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- Improve outdated comment detection logic by removing redundant condition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/components/dialogs/index.ts

@@ -5,4 +5,6 @@ export { FileBrowserDialog } from './file-browser-dialog';
 export { NewProjectModal } from './new-project-modal';
 export { SandboxRejectionScreen } from './sandbox-rejection-screen';
 export { SandboxRiskDialog } from './sandbox-risk-dialog';
+export { PRCommentResolutionDialog } from './pr-comment-resolution-dialog';
+export type { PRCommentResolutionPRInfo } from './pr-comment-resolution-dialog';
 export { WorkspacePickerModal } from './workspace-picker-modal';