidebar) replaces the gear icon settings modal. Tabbed 860px modal: Conversation tab (transcript/JSON export, import, clear), Preferences tab (all settings), System tab (version, password). Always resets to Conversation on close.
• Activity bar removed — turn-scoped status (thinking, cancelling) renders inline in the composer footer via setComposerStatus.
• Session ⋯ dropdown — per-row pin/archive/duplicate/move/delete actions move from inline buttons into a shared dropdown menu; click-outside/scroll/Escape handling.
• Workspace panel state machine — _workspacePanelMode (closed/browse/preview) in boot.js with proper transitions and discard-unsaved guard.
• Icon additions — save, chevron-right, arrow-right, pause, paperclip, copy, rotate-ccw, user added to icons.js.
• i18n additions — 6 new keys across en/de/zh/zh-Hant for control center sections.
• OLED theme — 7th built-in theme (true black background for OLED displays), originally contributed by @kevin-ho in PR #168.
• Mobile fixes — icon-only composer chips below 640px, overflow-y: hidden on .composer-left to prevent scrollbar, profile dropdown max-width: min(260px, calc(100vw - 32px)).
• 742 tests total; all existing tests pass; version badge in System tab updated to v0.50.0.

[v0.49.4] Cancel stream cleanup guaranteed (PR #309, fixes #299)

• Reliable cancel cleanup (closes #299): cancelStream() no longer depends on the SSE cancel event to clear busy state and status text. Previously, if the SSE connection was already closed when cancel fired, "Cancelling..." would linger indefinitely. Now cancelStream() clears S.activeStreamId, calls setBusy(false), setStatus(''), and hides the cancel button directly after the cancel API request — regardless of SSE connection state. The SSE cancel handler still runs when the connection is alive (all operations are idempotent).
  • 9 new tests in tests/test_sprint36.py; 742 tests total (up from 733)

[v0.49.3] Session title guard + breadcrumb nav + wider panel (PRs #301, #302)

• Preserve user-renamed session titles (PR #301 by @franksong2702 / closes #300): title_from() now only runs when the session title is still 'Untitled'. Previously it overwrote user-assigned titles on every conversation turn.
  • Fixed in both api/streaming.py (streaming path) and api/routes.py (sync path).
• Clickable breadcrumb navigation (PR #302 by @franksong2702 / closes #292): Workspace file preview now shows a clickable breadcrumb path bar. Each segment navigates directly to that directory level. Paths with spaces and special characters handled correctly. clearPreview() restores the directory breadcrumb on close.
• Wider right panel (PR #302): PANEL_MAX raised from 500 to 1200 — right panel can now be dragged wider on ultrawide screens.
• Responsive message width (PR #302): .messages-inner now scales up gracefully at 1400px (1100px max) and 1800px (1200px max) viewport widths instead of capping at 800px on all screen sizes.
  • 12 new tests in tests/test_sprint35.py; 733 tests total (up from 721)

[v0.49.2] OAuth provider support in onboarding (issues #303, #304)

• OAuth provider bypass (closes #303, #304): The first-run onboarding wizard now correctly recognizes OAuth-authenticated providers (GitHub Copilot, OpenAI Codex, Nous Portal, Qwen OAuth) as ready, instead of always demanding an API key.
  • New _provider_oauth_authenticated() helper in api/onboarding.py checks hermes_cli.auth.get_auth_status() first (authoritative), then falls back to parsing ~/.hermes/auth.json directly for the known OAuth provider IDs (openai-codex, copilot, copilot-acp, qwen-oauth, nous).
  • _status_from_runtime() now has an else branch for providers not in _SUPPORTED_PROVIDER_SETUPS; OAuth-authenticated providers return provider_ready=True and setup_state="ready".
  • The provider_incomplete status note no longer says "API key" for OAuth providers — it now says "Run 'hermes auth' or 'hermes model' in a terminal to complete setup."
  • 21 new tests in tests/test_sprint34.py; 721 tests total (up from 700)

[v0.49.1] Docker docs + mobile Profiles button (PRs #291, #265)

• Two-container Docker setup (PR #291 / closes #288): New docker-compose.two-container.yml for running the Hermes Agent and WebUI as separate containers with shared volumes. Documents the architecture clearly; localhost-only port binding by default.
• Mobile Profiles button (PR #265 by @Bobby9228): Adds Profiles to the mobile bottom navigation bar (last position: Chat → Tasks → Skills → Memory → Spaces → Profiles). Uses mobileSwitchPanel() for correct active-highlight behaviour; data-panel="profiles" attribute set; SVG matches other nav icons; 3 new tests.
  • 700 tests total (up from 697)

[v0.49.0] First-run onboarding wizard + self-update hardening (PRs #285, #287, #289)

• One-shot bootstrap and first-run setup wizard (PR #285 — first-run onboarding flow): New users are greeted with a guided onboarding overlay on first load. The wizard checks system status, configures a provider (OpenRouter, Anthropic, OpenAI, or custom OpenAI-compatible endpoint), sets a workspace and optional password, and marks setup as complete — all without leaving the browser.

  • bootstrap.py: one-shot CLI bootstrap that writes ~/.hermes/config.yaml and ~/.hermes/.env from flags; idempotent and safe to re-run
  • api/routes.py: /api/onboarding/status (GET) and /api/onboarding/complete (POST) endpoints; real provider config persistence to config.yaml + .env
  • static/onboarding.js: full wizard JS module — step navigation, provider dropdown, model selector, API key input, Back/Continue flow, i18n support
  • static/index.html: onboarding overlay HTML shell + <script src="/static/onboarding.js"> load
  • static/i18n.js: 40+ onboarding keys added to all 5 locales (en, es, de, zh-Hans, zh-Hant)
  • static/boot.js: on load, fetches /api/onboarding/status and opens wizard when completed=false
  • Wizard does NOT show when onboarding_completed=true in settings
  • 14 new tests in tests/test_onboarding.py; 693 tests total (up from 679)

• Self-update git pull diagnostics (PR #287): Fixes multiple failure modes in the WebUI self-update flow when the repo has a non-trivial git state.

