Fix: Delete Worktree Crash + PR Comments + Dev Server UX Improvements (#792)

* Changes from fix/delete-worktree-hotifx

* fix: Improve bot detection and prevent UI overflow issues

- Include GitHub app-initiated comments in bot detection
- Wrap handleQuickCreateSession with useCallback to fix dependency issues
- Truncate long branch names in agent header to prevent layout overflow

* feat: Support GitHub App comments in PR review and fix session filtering

* feat: Return invalidation result from delete session handler

libs/types/src/session.ts

@@ -6,6 +6,7 @@ export interface AgentSession {
   id: string;
   name: string;
   projectPath: string;
+  workingDirectory?: string; // The worktree/directory this session runs in
   createdAt: string;
   updatedAt: string;
   messageCount: number;