feat: add persisted batch text testing

backend/services/brains/prompt_brain.py

@@ -103,6 +103,8 @@ class PromptBrain(BaseBrain):
 
     async def setup(self, cfg: AssistantConfig, runtime: BrainRuntime) -> None:
         self._runtime = runtime
+        if runtime.tool_executor_factory is not None:
+            self._tools = runtime.tool_executor_factory(self._store)
         self._tools.set_client_tools(runtime.client_tools)
         self._actions = ActionRunner(
             self._tools,
@@ -651,14 +653,27 @@ class PromptBrain(BaseBrain):
         if not kind:
             raise ValueError(f"系统工具 {tool.id} 缺少有效 kind")
         if kind == "end_conversation":
-            return self._make_end_call_tool(tool, runtime)
-        if kind == "update_state":
-            return self._make_update_state_tool(tool, runtime)
-        if kind == "skip_turn":
-            return self._make_skip_turn_tool(tool)
-        if kind == "request_human_handoff":
-            return self._make_handoff_tool(tool, runtime)
-        raise ValueError(f"未知系统工具: {kind}")
+            schema, handler = self._make_end_call_tool(tool, runtime)
+        elif kind == "update_state":
+            schema, handler = self._make_update_state_tool(tool, runtime)
+        elif kind == "skip_turn":
+            schema, handler = self._make_skip_turn_tool(tool)
+        elif kind == "request_human_handoff":
+            schema, handler = self._make_handoff_tool(tool, runtime)
+        else:
+            raise ValueError(f"未知系统工具: {kind}")
+
+        if runtime.tool_executor_factory is None:
+            return schema, handler
+
+        async def mock_system_tool(params: FunctionCallParams) -> None:
+            result = await self._tools.execute(
+                tool,
+                dict(params.arguments or {}),
+            )
+            await params.result_callback(result)
+
+        return schema, mock_system_tool
 
     def _make_update_state_tool(self, tool, runtime: BrainRuntime):
         """更新已声明的动态变量(会话状态),并让模型继续当前回答。"""