syntax fix

models/__init__.py

@@ -404,6 +404,22 @@ def _try_build(cfg_path: str):
             sam = _try_build(cfg)
         except Exception:
             alt_cfg = _find_hiera_config_if_hieradet(cfg)
+            if alt_cfg:
+                sam = _try_build(alt_cfg)
+            else:
+                raise
+        
+        if sam is not None:
+            predictor = SAM2ImagePredictor(sam)
+            meta["sam2_init_ok"] = True
+            meta["sam2_device"] = device
+            return predictor, True, meta
+        else:
+            return None, False, meta
+            
+    except Exception as e:
+        logger.error(f"SAM2 loading failed: {e}")
+        return None, False, meta
 
 def run_sam2_mask(predictor: object,
                   first_frame_bgr: np.ndarray,