Namespace PR worktree branch names under t3code

- Change local PR worktree branch format from `pr/<number>-<head>` to `t3code/pr-<number>/<head>`
- Update GitManager tests to assert the new branch naming convention
076608021cJulius Marminge committed on 3/10/2026, 5:50:45 AM· committed by Julius Marmingeparentfb4f9aa
2 files changedLine totals unavailable