Introduce a `NullString` type to distinguish between JSON `null` and
absent fields in `UpdateDrawingRequest`. This ensures that when a
field is explicitly set to `null` in a request, the database can
correctly process the update.
Additionally, refactor the folder order migration to include proper
`goose` up/down instructions.
Implements multi-select functionality in the file browser, allowing users to
perform batch actions such as deleting or moving multiple drawings at once.
Adds full CRUD support for folders, including updating folder properties
and reordering folders via a new `sort_order` column in the database.
- feat(ui): add multi-select, batch delete, and batch move in FileBrowser
- feat(api): add endpoints for updating, deleting, and reordering folders
- feat(db): add `sort_order` column and index to `workspace_folders`
- fix(editor): integrate `useHandleLibrary` for better library management
- chore(deps): update excalidraw subproject
Tomas Dvorak