- Default CORS_ORIGINS to http://localhost:5173 instead of "*" (still overridable)
- Reject ".." and leading "/" in document keys/paths across get/save/delete/upload,
mapped to HTTP 400 via new InvalidPathError
- Add a delete button to DocumentEditor wired to deleteDocument + onDeleted,
giving the existing DELETE API an actual UI entry point
- Share a single lru_cache'd Meilisearch (and Minio) SDK client instance instead
of constructing duplicates in dependencies.py
- Add a startup check that creates the MinIO bucket if missing, tolerating
MinIO being unreachable at boot without crashing the app
