- Rename package from @gsxdsm/kb to @gsxdsm/fusion in package.json and metadata
- Update all documentation references (README, RELEASING, STANDALONE, AGENTS.md)
- Update root workspace scripts for new package name
- Update changeset files to reference @gsxdsm/fusion and @fusion/dashboard
- Update CHANGELOG.md with new package name references
- 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
