Engine Config iii has two engine configuration modes. Do not mix them. Managed Compose engine The presence of means that Compose owns the engine process. Engine worker values are direct mappings; there is no nested field. Start it with: defaults to and uses Compose's expansion. stays opaque until the engine reads the generated YAML, so its values use and retain numeric types. Compose materializes an owner-only config under and removes it after clean shutdown. With , it uses . Changing requires restarting Compose. Do not combine a managed file with explicit . Allowed engine worker base names a…