- Toast queue: a burst of notifications appended unboundedly and could cover the
viewport. Cap at 5 in the atom writer, dropping the OLDEST non-sticky toast
(sticky = action toasts requiring a click, never dropped). The drop scan
excludes the just-appended newest (`length - 1` bound) so a fresh toast is
never the one eaten when the cap is full of stickies — it stretches instead.
Container gains a maxHeight + overflowY safety net and scrolls the newest
(bottom) toast into view if the stack ever overflows. +4 unit tests incl. the
cap-full-of-stickies boundary.
- "Unread First" room sort left the entire read tail (all counts tie at 0) in
arbitrary Map order. factoryRoomIdByUnread now breaks ties by recent activity.
Relocated from Home.tsx (module-private) to utils/sort.ts (exported, pure) and
unit-tested (equal-count and read-tail cases fall back to activity).
Bug-hunt findings from LOTUS_TODO. Three review passes: the second caught that
the cap could silently drop the newest notification when full of stickies (real
bug, untested boundary) — fixed and covered; a third traced the corrected loop.
Gate-green (tsc, eslint, prettier, 920 tests, build).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
jaredandClaude Opus 4.8
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