Show worktree name in thread delete confirmation

- Format orphaned worktree paths to display only the final segment
- Apply formatting in Sidebar delete prompt for cleaner UX
- Add tests for Unix, Windows, trailing slash, and fallback cases
04d17b3adcJulius Marminge committed on 2/13/2026, 6:52:04 AMparent10571fa
3 files changedLine totals unavailable