EntityItemByToken — database-facing partial item narrowed to a specific entity token.
Mirrors EntityItem<CC> with the entity surface restricted to EntityOfToken<CC, ET>.
Note: If using createEntityManager with entitiesSchema, the schema must declare
only base (non-generated) properties. Generated keys/tokens are layered by EntityManager.
EntityItemByToken — database-facing partial item narrowed to a specific entity token. Mirrors
EntityItem<CC>with the entity surface restricted toEntityOfToken<CC, ET>.Note: If using createEntityManager with entitiesSchema, the schema must declare only base (non-generated) properties. Generated keys/tokens are layered by EntityManager.