scene_pipelines.schemas.scene
SCENE shared identity + session graph (Lab, Subject, Project, Session, …).
Placeholder scientific tables — definitions are subject to change.
DDL: SCENE_SCHEMA_VERSION / SchemaVersion.
Row write provenance lives in scene_pipelines.schemas.provenance
(e.g. Deployment, SessionRowMeta, LabRowMeta, ProjectRowMeta, SubjectRowMeta).