fix(agent): 在passthrough模式下添加direct参数以绕过超时检查

当启用passthrough模式时，通过direct参数跳过60秒超时检查，确保消息直接发送而不受限制

agent/manager.py

@@ -91,7 +91,7 @@ class SessionManager:
             )
             return session
 
-    async def send(self, conv_id: str, message: str, user_id: Optional[str] = None) -> str:
+    async def send(self, conv_id: str, message: str, user_id: Optional[str] = None, direct: bool = False) -> str:
         async with self._lock:
             session = self._sessions.get(conv_id)
             if session is None:
@@ -108,7 +108,7 @@ class SessionManager:
                 session.started = True
                 self._save()
 
-        if cc_timeout > 60:
+        if not direct and cc_timeout > 60:
             from agent.task_runner import task_runner
             from orchestrator.tools import get_current_chat, set_current_chat, set_current_user