diff --git a/src/daemon/dispatcher.py b/src/daemon/dispatcher.py
index 7a131df..df2d702 100644
--- a/src/daemon/dispatcher.py
+++ b/src/daemon/dispatcher.py
@@ -512,10 +512,9 @@ class Dispatcher:
 
                 session_id = await self.spawner.spawn_full_agent(
                     agent_id=agent_id, message=message,
-                    new_session=decision.get("new_session", False),
                     task_id=task.id,
                     on_complete=on_complete_legacy,
-                    use_main_session=is_mail_legacy,
+                    use_main_session=True,  # #02: 统一投递到 main session
                     task_db_path=Path(project_config["db_path"]) if project_config and "db_path" in project_config else None,
                 )
                 return {"level": level.value, "agent_id": agent_id,