timeline

core/schema/models/__init__.py

@@ -81,8 +81,6 @@ __all__ = [
     "Job",
     "Timeline",
     "Checkpoint",
-    "KnownBrand",
-    "SourceBrandSighting",
     # Enums
     "AssetStatus",
     "JobStatus",

core/schema/models/stages.py

@@ -48,6 +48,11 @@ class StageDefinition:
     io: StageIO = field(default_factory=StageIO)
     config_fields: List[StageConfigField] = field(default_factory=list)
 
+    # The box label this stage produces that should be time-tracked in the editor.
+    # Set to the label string (e.g. "edge_region") for stages that have a
+    # meaningful temporal element. None means no motion tracker overlay.
+    tracks_element: Optional[str] = None
+
     # Legacy fields — used by old registry pattern during migration.
     # New stages use Stage subclass instead.
     fn: Any = None