refactor(scheduler): 移除不必要的 schedule 锁管理代码

src/chat/message_manager/scheduler_dispatcher.py

@@ -33,9 +33,6 @@ class SchedulerDispatcher:
         # 追踪每个流的 schedule_id
         self.stream_schedules: dict[str, str] = {}  # stream_id -> schedule_id
      
-        # 用于保护 schedule 创建/删除的锁，避免竞态条件
-        self.schedule_locks: dict[str, asyncio.Lock] = {}  # stream_id -> Lock
-        
         # Chatter 管理器
         self.chatter_manager: ChatterManager | None = None
         
@@ -85,12 +82,6 @@ class SchedulerDispatcher:
         self.chatter_manager = chatter_manager
         logger.debug(f"设置 Chatter 管理器: {chatter_manager.__class__.__name__}")
 
-    def _get_schedule_lock(self, stream_id: str) -> asyncio.Lock:
-        """获取流的 schedule 锁"""
-        if stream_id not in self.schedule_locks:
-            self.schedule_locks[stream_id] = asyncio.Lock()
-        return self.schedule_locks[stream_id]
-
     async def on_message_received(self, stream_id: str) -> None:
         """消息接收时的处理逻辑
         
@@ -121,7 +112,7 @@ class SchedulerDispatcher:
                 should_interrupt = await self._check_interruption(stream_id, context)
                 
                 if should_interrupt:
-                    # 移除旧 schedule 并创建新的（内部有锁保护）
+                    # 移除旧 schedule 并创建新的
                     await self._cancel_and_recreate_schedule(stream_id, context)
                     logger.debug(f"⚡ 打断成功: 流={stream_id[:8]}..., 已重新创建 schedule")
                 else: