- Updated DocumentNode to use a div instead of a button for better accessibility and added keyboard interaction for selection.
- Introduced Checkbox component in FolderNode for selecting folders, with state management for selection (all, some, none).
- Implemented folder selection state logic in FolderTreeView to manage document selection across nested folders.
- Added handleToggleFolderSelect function in DocumentsSidebar to manage selection of documents based on folder selection.
- Implemented a new export endpoint in the backend to support exporting documents in various formats (PDF, DOCX, HTML, LaTeX, EPUB, ODT, plain text).
- Enhanced DocumentNode and FolderTreeView components to include export options in context and dropdown menus.
- Created shared ExportMenuItems component for consistent export options across the application.
- Integrated loading indicators for export actions to improve user experience.
