bug fix

requirements_generator/core_utils.py

@@ -48,12 +48,12 @@ def log_change(
     }
     changes_text = json.dumps(changes_payload, ensure_ascii=False, indent=2)
 
-    # ✅ 只传模型真实存在的字段
-    return db.add_change_history(
-        project_id=project_id,
+    history = ChangeHistory(project_id=project_id,
                             changes=changes_text,
-        status=status,
-    )
+                            status=status)
+    # ✅ 只传模型真实存在的字段
+    db.create_change_history(history)
+    return history
 
 
 def get_change_histories(project_id: int, status: str = None) -> list[dict]: