fix(voice): preserve pending message intent across reconnects

talkingq-url/services/device_target_cache.py

@@ -62,7 +62,6 @@ class DeviceTargetCache:
             self.targets[device_id] = VoiceTarget(
                 kind=kind, target_device_id=target_device_id, uuid=uuid,
                 audio_cache_key=f"voice:{device_id}:{uuid4().hex}",
-                websocket=await connection_manager.get_connection(device_id),
                 expires_at=self.clock() + self.timeout_seconds,
             )
             session_logger.info(device_id, "target", f"留言目标已设置: kind={kind}, timeout={self.timeout_seconds}s")
@@ -94,17 +93,15 @@ class DeviceTargetCache:
             return target
 
     async def bind_connection(self, device_id, websocket):
-        """Adopt commands received before connect; discard older socket intents."""
+        """Keep pending commands; discard recordings owned by another socket."""
         async with self.lock:
             if await connection_manager.get_connection(device_id) is not websocket:
                 return
             target = await self._get_locked(device_id)
             if target is None:
                 return
-            if target.websocket is not None and target.websocket is not websocket:
+            if target.session_id is not None and target.websocket is not websocket:
                 await self._remove_locked(device_id, target, "connection_changed")
-            else:
-                target.websocket = websocket
 
     async def append_audio(self, device_id, target, websocket, session_id, audio):
         async with self.lock: