fix(cmux-next): keep workspace chats stable during updates
Closed
TE
19d ago+250-6
Summary
Keep workspace and chat rows stable while live snapshots update. Equal-time chats now use durable IDs as a tie-breaker, and workspace title arrival is instant by default so switching does not crossfade two titles in one slot.
Changelog
Fixed workspace and chat switching flicker when multiple rows report the same recent timestamp.
Validation
cd webviews && bun test test/new-tab-steady-chats.test.tsxcd webviews && bun run typecheck- Swift default regression test added for instant workspace title arrival.
Supersedes the contested codex/workspace-hitch-fix head for a stable exact-head merge receipt.
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Summary by cubic
Keeps workspace and chat rows stable while live snapshots update, and adds a priority ordering that surfaces actionable workspaces first.
- Chats that share a timestamp now tie-break on their durable session ID, so snapshot arrival order can't flip rows.
- Workspace title arrival is instant by default, so switching no longer crossfades two titles in one slot.
SidebarPrioritymoves actionable workspaces (needs input, failed, working) ahead of finished and idle rows, preserving manual order for ties and leaving pinned sections untouched.