Update app.py

app.py

@@ -13,7 +13,7 @@
 sys.path.append(str(Path(__file__).parent.absolute()))
 
 # Import processing modules
-from models import load_sam2_predictor, load_matanyone_processor, clear_model_cache, get_memory_usage
+from model_loaders import load_sam2_predictor, load_matanyone_processor, clear_model_cache, get_memory_usage
 from video_pipeline import stage1_create_transparent_video, stage2_composite_background
 
 # Persistent temp dir