## What changed
- Display owner thread titles, relative update times, and archived or unavailable status in the managed worktree browser. Offer resume only for resumable owners, including those with compressed thread history.
- Add a delete action with a confirmation dialog that defaults to Cancel and preserves thread history.
- Restrict removal to managed worktrees in the current repository. Refuse the current checkout, including path aliases, and checkouts containing local changes, untracked files, or ignored files.
## Testing
Add browser snapshots and tests for owner states, deletion confirmation, and compressed thread history. Add worktree removal coverage for unrelated checkouts, current-directory aliases, untracked and ignored files, and successful removal of a clean checkout.
GitOrigin-RevId: e5867f1540d5d5bc8130acc76875e51e3d8b3b6a
973dcd80fc