Fix branch selector default and loading behavior in worktree mode

- Default new worktree branch selection to the current checked-out branch when unset
- Extract branch value resolution into shared logic with tests
- Stabilize virtualized branch list scroll/measurement to avoid loading glitches
9ca9a862a5Julius Marminge committed on 3/3/2026, 6:01:18 PM· committed by Julius Marmingeparent827dc9f
3 files changedLine totals unavailable