feat: 清理 control_node + 引入 task 一等公民

- control_node 标注 DEPRECATED：保留目录壳子供未来远程探针节点复用，删除调用路径与相关测试
- 新增 task 表：极简元数据持久化 regulatory_node 完成的短任务（出报告/写文件/查询整理）
- regulatory_node 自标注：MessageResponse 扩展 task_action/title/summary，_run 末尾非阻塞落库
- query_task_list 改查 task 表，符合用户对"任务列表"的直觉，与 workflow 体系解耦
- 新增 /api/v1/task/list|/{id} 只读 API（task 由 regulatory 内部触发，不开放对外创建）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

kilostar/core/individual/regulatory_node/regulatory_node.py

@@ -212,7 +212,42 @@ class RegulatoryNode:
             response: MessageResponse = agent_response.output
             response.platform = platform
             response.platform_id = payload.platform_id
+            await self._maybe_persist_task(payload, response)
             return response
         except Exception as e:
             self.logger.exception(f"RegulatoryNode._run failed: {e}")
-            return None
+            return None
+
+    async def _maybe_persist_task(
+        self, payload: MessageRequest, response: MessageResponse
+    ) -> None:
+        """LLM 自标注 task_action=create_task 时落一条 task 记录。
+
+        失败不抛错——task 表是辅助元数据，不能拖垮主回复链路。
+        """
+        if response.task_action != "create_task":
+            return
+        if not response.task_title or not response.task_summary:
+            self.logger.warning(
+                "task_action=create_task 但 title/summary 为空，跳过落库"
+            )
+            return
+        try:
+            import uuid
+            from kilostar.utils.ray_hook import ray_actor_hook
+
+            postgres_database = ray_actor_hook("postgres_database").postgres_database
+            task_id = uuid.uuid4().hex
+            chat_id = payload.platform_id if payload.platform == "client" else None
+            await postgres_database.create_task.remote(
+                task_id=task_id,
+                user_id=payload.user_name,
+                command=payload.message,
+                title=response.task_title,
+                chat_id=chat_id,
+                status="completed",
+                result_summary=response.task_summary,
+                artifact_refs=None,
+            )
+        except Exception as e:
+            self.logger.warning(f"persist task failed (non-fatal): {e}")

kilostar/core/individual/regulatory_node/template.py

@@ -62,3 +62,15 @@ class MessageResponse(RegulatoryNodeResponse):
     platform: Optional[Literal["client", "onebot"]] = Field(description="系统自动填入的platform")
     platform_id: Optional[str] = Field(description="系统自动填入的platform_id")
     reply_message: str = Field(...,description="模型回复的消息")
+    task_action: Optional[Literal["create_task"]] = Field(
+        default=None,
+        description="本次回复是否完成了一个值得记录的短任务。生成文件/出报告/查询整理等填 'create_task'，闲聊或简单问答留空。",
+    )
+    task_title: Optional[str] = Field(
+        default=None,
+        description="task 的简短标题（task_action=create_task 时必填，<=80 字）",
+    )
+    task_summary: Optional[str] = Field(
+        default=None,
+        description="task 的结果摘要（task_action=create_task 时必填，描述产出与去向）",
+    )