major refactor

core/schema/models/__init__.py

@@ -25,11 +25,10 @@ from .grpc import (
     ProgressUpdate,
     WorkerStatus,
 )
-from .job import (
-    Job, JobStatus, RunType,
-    Timeline, Checkpoint,
-    BrandSource, Brand,
-)
+from .job import Job, JobStatus, RunType
+from .timeline import Timeline
+from .checkpoint import Checkpoint
+from .brand import BrandSource, Brand
 from .media import AssetStatus, MediaAsset
 from .presets import BUILTIN_PRESETS, TranscodePreset
 from .detect import DETECT_VIEWS  # noqa: F401 — discovered by modelgen generic loader