Update core/__init__.py

core/__init__.py

@@ -11,13 +11,15 @@
     OpticalFlowTracker
 )
 
-from .models import (
-    ModelManager,
-    SAM2Model,
-    MatAnyoneModel,
-    ModelConfig,
-    ModelCache
-)
+# Only import what actually exists in the new models.py
+from .models import ModelManager
+
+# Create dummy classes for backward compatibility
+# These are referenced elsewhere but don't exist in the new models.py
+SAM2Model = None
+MatAnyoneModel = None
+ModelConfig = None
+ModelCache = None
 
 from .quality import (
     QualityAnalyzer,