Replay of PR #1061 (tho/activity-ui-polish) onto fresh main: lands the
20 UI-polish commits as one net diff, reconciled with #1229's merged
declared-ownership model (viewerIsOwner = isCurrentUserOwner || isOwner)
and #1089's content-visibility-auto virtualization.
Notable reconciles:
- markdown.tsx: ported the compact/tight variant system into main's
newer lightbox/spoiler markdown component (rather than overwriting it),
layering variant density/leading overrides after the base owl-spacing
so tailwind-merge wins. Dropped the branch's hardcoded text-[15px] in
favor of main's rem-token text-sm base (post-#1052 zoom-safe scale).
- agentSessionTranscript.ts: pass TranscriptItemContext (not channelId).
- managed_agents: thread avatar_url through ManagedAgentSummary so the
transcript renders the assistant-bubble avatar from the pinned record
snapshot; bumped runtime.rs size override 2001 -> 2002 for the +1 line.
Observer-seed screenshots intentionally excluded (separate follow-up).
Co-authored-by: Taylor Ho <taylorkmho@gmail.com>
Signed-off-by: Taylor Ho <taylorkmho@gmail.com>