  • _run_git() now returns stderr on failure (stdout fallback, then exit-code message) — users see actionable git errors instead of empty strings
  • New _split_remote_ref() helper splits origin/master into ('origin', 'master') before git pull --ff-only — fixes silent failures where git misinterpreted the combined string as a repository name
  • --untracked-files=no added to git status --porcelain — prevents spurious stash failures in repos with untracked files
  • Early merge-conflict detection via porcelain status codes before attempting pull
  • 4 new unit tests in tests/test_updates.py

• Skip flaky redaction test in agent-less environments (PR #289): test_api_sessions_list_redacts_titles added to the CI skip list for environments without hermes-agent installed. Test still runs with the full agent; security coverage preserved by 6 pure-unit tests and 2 other API-level redaction tests.

  • 697 tests total (up from 693)

[v0.48.2] Provider/model mismatch warning (PR #283, fixes #266)

• Provider mismatch warning (PR #283): WebUI now warns when you select a model from a provider different from the one Hermes is configured for, instead of silently failing with a 401 error.
  • api/streaming.py: 401/auth errors classified as type='auth_mismatch' with an actionable hint ("Run hermes model in your terminal to switch providers")
  • static/ui.js: populateModelDropdown() stores active_provider from /api/models as window._activeProvider; new _checkProviderMismatch() helper compares selected model's provider prefix against the configured provider
  • static/boot.js: modelSelect.onchange calls _checkProviderMismatch() and shows a toast warning immediately on selection
  • static/messages.js: apperror handler shows "Provider mismatch" label (via i18n) instead of "Error" for auth errors
  • static/i18n.js: provider_mismatch_warning and provider_mismatch_label keys added to all 5 locales (en, es, de, zh-Hans, zh-Hant)
  • Check skipped for openrouter and custom providers to avoid false positives
  • 21 new tests in tests/test_provider_mismatch.py; 679 tests total (up from 658)

[v0.48.1] Markdown table inline formatting (PR #278)

• Inline formatting in table cells (PR #278, @nesquena): Table header and data cells now render **bold**, *italic*, `code`, and [links](url) correctly. Previously esc() was used, which displayed raw HTML tags as text. Changed to inlineMd() consistent with list items and blockquotes. XSS-safe: inlineMd() escapes all interpolated values. Two-line change in static/ui.js. Fixes #273.

[v0.48.0] Real-time gateway session sync (PR #274)

• Real-time gateway session sync (PR #274, @bergeouss): Gateway sessions from Telegram, Discord, Slack, and other messaging platforms now appear in the WebUI sidebar and update in real time as new messages arrive. Enable via the "Show agent sessions" checkbox (renamed from "Show CLI sessions").
  • api/gateway_watcher.py: background daemon thread polling state.db every 5s using MD5 hash-based change detection
  • New SSE endpoint /api/sessions/gateway/stream for real-time push to browser
  • Dynamic source badges: telegram (blue), discord (purple), slack (dark purple), cli (green)
  • Zero changes to hermes-agent — WebUI reads the shared state.db that both components access
  • 10 new tests in test_gateway_sync.py covering metadata, filtering, SSE, and watcher lifecycle
  • 658 tests (up from 648)

[v0.47.1] Spanish locale (PR #275)

• Spanish (es) locale (PR #275, @gabogabucho): Full Spanish translation for all 175 UI strings. Exposed automatically in the language selector via existing LOCALES wiring. Includes regression tests verifying locale presence, representative translations, and key-parity with English. 648 tests (up from 645).

[v0.47.0] — 2026-04-11

Features

• /skills [query] slash command (PR #257): Fetches from /api/skills, groups results by category (alphabetically), renders as a formatted assistant message. Optional query filters by name, description, or category. Shows in the / autocomplete dropdown. i18n for en/de/zh/zh-Hant. 1 regression test added.
• Shared app dialogs replace native confirm()/prompt() (PR #251, extracted from #242 by @aronprins): showConfirmDialog() and showPromptDialog() in ui.js, backed by #appDialogOverlay. Replaces all 11 native browser dialog call sites across panels.js, sessions.js, ui.js, workspace.js. Full keyboard focus trap (Tab/Escape/Enter), ARIA roles, danger mode, focus restore, mobile-responsive buttons. i18n for en/de/zh/zh-Hant. 5 new tests in test_sprint33.py.
• Session ⋯ action dropdown (PR #252, extracted from #242 by @aronprins): Replaces 5 per-row hover buttons (pin/move/archive/duplicate/delete) with a single ⋯ trigger. Menu uses position:fixed to avoid sidebar clipping. Full close handling: click-outside, scroll, Escape, resize-reposition. test_sprint16.py updated to assert the new trigger exists and old button classes are gone.

Bug Fixes

• Custom provider with slash model name no longer rerouted to OpenRouter (PR #255): resolve_model_provider() now returns immediately with the configured provider/base_url when base_url is set, before the slash-based OpenRouter heuristic runs. Fixes google/gemma-4-26b-a4b with provider: custom being silently routed to OpenRouter (401 errors). 1 regression test added. Fixes #230.
• Android Chrome: workspace panel now closeable on mobile (PR #256): toggleMobileFiles() now shows/hides the mobile overlay. New closeMobileFiles() helper closes the right panel with correct overlay tracking. Overlay tap-to-close calls both closeMobileSidebar() and closeMobileFiles(). Mobile-only × close button added to workspace panel header. Fix applied during review: closeMobileSidebar() now checks if the right panel is still open before hiding the overlay. Fixes #247.
• Android Chrome: profile dropdown no longer clipped on mobile (PR #256): .profile-dropdown switches to position:fixed; top:56px; right:8px at max-width:900px, escaping the overflow-x:auto stacking context that was making it invisible. Fixes #246.

Tests

• Mobile layout regression suite (PR #254): 14 static tests in tests/test_mobile_layout.py that run on every QA pass. Covers: CSS breakpoints at 900px/640px, right panel slide-over, mobile overlay, bottom nav, files button, profile dropdown z-index, chip overflow, workspace close, 100dvh, 44px touch targets, 16px textarea font. All pass against current and future master.

