fix(ws): fetch status eagerly on new WebSocket connection

Instead of waiting for the next poll cycle, new clients now get the
current playback status immediately on connect by calling get_status_func
if no cached status is available yet.

media_server/services/websocket_manager.py

@@ -19,6 +19,7 @@ class ConnectionManager:
         self._active_connections: set[WebSocket] = set()
         self._lock = asyncio.Lock()
         self._last_status: dict[str, Any] | None = None
+        self._get_status_func: Callable[[], Coroutine[Any, Any, Any]] | None = None
         self._broadcast_task: asyncio.Task | None = None
         self._poll_interval: float = 0.5  # Internal poll interval for change detection
         self._position_broadcast_interval: float = 5.0  # Send position updates every 5s during playback
@@ -39,9 +40,17 @@ class ConnectionManager:
         )
 
         # Send current status immediately upon connection
-        if self._last_status:
+        status = self._last_status
+        if not status and self._get_status_func:
             try:
-                await websocket.send_json({"type": "status", "data": self._last_status})
+                result = await self._get_status_func()
+                status = result.model_dump()
+                self._last_status = status
+            except Exception as e:
+                logger.debug("Failed to fetch initial status: %s", e)
+        if status:
+            try:
+                await websocket.send_json({"type": "status", "data": status})
             except Exception as e:
                 logger.debug("Failed to send initial status: %s", e)
 
@@ -251,6 +260,7 @@ class ConnectionManager:
         if self._running:
             return
 
+        self._get_status_func = get_status_func
         self._running = True
         self._broadcast_task = asyncio.create_task(
             self._status_monitor_loop(get_status_func)