The Saved Messages panel showed bookmarks in one fixed order (newest
save first) with no way to reorganize. Add a Newest / Oldest / By-room
segmented sort control to the panel toolbar. In "By room" mode the list
renders collapsible per-room sections, with groups ordered by their most
recently saved message so active rooms float to the top. The chosen sort
persists across panel opens via a localStorage-backed atom.
Ordering and grouping are pure functions in utils/bookmarks.ts
(sortBookmarks, groupBookmarksByRoom) with deterministic eventId
tie-breaks, covered by bookmarks.test.ts (9 tests). No change to the
bookmark data model, account-data schema, useBookmarks, or how bookmarks
are created; search still feeds the sorter/grouper unchanged.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