CSS hotfix (commit a2ae953, post-tag): session action menu — icon now displays inline-left of text. The .ws-opt base class (flex-direction:column) was causing SVG icons to stack above the label. Fixed with 3 CSS rule overrides on .session-action-opt.

645 tests (up from 624 on v0.46.0 — +21 new tests)

---

[v0.46.0] — 2026-04-11

Features

• Docker UID/GID matching (PR #237 by @mmartial): New docker_init.bash entrypoint adds hermeswebui/hermeswebuitoo user pattern so container-created files match the host user UID/GID. Prevents .hermes volume mounts from being owned by root. Configure via WANTED_UID and WANTED_GID env vars (default 1000/1000). README updated with setup instructions.
  • Dockerfile — two-user pattern with passwordless sudo; /.within_container marker for in-container detection; starts as hermeswebuitoo, switches to correct UID/GID
  • docker-compose.yml — mounts .hermes at /home/hermeswebui/.hermes; uses ${UID:-1000}/${GID:-1000} for UID/GID passthrough
  • server.py — detects /.within_container and prints a note when binding to 0.0.0.0

Security

• Credential redaction in API responses (PR #243 by @kcclaw001): All API endpoints now redact credentials from responses at the response layer. Session files on disk are unchanged; only the API output is masked.
  • api/helpers.py — redact_session_data() and _redact_value() apply pattern-based redaction to messages, tool_calls, and title; covers GitHub PATs, OpenAI/Anthropic keys, AWS keys, Slack tokens, HuggingFace tokens, Authorization Bearer headers, and PEM private key blocks
  • api/routes.py — GET /api/session, GET /api/session/export, GET /api/memory all wrapped with redaction
  • api/streaming.py — SSE done event payload redacted before broadcast
  • api/startup.py — new fix_credential_permissions() called at startup; chmod 600 on .env, google_token.json, auth.json, .signing_key if they have group/other read bits set
  • tests/test_security_redaction.py — 13 new tests covering redaction functions and endpoint structural verification

Bug Fixes

• Custom model list discovery with config API key (PR #238 by @ccqqlo): get_available_models() now reads api_key from config.yaml before env vars when fetching /v1/models from custom endpoints (LM Studio, Ollama, etc.). Priority: model.api_key → providers.<active>.api_key → providers.custom.api_key → env vars. Also adds OpenAI/Python 1.0 User-Agent header. Fixes model picker collapsing to single default model for config-only setups. 1 new regression test.
• HTML entity decode before markdown processing (PR #239 by @Argonaut790): Adds decode() helper in renderMd() to fix double-escaping of HTML entities from LLM output (e.g. <code> becoming <code> instead of rendering). XSS-safe: decode runs before esc(), only 5 entity patterns (<, >, &, ", ').
• Simplified Chinese translations completed (PR #239 by @Argonaut790): 40+ missing keys added to zh locale (123 → 164 keys). New zh-Hant (Traditional Chinese) locale with 163 keys.
• Cancel button now interrupts agent execution (PR #244 by @huangzt): cancel_stream() now calls agent.interrupt() to stop backend tool execution, not just the SSE stream. AGENT_INSTANCES dict (protected by STREAMS_LOCK) tracks active agents. Race condition fixed: after storing agent, immediately checks if cancel was already requested. Frontend: removes stale "Cancelling..." status text; setBusy(false) always called on cancel. 6 new unit tests in tests/test_cancel_interrupt.py.

624 tests (up from 604 on v0.45.0 — +20 new tests)

---

[v0.45.0] — 2026-04-10

Features

• Custom endpoint fields in new profile form (PR #233, fixes #170): The New Profile form now accepts optional Base URL and API key fields. When provided, both are written into the new profile's config.yaml under the model section, enabling local-endpoint setups (Ollama, LMStudio, etc.) to be configured in one step without editing YAML manually. The write is a no-op when both fields are left blank, so existing profile creation behavior is unchanged.
  • api/profiles.py — _write_endpoint_to_config() merges base_url/api_key into config.yaml using yaml.safe_load + yaml.dump, preserving any existing keys
  • api/routes.py — accepts base_url and api_key from POST body; validates that base_url, if provided, starts with http:// or https:// (returns 400 for invalid schemes)
  • static/index.html — two new inputs added to the New Profile form: Base URL (with http://localhost:11434 placeholder) and API key (password type)
  • static/panels.js — submitProfileCreate() reads both fields, validates URL format client-side before sending, and includes them in the create payload; toggleProfileForm() clears them on cancel
  • 9 tests in tests/test_sprint31.py covering: config write (base_url, api_key, both, merge, no-op), route acceptance, profile path in response, and invalid-scheme rejection

604 tests (up from 595)

[v0.44.1] — 2026-04-10

• Unskip 16 approval tests (PR #231): test_approval_unblock.py was importing has_pending and pop_pending from tools.approval, which the agent module had removed. The import failure tripped the APPROVAL_AVAILABLE guard and skipped all 16 tests in the file. Neither symbol was used in any test body. Removing the stale imports restores 595/595 passing, 0 skipped.

[v0.44.0] — 2026-04-10

Features

• Lucide SVG icons (PR #221): Replaces all emoji icons in the sidebar, workspace, and tool cards with self-hosted Lucide SVG paths via static/icons.js. No CDN dependency — icons are bundled directly. The li(name) renderer uses a hardcoded whitelist, so server-supplied tool names never inject arbitrary SVG. All 35 onclick= functions verified to exist in JS; all 21 icon references verified in icons.js.

