Adds the unified file manager view (Windows Explorer-style), collapsible
folder tree sidebar item, full vitest test suite (55 tests, 4 files), and
commits all Phase 4 backend/frontend fixes that were staged but uncommitted.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- backend/api/folders.py: POST /api/folders (create), GET /api/folders (list),
GET /api/folders/{id} (breadcrumb), PATCH /api/folders/{id} (rename),
DELETE /api/folders/{id} (cascade-delete + atomic quota decrement),
PATCH /api/documents/{id}/folder (move document)
- All folder endpoints use get_regular_user (admin gets 403); 404 for IDOR
- IntegrityError caught -> 409 on duplicate folder name under same parent
- WITH RECURSIVE CTE for subtree collection with SQLite fallback (OperationalError)
- Atomic quota decrement with CASE WHEN pattern (SQLite compat)
- MinIO object deletion best-effort (per-object try/except)
- write_audit_log called after folder.created, folder.renamed, folder.deleted
- backend/api/documents.py: add sort, order, folder_id, q params to list_documents;
add is_shared field to each document in response using Share subquery
- backend/main.py: register folders_router and document_move_router
curo1305