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 ## [Unreleased]
 
+## [v0.51.158] — 2026-05-29 — Release ED (stage-batch40 — 5-PR low-risk cleanup: numpad/keyboard composer fixes + Joplin search auth + provider-qualified model preservation + SSE fallback poll throttle + assistant-reply polish)
+
 ### Changed
 
 - WebUI chat instructions now explicitly prevent terse scratchpad/planning fragments from appearing in visible assistant replies, while still allowing clear user-facing progress updates during tool-heavy work.
 
 ### Fixed
 
+- The chat composer no longer forces mobile newline-on-Enter behavior on touch-primary devices that also have a fine pointer present (tablet plus Bluetooth keyboard, detachable Surface, iPad plus Magic Keyboard), so Enter submits with desktop semantics when a real keyboard is in the picture.
+- The active-session external-refresh fallback poll now fires every 30 s instead of every 5 s. The SSE session-events stream already pushes invalidations in real time, so the poll is only a fallback; the slower interval removes visible scroll jitter and a network/CPU floor on long sessions.
+- The model picker no longer fuzzy-matches a provider-qualified model id (`@provider:model` or slash-qualified `vendor/model`) to a nearby curated sibling once exact lookup fails, preserving the raw typed value so uncatalogued models stay routable instead of silently snapping to a different model.
 - Joplin notes search now keeps the `Authorization` header and adds a query-token compatibility shim only for Web Clipper `/search` calls, covering clipper builds that return HTTP 403 for header-only search auth while keeping other Joplin API URLs token-free.
 
 ## [v0.51.157] — 2026-05-28 — Release EC (stage-batch39 — 5-PR mixed-risk cleanup: gateway prefill forward + prefill budget + compressed-continuation sidebar + browser-transcript memory guidance + reasoning max parity)