Bug Fixes

• Approval card hides immediately on respond/stream-end (PR #225): respondApproval() and all stream-end SSE handlers (done, cancel, apperror, error, start-error) now call hideApprovalCard(true). Previously the 30s minimum-visibility guard deferred the hide, leaving the card visible with disabled buttons for up to 30s after the user clicked Approve/Deny or the session completed. The poll-loop tick correctly keeps no-force so the guard still protects against transient polling gaps. Adds 11 structural tests for the timer logic.
• Login page CSP fix (PR #226): Moves doLogin() and Enter key listener from inline <script>/onsubmit/onkeydown attributes into static/login.js. Inline handlers are blocked by strict script-src CSP, causing silent login failure. i18n error strings now passed via data-* attributes instead of injected JS literals. Also guards res.json() parse with try/catch so non-JSON server errors fall back to the password-error message. Fixes #222.
• Update error messages (PR #227): _apply_update_inner() now fetches before pulling and surfaces three distinct failure modes with actionable recovery commands: network unreachable, diverged history (git reset --hard), and missing upstream tracking branch (git branch --set-upstream-to). Generic fallback truncates to 300 chars with a sentinel for empty output. Adds 13 tests covering all new diagnostic code paths. Fixes #223.
• Approval pending check (PR #228): GET /api/approval/pending always returned {pending: null} after the agent module renamed has_pending to has_blocking_approval. The route now checks _pending directly under _lock, matching how submit_pending writes to it. Fixes test_approval_submit_and_respond.

Tests

• 579 passing, 16 skipped at this tag (595/595 after v0.44.1 unskip — +24 new tests across PRs #225, #227, #228)

[v0.43.1] — 2026-04-10

• CSRF fix for reverse proxies (PR #219): The CSRF check now accepts X-Forwarded-Host and X-Real-Host headers in addition to Host, so deployments behind Caddy, nginx, and Traefik no longer reject POST requests with "Cross-origin request rejected". Security is preserved — requests with no matching proxy header are still rejected. Fixes #218.

[v0.43.0] — 2026-04-10

Features

• Auto-install agent dependencies on startup (PRs #215 + #216): When hermes-agent is found on disk but its Python dependencies are missing (common in Docker deployments where the agent is volume-mounted post-build), server.py now calls api/startup.auto_install_agent_deps() to install from requirements.txt or pyproject.toml. Falls back gracefully — failures are logged and never fatal.

Bug Fixes

• Session ID validator broadened (PR #212): Session.load() rejected any session ID containing non-hex characters, breaking sessions created by the new hermes-agent format (YYYYMMDD_HHMMSS_xxxxxx). Validator now accepts [0-9a-z_] while rejecting path traversal patterns (null bytes, slashes, backslashes, dot-extensions).
• Test suite isolation (PR #216): conftest.py now kills any stale process on the test port (8788) before starting the fixture server. Stale QA harness servers (8792/8793) could occupy 8788 and cause non-deterministic test failures across the full suite.

[v0.42.2] — 2026-04-10

Bug Fixes

• CSP blocking inline event handlers (PR #209): script-src 'self' blocked all 55+ inline onclick= handlers in index.html, making the settings panel, sidebar navigation, and most interactive controls non-functional. Added 'unsafe-inline' to script-src. Also restores https://cdn.jsdelivr.net to script-src and style-src for Mermaid.js and Prism.js (dropped in v0.42.1).

[v0.42.1] — 2026-04-11

Bug Fixes

• i18n button text stripping (post-review): Three sidebar buttons (+ New job, + New skill, + New profile) and three suggestion buttons had data-i18n on the outer element, which caused applyLocaleToDOM to replace the entire textContent — stripping the + prefix and emoji characters on locale switch. Fixed by wrapping only the translatable label text in a <span data-i18n="...">.
• German translation corrections (post-review): Fixed cancelling (imperative → progressive "Wird abgebrochen…"), editing (first-person verb → noun "Bearbeitung"), and completed truncated descriptions for empty_subtitle, settings_desc_check_updates, and settings_desc_cli_sessions.

[v0.42.0] — 2026-04-10

Features

• German translation (PR #190 by @DavidSchuchert): Complete de locale covering all UI strings — settings, commands, sidebar, approval cards. Also extends the i18n system with data-i18n-title and data-i18n-placeholder attribute support so tooltip text and input placeholders are now translatable. German speech recognition uses de-DE.

Bug Fixes

• Custom slash-model routing (PR #189 by @smurmann): Model IDs like google/gemma-4-26b-a4b from custom providers (LM Studio, Ollama) were silently misrouted to OpenRouter because of the slash-heuristic. Custom providers now win: entries in config.yaml → custom_providers are checked first, so their model IDs route to the correct local endpoint regardless of format.
• Phantom Custom group in model picker (PR #191 by @mbac): When model.provider was a named provider (e.g. openai-codex) and model.base_url was set, hermes_cli reported 'custom' as authenticated, producing a duplicate "Custom" group in the dropdown. The real provider's group was missing the configured default model. Fixed by discarding the phantom custom entry when a real named provider is active.
• Hyphen/space model group injection (PR #191): The "ensure default_model appears" post-pass used active_provider.lower() in group_name.lower(), which fails for openai-codex vs display name OpenAI Codex (hyphen vs space). Now uses _PROVIDER_DISPLAY for exact display-name matching.

[v0.41.0] — 2026-04-10

Features

• Optional HTTPS/TLS support (PR #199): Set HERMES_WEBUI_TLS_CERT and HERMES_WEBUI_TLS_KEY env vars to enable HTTPS natively. Uses ssl.PROTOCOL_TLS_SERVER with TLS 1.2 minimum. Gracefully falls back to HTTP if cert loading fails. No reverse proxy required for LAN/VPN deployments.

Bug Fixes

• CSP blocking Mermaid and Prism (PR #197): Added Content-Security-Policy and Permissions-Policy headers to every response. CSP allows cdn.jsdelivr.net in script-src and style-src for Mermaid.js (dynamically loaded) and Prism.js (statically loaded with SRI integrity hashes). All other external origins blocked.
• Session memory leak (PR #196): api/auth.py accumulated expired session tokens indefinitely. Added _prune_expired_sessions() called lazily on every verify_session() call. No background thread, no lock contention.
• Slow-client thread exhaustion (PR #198): Added Handler.timeout = 30 to kill idle/stalled connections before they exhaust the thread pool.
• False update alerts on feature branches (PR #201): Update checker compared HEAD..origin/master even when on a feature branch, counting unrelated master commits as missing updates. Now uses git rev-parse --abbrev-ref @{upstream} to track the current branch's upstream. Falls back to default branch when no upstream is set.
• CLI session file browser returning 404 (PR #204): /api/list only checked the WebUI in-memory session dict, so CLI sessions shown in the sidebar always returned 404 for file browsing. Now falls back to get_cli_sessions() — the same pattern used by /api/session GET and /api/sessions list.

