M1：镜生域后端闭环——灵胚/照心试演/启镜原子闸门/执镜关系/命台租约/魂籍签名导出/死亡冷静期（迁移 001，测试 7 用例）

backend/app/services/serializers.py

@@ -187,6 +187,7 @@ def run_to_response(run: Run) -> RunResponse:
         character_id=run.character_id,
         session_id=run.session_id,
         status=run.status,
+        kind=run.kind,
         goal=run.goal,
         origin=run.origin,
         model_hint=run.model_hint,