Update app.py

app.py

@@ -275,6 +275,8 @@ async def face_swap_api(
         if user_id == "":
             user_id = None
 
+        logger.info(f"[FaceSwap] Incoming request → target_category_id={target_category_id}, new_category_id={new_category_id}, user_id={user_id}")
+
         if target_category_id and new_category_id:
             raise HTTPException(400, "Provide only one of new_category_id or target_category_id.")