fix: face traces split at scene cuts — even same person, different cut

scripts/store_traced_faces.py

@@ -62,8 +62,17 @@ def run_face_tracker(face_json_path: str, traced_json_path: str) -> str:
             }
 
     print(f"[TRACE] Processing {len(face_data.get('frames', {}))} frames")
-
-    face_data = track_faces(face_data, use_embedding=True)
+    
+    # Load cut boundaries from cut.json (same directory as face.json)
+    cut_boundaries = None
+    cuts_path = face_json_path.replace("_traced.json", ".cut.json").replace(".face.json", ".cut.json")
+    if os.path.exists(cuts_path):
+        with open(cuts_path) as f:
+            cuts = json.load(f)
+        cut_boundaries = {s["start_frame"] for s in cuts.get("scenes", []) if s["start_frame"] > 0}
+        print(f"[TRACE] Loaded {len(cut_boundaries)} cut boundaries")
+    
+    face_data = track_faces(face_data, use_embedding=True, cut_boundaries=cut_boundaries)
     metadata = face_data.get("metadata", {})
     metadata["tracking_method"] = "iou_embedding"
     metadata["tracked_at"] = datetime.now().isoformat()