[v0.40.2] — 2026-04-09

Features

• Full approval UI (PR #187): When the agent triggers a dangerous command (e.g. rm -rf, pkill -9), a polished approval card now appears immediately instead of leaving the chat stuck in "Thinking…" forever. Four one-click buttons: Allow once, Allow session, Always allow, Deny. Enter key defaults to Allow once. Buttons disable immediately on click to prevent double-submit. Card auto-focuses Allow once so keyboard-only users can approve in one keystroke. All labels and the heading are fully i18n-translated (English + Chinese).

Bug Fixes

• Approval SSE event never sent (PR #187): register_gateway_notify() was never called before the agent ran, so the approval module had no way to push the approval SSE event to the frontend. Fixed by registering a callback that calls put('approval', ...) the instant a dangerous command is detected.
• Agent thread never unblocked (PR #187): /api/approval/respond did not call resolve_gateway_approval(), so the agent thread waited for the full 5-minute gateway timeout. Now calls it on every respond, waking the thread immediately.
• _unreg_notify scoping (PR #187): Variable was only assigned inside a try block but referenced in finally. Initialised to None before the try so the finally guard is always well-defined.

Tests

• 32 new tests in tests/test_sprint30.py: approval card HTML structure, all 4 button IDs and data-i18n labels, keyboard shortcut in boot.js, i18n keys in both locales, CSS loading/disabled/kbd states, messages.js button-disable behaviour, streaming.py scoping, HTTP regression for all 4 choices.
• 16 tests in tests/test_approval_unblock.py (gateway approval unit + HTTP).
• 547 tests total (499 → 515 → 547).

---

[v0.40.1] — 2026-04-09

Bug Fixes

• Default locale on first install (PR #185): A fresh install would start in English based on the server default, but loadLocale() could resurrect a stale or unsupported locale code from localStorage. Now loadLocale() falls back to English when there is no saved code or the saved code is not in the LOCALES bundle. setLocale() also stores the resolved code, so an unknown input never persists to storage.

---

[v0.40.0] — 2026-04-09

Features

• i18n — pluggable language switcher (PR #179): Settings panel now has a Language dropdown. Ships with English and Chinese (中文). All UI strings use a t() helper that falls back to English for missing keys. The login page also localises — title, placeholder, button, and error strings all respond to the saved locale. Add a language by adding a LOCALES entry to static/i18n.js.
• Notification sound + browser notifications (PR #180): Two new settings toggles. "Notification sound" plays a short two-tone chime when the assistant finishes or an approval card appears. "Browser notification" fires a system notification when the tab is in the background.
• Thinking / reasoning block display (PR #181, #182): Inline <think>…</think> and Gemma 4 <|channel>thought…<channel|> tags are parsed out of assistant messages and rendered as a collapsible lightbulb "Thinking" card above the reply. During streaming, the bubble shows "Thinking…" until the tag closes. Hardened against partial-tag edge cases and empty thinking blocks.

Bug Fixes

• Stray } in message row HTML (PR #183): A typo in the i18n refactor left an extra } in the msg-role div template literal, producing <div class="msg-role user" }>. Removed.
• JS-escape login locale strings (PR #183): LOGIN_INVALID_PW and LOGIN_CONN_FAILED were injected into a JS string context without escaping single quotes or backslashes. Now uses minimal JS-string escaping.

---

[v0.39.1] — 2026-04-08

Bug Fixes

• _ENV_LOCK deadlock resolved. The environment variable lock was held for the entire duration of agent execution (including all tool calls and streaming), blocking all concurrent requests. Now the lock is acquired only for the brief env variable read/write operations, released before the agent runs, and re-acquired in the finally block for restoration.

---

[v0.39.0] — 2026-04-08

Security (12 fixes — PR #171 by @betamod, reviewed by @nesquena-hermes)

• CSRF protection: all POST endpoints now validate Origin/Referer against Host. Non-browser clients (curl, agent) without these headers are unaffected.
• PBKDF2 password hashing: save_settings() was using single-iteration SHA-256. Now calls auth._hash_password() — PBKDF2-HMAC-SHA256 with 600,000 iterations and a per-installation random salt.
• Login rate limiting: 5 failed attempts per 60 seconds per IP returns HTTP 429.
• Session ID validation: Session.load() rejects any non-hex character before touching the filesystem, preventing path traversal via crafted session IDs.
• SSRF DNS resolution: get_available_models() resolves DNS before checking private IPs. Prevents DNS rebinding attacks. Known-local providers (Ollama, LM Studio, localhost) are whitelisted.
• Non-loopback startup warning: server prints a clear warning when binding to 0.0.0.0 without a password set — a common Docker footgun.
• ENV_LOCK consistency: _ENV_LOCK now wraps all os.environ mutations in both the sync chat and streaming restore blocks, preventing races across concurrent requests.
• Stored XSS prevention: files with text/html, application/xhtml+xml, or image/svg+xml MIME types are forced to Content-Disposition: attachment, preventing execution in-browser.
• HMAC signature: extended from 64 bits to 128 bits (16-char to 32-char hex).
• Skills path validation: resolve().relative_to(SKILLS_DIR) check added after skill directory construction to prevent traversal.
• Secure cookie flag: auto-set when TLS or X-Forwarded-Proto: https is detected. Uses getattr safely so plain sockets don't raise AttributeError.
• Error path sanitization: _sanitize_error() strips absolute filesystem paths from exception messages before they reach the client.

Tests

• Added tests/test_sprint29.py — 33 tests covering all 12 security fixes.

---

[v0.38.6] — 2026-04-07

Fixed

• /insights message count always 0 for WebUI sessions (#163, #164): sync_session_usage() wrote token counts, cost, model, and title to state.db but never message_count. Both the streaming and sync chat paths now pass len(s.messages). Note: /insights sync is opt-in — enable Sync to Insights in Settings (it's off by default).

