diff --git a/src/daemon/ticker.py b/src/daemon/ticker.py
index 043612e..622ccba 100644
--- a/src/daemon/ticker.py
+++ b/src/daemon/ticker.py
@@ -1037,9 +1037,9 @@ Parent Task ID: {parent_task.id}
                 session_id = await self.spawner.spawn_full_agent(
                     agent_id=agent_id,
                     message=prompt,
-                    # v2.7.2: on_complete 不含 counter.release，由 wrapped_on_complete 保证
                     task_id=broadcastable[0].id if broadcastable else None,
                     task_db_path=db_path,
+                    use_main_session=True,  # #02: 投递到 main session
                 )
                 spawned.append(agent_id)
                 logger.info("Broadcast spawned %s (session=%s)", agent_id, session_id)