Feature: Add PR review comments and resolution, improve AI prompt handling (#790)

* feat: Add PR review comments and resolution endpoints, improve prompt handling

* Feature: File Editor (#789)

* feat: Add file management feature

* feat: Add auto-save functionality to file editor

* fix: Replace HardDriveDownload icon with Save icon for consistency

* fix: Prevent recursive copy/move and improve shell injection prevention

* refactor: Extract editor settings form into separate component

* ```
fix: Improve error handling and stabilize async operations

- Add error event handlers to GraphQL process spawns to prevent unhandled rejections
- Replace execAsync with execFile for safer command execution and better control
- Fix timeout cleanup in withTimeout generator to prevent memory leaks
- Improve outdated comment detection logic by removing redundant condition
- Use resolveModelString for consistent model string handling
- Replace || with ?? for proper falsy value handling in dialog initialization
- Add comments clarifying branch name resolution logic for local branches with slashes
- Add catch handler for project selection to handle async errors gracefully
```

* refactor: Extract PR review comments logic to dedicated service

* fix: Improve robustness and UX for PR review and file operations

* fix: Consolidate exec utilities and improve type safety

* refactor: Replace ScrollArea with div and improve file tree layout

apps/ui/src/lib/http-api-client.ts

@@ -2474,6 +2474,10 @@ export class HttpApiClient implements ElectronAPI {
       this.subscribeToEvent('issue-validation:event', callback as EventCallback),
     getIssueComments: (projectPath: string, issueNumber: number, cursor?: string) =>
       this.post('/api/github/issue-comments', { projectPath, issueNumber, cursor }),
+    getPRReviewComments: (projectPath: string, prNumber: number) =>
+      this.post('/api/github/pr-review-comments', { projectPath, prNumber }),
+    resolveReviewThread: (projectPath: string, threadId: string, resolve: boolean) =>
+      this.post('/api/github/resolve-pr-comment', { projectPath, threadId, resolve }),
   };
 
   // Workspace API