---

[v0.38.5] — 2026-04-06

Fixed

• Custom endpoint URL construction (#138, #160): base_url ending in /v1 was incorrectly stripped before appending /models, producing http://host/models instead of http://host/v1/models. Fixed to append directly.
• custom_providers config entries now appear in dropdown (#138, #160): Models defined under config.yaml custom_providers (e.g. Ollama aliases, Azure model overrides) are now always included in the dropdown, even when the /v1/models endpoint is unreachable.
• Custom endpoint API key reads profile .env (#138, #160): Custom endpoint auth now checks ~/.hermes/.env keys in addition to os.environ.

---

[v0.38.4] — 2026-04-06

Fixed

• Copilot false positive in model dropdown (#158): list_available_providers() reported Copilot as available on any machine with gh CLI auth, because the Copilot token resolver falls back to gh auth token. The dropdown now skips any provider whose credential source is 'gh auth token' — only explicit, dedicated credentials count. Users with GITHUB_TOKEN explicitly set in their .env still see Copilot correctly.

---

[v0.38.3] — 2026-04-06

Fixed

• Model dropdown shows only configured providers (#155): Provider detection now uses hermes_cli.models.list_available_providers() — the same auth check the Hermes agent uses at runtime — instead of scanning raw API key env vars. The dropdown now reflects exactly what the user has configured (auth.json, credential pools, OAuth flows like Copilot). When no providers are detected, shows only the configured default model rather than a full generic list. Added copilot and gemini to the curated model lists. Falls back to env var scanning for standalone installs without hermes-agent.

---

[v0.38.2] — 2026-04-06

Fixed

• Tool cards actually render on page reload (#140, #153): PR #149 fixed the wrong filter — it updated vis but not visWithIdx (the loop that actually creates DOM rows), so anchor rows were never inserted. This PR fixes visWithIdx. Additionally, streaming.py's assistant_msg_idx builder previously only scanned Anthropic content-array format and produced idx=-1 for all OpenAI-format tool calls (the format used in saved sessions); it now handles both. As a final fallback, renderMessages() now builds tool card data directly from per-message tool_calls arrays when S.toolCalls is empty, covering historical sessions that predate session-level tool tracking.

---

[v0.38.1] — 2026-04-06

Fixed

• Model selector duplicates (#147, #151): When config.yaml sets model.default with a provider prefix (e.g. anthropic/claude-opus-4.6), the model dropdown no longer shows a duplicate entry alongside the existing bare-ID entry. The dedup check now normalizes both sides before comparing.
• Stale model labels (#147, #151): Sessions created with models no longer in the current provider list now show "ModelName (unavailable)" in muted text with a tooltip, instead of appearing as a normal selectable option that would fail silently on send.

---

[v0.38.0] — 2026-04-06

Fixed

• Multi-provider model routing (#138): Non-default provider models now use @provider:model format. resolve_model_provider() routes them through resolve_runtime_provider(requested=provider) — no OpenRouter fallback for users with direct provider keys.
• Personalities from config.yaml (#139): /api/personalities reads from config.yaml agent.personalities (the documented mechanism). Personality prompts pass via agent.ephemeral_system_prompt.
• Tool call cards survive page reload (#140): Assistant messages with only tool_use content are no longer filtered from the render list, preserving anchor rows for tool card display.

---

[v0.37.0] /personality command, model prefix routing fix, tool card reload fix

April 6, 2026 | 465 tests

Features

• /personality slash command. Set a per-session agent personality from ~/.hermes/personalities/<name>/SOUL.md. The personality prompt is prepended to the system message for every turn. Use /personality <name> to activate, /personality none to clear, /personality (no args) to list available personalities. Backend: GET /api/personalities, POST /api/personality/set. (PR #143)

Bug Fixes

• Model dropdown routes non-default provider models correctly (#138). When the active provider is anthropic and you pick a minimax model, its ID is now prefixed minimax/MiniMax-M2.7 so resolve_model_provider() can route it through OpenRouter. Guards added: active_provider=None prevents all-providers-prefixed, case is normalised, shared _PROVIDER_MODELS list is no longer mutated by the default_model injector. (PR #142)
• Tool call cards persist correctly after page reload. The reload rendering logic now anchors cards AFTER the triggering assistant row (not before the next one), handles multi-step chains sharing a filtered anchor in chronological order, and filters fallback anchor to assistant rows only. (PR #141)

---

[v0.36.3] Configurable Assistant Name

April 6, 2026 | 449 tests

Features

• Configurable bot name. New "Assistant Name" field in Settings panel. Display name updates throughout the UI: sidebar, topbar, message roles, login page, browser tab title, and composer placeholder. Defaults to "Hermes". Configurable via settings or HERMES_WEBUI_BOT_NAME env var. Server-side sanitization prevents empty names and escapes HTML for the login page. (PR #135, based on #131 by @TaraTheStar)

---

[v0.36.2] OpenRouter model routing fix

April 5, 2026 | 440 tests

Bug Fixes

• OpenRouter models sent without prefix, causing 404 (#116). resolve_model_provider() was stripping the openrouter/ prefix from model IDs (e.g. sending free instead of openrouter/free) when config_provider == 'openrouter'. OpenRouter requires the full provider/model path to route upstream correctly. Fixed with an early return that preserves the complete model ID for all OpenRouter configs. (#127)
• Added 7 unit tests for resolve_model_provider() — first coverage on this function. Tests the regression, cross-provider routing, direct-API prefix stripping, bare models, and empty model.

