The file tree already supported file rename (double-click), file delete
(button), and create file/folder. This adds the missing directory
operations:
Backend:
- _handle_file_delete now supports directories when recursive=true
(uses shutil.rmtree instead of blocking with an error)
Frontend:
- Right-click context menu on all file/directory items with Rename
and Delete options (follows the project context menu pattern)
- Directory delete button (x) with confirmation dialog
- _inlineRenameFileItem() for renaming dirs via context menu prompt
- Expanded-dir cache is updated on rename/delete to stay consistent
- Context menu auto-positions within viewport bounds
i18n: delete_dir_confirm, rename_title, rename_prompt in all 7 locales
Closes#1104
38df294af9