fix: preserve session history during compression rotation (theh4v0c, closes#2223 — critical data-loss)
+ duplicate Appearance label-markup fix overlapping with #2222
Conflict resolution:
(1) static/index.html line ~896 — PR #2222 and PR #2227 both fix the same
endless-scroll checkbox label issue with different structures.
- #2222 (HEAD): wraps the input+span in an in-place <label> inside the
shared session-jump settings-field div.
- #2227 (incoming): closes the existing settings-field, opens a NEW
settings-field for endless-scroll, then wraps in <label>. Strictly
better — each preference owns its own settings-field, matching the
rest of the Settings → Appearance layout.
Adopted #2227's structural variant. Regression test
test_session_endless_scroll.py was updated by #2222 to match the new
structure and passes against the resolved markup.
(2) CHANGELOG.md — both PRs added a Fixed entry. Merged both attributions,
leading with the critical #2223 data-loss fix from #2227 (immutable
pre-compression archive + parent_session_id lineage stamping) and
noting that the maintainer chose #2227's structural variant for the
label-markup overlap.
11/11 tests pass across test_session_endless_scroll.py +
test_issue2223_compression_no_rename.py after resolution.
The settingsSessionEndlessScroll checkbox and label were nested inside
the session-jump description div with a stray </label> closing tag,
causing browser markup recovery to shift the control layout.
Fix: properly close the session-jump settings-field div, create a new
settings-field div with margin-top:8px, and wrap the endless-scroll
checkbox in its own <label> element consistent with other Appearance
checkboxes.
The previous implementation renamed old_sid.json → new_sid.json during
context compression, destroying the only persistent copy of the full
conversation history. If the summarisation LLM call also failed, the
user was left with zero recoverable messages.
Fix:
- Remove the destructive old_path.rename(new_path) call
- Preserve old_sid.json as an immutable pre-compression archive
- Create new_sid.json as a fresh file via s.save()
- Set parent_session_id on the continuation session for lineage
- Save in-memory messages to old_sid.json if they're newer than disk
Test: test_issue2223_compression_no_rename.py (6 tests, all passing)
Refs #2215 Fix A: replace plain dict _summary_cache with OrderedDict-based LRU capped at 16 entries to prevent unbounded memory growth from long-running update summary generations.
Add regression coverage for the bounded LRU behavior: cache hits refresh recency, a new entry at capacity evicts the least-recently used key, and cache size never exceeds the cap.
Refs #2215 Fix B: remove the mid-response stripping hazard without losing leading multi-line wrapper cleanup.
The pattern now strips only a leading 'the user is asking' wrapper line and preserves the visible answer that follows. Add regression coverage for both the leading-wrapper and mid-response prose cases.
perf(sessions): cache CLI session scans (starship-s)
Conflict resolution on api/routes.py:
(1) Master grew a new helper '_messages_include_tool_metadata()' that
pr-2149 doesn't have. Kept it (unrelated function — detects whether
returned messages contain tool metadata, used elsewhere).
(2) pr-2149 renames the CLI-metadata gate from '_needs_cli_session_metadata'
to '_session_requires_cli_metadata_lookup' AND broadens it to cover
legacy-imported sidecars with 'read_only=False' but persisted 'is_cli_session'
or session_source markers. The new gate is strictly more inclusive than
the master version — covers (a) is_cli_session, (b) read_only=True,
(c) session_source in {messaging, external_agent}, AND (d) source_tag,
raw_source, source, source_label, platform markers. All sessions that
previously took the slow path still do, plus a few more legacy shapes
that needed CLI metadata for correct display.
(3) Removed the obsolete '_needs_cli_session_metadata()' definition from
master (only consumer migrated to the new name).
29/29 tests pass across test_session_cli_scan_fast_path (new), claude_code
session import, session_index, and session_lineage_full_transcript.
Opus flagged that PR #2151's cancel-handler partial-dedup loop used a
substring check that was too broad: any short prior assistant reply
('OK', 'Here is the answer:') would dedup a longer new partial containing
it, silently dropping the partial and resurrecting the #893 data-loss bug.
Tightened to only dedup against actual prior _partial=True markers with
exact (whitespace-stripped) content match. Three new regression tests
added (short-non-partial-prefix-does-not-dedup, exact-partial-match-still-
dedups, same-content-non-partial-does-not-dedup).
10/10 partial-cancel tests pass after the fix. Also updated CHANGELOG with
the conflict-resolution notes for #2151 vs #2136 and the #2178 test-fix.
PR #2178 added an 'allowOllamaFormat' guard (resolves to false for non-ollama
@-provider prefixes like '@custom:ai_gateway') to stop the ollama label
formatter from reformatting custom-provider model IDs with dashes. The
existing test asserted on the pre-PR code shape and didn't pick up the new
guard.
Updated the assertion to match the actual post-PR code at static/ui.js:2202,
with an extended docstring explaining the bug class the guard fixes (bare
custom-provider model IDs like 'Qwen3.6-35B-A3B' had hyphens stripped to
spaces + last letter lowercased by the formatter).
fix: clarify cancelled chat turn status (Jordan-SkyLF)
Conflict resolution on api/streaming.py:4549-4567 (the cancel-handler
ownership guard). Both this PR and the already-shipped PR #2136 add a
guard at the same site against stale stream writebacks, from different
angles:
- PR #2136 (HEAD): _stream_writeback_is_current(_cs, stream_id) — strictly
dominates by checking the active_stream_id token equality.
- PR #2151: 'worker won the race' check via (active_stream_id != stream_id
and not pending_user_message), with _emit_cancel_event = False to suppress
the terminal cancel event.
Resolution merges both: keep #2136's strictly-stronger condition for skip
detection, and adopt #2151's _emit_cancel_event = False semantic so the
cancel event isn't emitted in addition to skipping the writeback (when
client may have already received the successful done payload).
55/55 tests pass across cancelled-turn-status + stale-stream-writeback +
the four cancel/data-loss sibling test files.
Hermes Agent