Completes the FileEditor mobile toolbar refactor (FN-4125) by wiring up the line-number toggle with mobile-responsive styling and adding tests for both the toggle and the FileBrowserModal changes.
Fusion-Task-Id: FN-4125
This merge adds a line-number toggle to the Files modal with persisted preference, introduces an AgentAvatar component with server-side avatar storage routes, and adds documentation for both the toggle and avatar storage. It also includes a regression test for runtime plugin alias behavior and updat
Fusion-Task-Id: FN-3528
- Add word wrap toggle button with WrapText icon to FileEditor
- Fix markdown preview scrolling with height: 100% CSS
- Add comprehensive tests for word wrap toggle and scrollability
- Add server-side file service with list, read, and write operations
- Add REST API endpoints for file operations with tests
- Add client-side API functions and React hooks for file browsing
- Create FileBrowser, FileEditor, and FileBrowserModal components
- Add CodeMirror 6 for syntax-highlighted file editing
- Integrate Files tab into TaskDetailModal
- Add comprehensive file browser styles and responsive design
