Resolve remove_directory_from_rag paths through the same PERSONAL_DIR confinement helper used by add_directory_to_rag before removal sinks are reached.
Lock the API key encryption key file to owner-only permissions on creation and when reading existing keys, with regression coverage for permissions and encryption roundtrip.
Clarify in the Docker install section that Apple Silicon Docker cannot use Metal GPU acceleration for Cookbook model serving and point users to the native Apple Silicon path.
Tom