Changes:
- feat: add build stamping and archive session filtering
- refactor: filter sessions by cwd and add NewSessionAppBar component
- refactor: consolidate path utilities into singleton service
- fix: properly stop reconnection on manual disconnect
- fix: exclude test files from build tsconfig (CI build fix)
- fix: add missing codex:list-models MessageType
- chore: add pre-push hook with clean worktree CI-equivalent checks