---

[v0.36.1] Login form Enter key fix

April 5, 2026 | 433 tests

Bug Fixes

• Login form Enter key unreliable in some browsers (#124). onsubmit="return doLogin(event)" returned a Promise (async functions always return a truthy Promise), which could let the browser fall through to native form submission. Fixed with doLogin(event);return false plus an explicit onkeydown Enter handler on the password input as belt-and-suspenders. (#125)

---

[v0.35.1] Model dropdown fixes

April 5, 2026 | 433 tests

Bug Fixes

• Custom providers invisible in model dropdown (#117). cfg_base_url was scoped inside a conditional block but referenced unconditionally, causing a NameError for users with a base_url in config.yaml. Fix: initialize to '' before the block. (#118)
• Configured default model missing from dropdown (#116). OpenRouter and other providers replaced the model list with a hardcoded fallback that didn't include model.default values like openrouter/free or custom local model names. Fix: after building all groups, inject the configured default_model at the top of its provider group if absent. (#119)

---

[v0.34.3] Light theme final polish

April 5, 2026 | 433 tests

Bug Fixes

• Light theme: sidebar, role labels, chips, and interactive elements all broken. Session titles were too faint, active session used washed-out gold, pin stars were near-invisible bright yellow, and all hover/border effects used dark-theme white rgba(255,255,255,.XX) values invisible on cream. Fixed with 46 scoped [data-theme="light"] selector overrides covering session items, role labels, project chips, topbar chips, composer, suggestions, tool cards, cron list, and more. (#105)
• Active session now uses blue accent (#2d6fa3) for strong contrast. Pin stars use deep gold (#996b15). Role labels are solid and high contrast.

---

[v0.34.2] Theme text colors

April 5, 2026 | 433 tests

Bug Fixes

• Light mode text unreadable. Bold text was hardcoded white (invisible on cream), italic was light purple on cream, inline code had a dark box on a light background. Fixed by introducing 5 new per-theme CSS variables (--strong, --em, --code-text, --code-inline-bg, --pre-text) defined for every theme. (#102)
• Also replaced remaining rgba(255,255,255,.08) border references with var(--border), and darkened light theme --code-bg slightly for better contrast.

---

[v0.34.1] Theme variable polish

April 5, 2026 | 433 tests

Bug Fixes

• All non-dark themes had broken surfaces, topbar, and dropdowns. 30+ hardcoded dark-navy rgba/hex values in style.css were stuck on the Dark palette regardless of active theme. Fixed by introducing 7 new CSS variables (--surface, --topbar-bg, --main-bg, --input-bg, --hover-bg, --focus-ring, --focus-glow) defined per-theme, replacing every hardcoded reference. (#100)

---

[v0.31.2] CLI session delete fix

April 5, 2026 | 424 tests

Bug Fixes

• CLI sessions could not be deleted from the sidebar. The delete handler only removed the WebUI JSON session file, so CLI-backed sessions came back on refresh. Added delete_cli_session(sid) in api/models.py and call it from /api/session/delete so the SQLite state.db row and messages are removed too. (#87, #88)

Notes

• The public test suite still passes at 424/424.
• Issue #87 already had a comment confirming the root cause, so no new issue comment was needed here.

[v0.30.1] CLI Session Bridge Fixes

April 4, 2026 | 424 tests

Bug Fixes

• CLI sessions not appearing in sidebar. Three frontend gaps: sessions.js wasn't rendering CLI sessions (missing is_cli_session check in render loop), sidebar click handler didn't trigger import, and the "cli" badge CSS selector wasn't matching the rendered DOM structure. (#58)
• CLI bridge read wrong profile's state.db. get_cli_sessions() resolved HERMES_HOME at server launch time, not at call time. After a profile switch, it kept reading the original profile's database. Now resolves dynamically via get_active_hermes_home(). (#59)
• Silent SQL error swallowed all CLI sessions. The sessions table in state.db has no profile column — the query referenced s.profile which caused a silent OperationalError. The except Exception: return [] handler swallowed it, returning zero CLI sessions. Removed the column reference and added explicit column-existence checks. (#60)

Features

• "Show CLI sessions" toggle in Settings. New checkbox in the Settings panel to show/hide CLI sessions in the sidebar. Persisted server-side in settings.json (show_cli_sessions, default true). When disabled, CLI sessions are excluded from /api/sessions responses. (#61)

---

[v0.28.1] CI Pipeline + Multi-Arch Docker Builds

April 3, 2026 | 426 tests

Features

• GitHub Actions CI. New workflow triggers on tag push (v*). Builds multi-arch Docker images (linux/amd64 + linux/arm64), pushes to ghcr.io/nesquena/hermes-webui, and creates a GitHub Release with auto-generated release notes. Uses GHA layer caching for fast rebuilds.
• Pre-built container images. Users can now docker pull ghcr.io/nesquena/hermes-webui:latest instead of building locally.

---

[v0.18.1] Safe HTML Rendering + Sprint 16 Tests

April 2, 2026 | 289 tests

Features

• Safe HTML rendering in AI responses. AI models sometimes emit HTML tags (<strong>, <em>, <code>, <br>) in their responses. Previously these showed as literal escaped text. A new pre-pass in renderMd() converts safe HTML tags to markdown equivalents before the pipeline runs. Code blocks and backtick spans are stashed first so their content is never touched.
• inlineMd() helper. New function for processing inline formatting inside list items, blockquotes, and headings. The old code called esc() directly, which escaped tags that had already been converted by the pre-pass.
• Safety net. After the full pipeline, any HTML tags not in the output allowlist (SAFE_TAGS) are escaped via esc(). XSS fully blocked -- 7 attack vectors tested.
• Active session gold style. Active session uses gold/amber (#e8a030) instead of blue, matching the logo gradient. Project border-left skipped when active (gold always wins).

Tests

• 74 new tests in test_sprint16.py: static analysis (6), behavioral (10), exact regression (1), XSS security (7), edge cases (51). Total: 289 passed.

