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* refactor(timeline): drop server-side comment + timeline pagination (MUL-1929) The cursor-paginated /timeline and /comments endpoints were sized for a problem the data shape doesn't have: prod p99 is ~30 comments per issue and the all-time max is ~1.1k. Time-based pagination also splits reply threads across page boundaries (orphan replies), which the frontend was papering over with an "orphan rescue" that promoted disconnected replies to top-level — confusing UX with no real benefit. Replace both endpoints with a single full-issue fetch, capped server-side at 2000 rows as a defensive safety net (never hit in practice). Server - /api/issues/:id/timeline now returns a flat ASC TimelineEntry[] (matches the legacy desktop contract — older Multica.app builds keep working because the wrapped TimelineResponse + cursors are gone, and the raw array shape was always what they consumed). - /api/issues/:id/comments drops limit/offset; only ?since is honoured for the CLI agent-polling flow. - Drop ListCommentsBefore/After/Latest, ListActivitiesBefore/After/Latest and the timelineCursor encoding. - Replace with ListCommentsForIssue / ListCommentsSinceForIssue / ListActivitiesForIssue (capped by argument). CLI - multica issue comment list drops --limit / --offset and the X-Total-Count reporting; --since is preserved for incremental polling. Frontend - Replace useInfiniteQuery with useQuery in useIssueTimeline; drop fetchOlder/Newer, jumpToLatest, isAtLatest, newEntriesBelowCount. - Remove timeline-cache helpers (mapAllEntries / filterAllEntries / prependToLatestPage) and the TimelinePage / TimelinePageParam types. - WS event handlers update the single flat-array cache directly. - Drop the orphan-reply rescue in issue-detail — every reply's parent is now guaranteed to be in the same array. - Strip the "show older / show newer / jump to latest" buttons and their i18n strings. Co-authored-by: multica-agent <github@multica.ai> * fix(timeline): address review feedback on pagination removal Three issues caught in PR #2322 review: 1. /timeline broke for stale clients between #2128 and this PR. They send ?limit/?before/?after/?around and parse with the wrapped TimelinePageSchema; the new flat-array response was failing schema validation and falling back to an empty timeline. Restore the wrapped shape on those query params (DESC entries, null cursors, has_more_*=false), keeping the flat ASC array for bare requests. Around-mode now also fills target_index from the merged slice so legacy clients can still scroll-to-anchor without a follow-up. 2. The agent prompts in runtime_config.go and prompt.go still told agents that `multica issue comment list` accepts --limit/--offset and to use `--limit 30` on truncated output. With those flags removed in this PR, new agent runs would hit "unknown flag" or skip context. Update the prompt copy to "returns all comments, capped at 2000; --since for incremental polling". 3. useCreateComment's onSuccess was a bare append to the timeline cache with no id-dedupe, so a fast comment:created WS event firing before onSuccess produced a transient duplicate. Restore the id guard the old prependToLatestPage helper used to provide. Adds two new boundary tests: - TestListTimeline_LegacyWrappedShape_OnPaginationParams - TestListTimeline_LegacyWrappedShape_AroundFillsTargetIndex Co-authored-by: multica-agent <github@multica.ai> * test(handler): fix timeline test assertions for handler-package isolation The TestListTimeline_* assertions assumed CreateIssue would seed an "issue_created" activity_log row, but the activity listener that publishes those rows is registered in cmd/server/main.go — handler-package tests don't wire it up. CI saw 5 entries (3 comments + 2 activities) where the test expected ≥6. Drop the auto-activity assumption: assert exactly 5 entries in TestListTimeline_MergesCommentsAndActivities, and tighten TestListTimeline_EmptyIssue to assert a fully-empty timeline. Co-authored-by: multica-agent <github@multica.ai> --------- Co-authored-by: multica-agent <github@multica.ai>