Keep composer focused after toolbar and mode changes

- Add a shared composer-focus scheduler in `ChatView`
- Refocus composer after runtime mode, model, effort, and env mode selections
- Let `BranchToolbar` request composer focus after branch/worktree actions
dd23bd73d9Julius Marminge committed on 2/16/2026, 12:27:25 AM· committed by Julius Marmingeparent8dd1074
2 files changedLine totals unavailable