---

[v0.17.3] Bug Fixes

April 2, 2026

Bug Fixes

• NameError crash in model discovery. logger.debug() was called in the custom endpoint except block in config.py, but logger was never imported. Every failed custom endpoint fetch crashed with NameError, returning HTTP 500 for /api/models. Replaced with silent pass since unreachable endpoints are expected. (PR #24)
• Project picker clipping and width. Picker was clipped by overflow:hidden on ancestor elements. Width calculation improved with dynamic sizing (min 160px, max 220px). Event listener close handler moved after DOM append to fix reference-before-definition. Reordered picker.remove() before removeEventListener for correct cleanup. (PR #25)

---

[v0.17.2] Model Update

April 2, 2026

Enhancements

• GLM-5.1 added to Z.AI model list. New model available in the dropdown for Z.AI provider users. (Fixes #17)

---

[v0.17.1] Security + Bug Fixes

April 2, 2026 | 237 tests

Security

• Path traversal in static file server. _serve_static() now sandboxes resolved paths inside static/ via .relative_to(). Previously GET /static/../../.hermes/config.yaml could expose API keys.
• XSS in markdown renderer. All captured groups in bold, italic, headings, blockquotes, list items, table cells, and link labels now run through esc() before innerHTML insertion.
• Skill category path traversal. Category param validated to reject / and .. to prevent writing outside ~/.hermes/skills/.
• Debug endpoint locked to localhost. /api/approval/inject_test returns 404 to any non-loopback client.
• CDN resources pinned with SRI hashes. PrismJS and Mermaid tags now have integrity + crossorigin attributes. Mermaid pinned to @10.9.3.
• Project color CSS injection. Color field validated against ^#[0-9a-fA-F]{3,8}$ to prevent style.background injection.
• Project name length limit. Capped at 128 chars, empty-after-strip rejected.

Bug Fixes

• OpenRouter model routing regression. resolve_model_provider() was incorrectly stripping provider prefixes from OpenRouter model IDs (e.g. openai/gpt-5.4-mini became gpt-5.4-mini with provider openai), causing AIAgent to look for OPENAI_API_KEY and crash. Fix: only strip prefix when config.provider explicitly matches that direct-API provider.
• Project picker invisible. Dropdown was clipped by .session-item overflow:hidden. Now appended to document.body with position:fixed.
• Project picker stretched full width. Added max-width:220px; width:max-content to constrain the fixed-positioned picker.
• No way to create project from picker. Added "+ New project" item at the bottom of the picker dropdown.
• Folder button undiscoverable. Now shows persistently (blue, 60% opacity) when session belongs to a project.
• Picker event listener leak. removeEventListener added to all picker item onclick handlers.
• Redundant sys.path.insert calls removed. Two cron handler imports no longer prepend the agent dir (already on sys.path via config.py).

---

[v0.16.2] Model List Updates + base_url Passthrough

April 1, 2026 | 247 tests

Bug Fixes

• MiniMax model list updated. Replaced stale ABAB 6.5 models with current MiniMax-M2.7, M2.7-highspeed, M2.5, M2.5-highspeed, M2.1 lineup matching hermes-agent upstream. (Fixes #6)
• Z.AI/GLM model list updated. Replaced GLM-4 series with current GLM-5, GLM-5 Turbo, GLM-4.7, GLM-4.5, GLM-4.5 Flash lineup.
• base_url passthrough to AIAgent. resolve_model_provider() now reads base_url from config.yaml and passes it to AIAgent, so providers with custom endpoints (MiniMax, Z.AI, local LLMs) route to the correct API.

---

[v0.16.1] Community Fixes -- Mobile + Auth + Provider Routing

April 1, 2026 | 247 tests

Community contributions from @deboste, reviewed and refined.

Bug Fixes

• Mobile responsive layout. Comprehensive @media(max-width:640px) rules for topbar, messages, composer, tool cards, approval cards, and settings modal. Uses 100dvh with 100vh fallback to fix composer cutoff on mobile browsers. Textarea font-size:16px prevents iOS/Android auto-zoom on focus.
• Reverse proxy basic auth support. All fetch() and EventSource URLs now constructed via new URL(path, location.origin) to strip embedded credentials per Fetch spec. credentials:'include' on fetch, withCredentials:true on EventSource ensure auth headers are forwarded through reverse proxies.
• Model provider routing. New resolve_model_provider() helper in api/config.py strips provider prefix from dropdown model IDs (e.g. anthropic/claude-sonnet-4.6 → claude-sonnet-4.6) and passes the correct provider to AIAgent. Handles cross-provider selection by matching against known direct-API providers.

---

[v0.12.2] Concurrency + Correctness Sweeps

March 31, 2026 | 190 tests

Two systematic audits of all concurrent multi-session scenarios. Each finding became a regression test so it cannot silently return.

Sweep 1 (R10-R12)

• R10: Approval response to wrong session. respondApproval() used S.session.session_id -- whoever you were viewing. If session A triggered a dangerous command requiring approval and you switched to B then clicked Allow, the approval went to B's session_id. Agent on A stayed stuck. Fixed: approval events tag _approvalSessionId; respondApproval() uses that.
• R11: Activity bar showed cross-session tool status. Session A's tool name appeared in session B's activity bar while you were viewing B. Fixed: setStatus() in the tool SSE handler is now inside the activeSid guard.
• R12: Live tool cards vanished on switch-away and back. Switching back to an in-flight session showed empty live cards even though tools had fired. Fixed: loadSession() INFLIGHT branch now restores cards from S.toolCalls.

Sweep 2 (R13-R15)

• R13: Settled tool cards never rendered after response completes. renderMessages() has a !S.busy guard on tool card rendering. It was called with S.busy=true in the done handler -- tool cards were skipped every time. Fixed: S.busy=false set inline before renderMessages().
• R14: Wrong model sent for sessions with unlisted model. send() used $('modelSelect').value which could be stale if the session's model isn't in the dropdown. Fixed: now uses S.session.model || $('modelSelect').value.
• R15: Stale live tool cards in new sessions. newSession() didn't call clearLiveToolCards(). Fixed.

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[v0.12.1] Sprint 10 Post-Release Fixes

March 31, 2026 | 177 tests

Critical regressions introduced during the server.py split, caught by users and fixed immediately.

• uuid not imported in server.py -- chat/start returned 500 (NameError) on every new message
• AIAgent not imported in api/streaming.py -- agent thread crashed immediately, SSE returned 404
• has_pending not imported in api/streaming.py -- NameError during tool approval checks
• Session.__init__ missing tool_calls param -- 500 on any session with tool history
• SSE loop did not break on cancel event -- connection hung after cancel
• Regression test file added (tests/test_regressions.py): 10 tests, one per introduced bug. These form a permanent regression gate so each class of error can never silently return.

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