Add automatic script reload support

Features:
- Listen for scripts_changed WebSocket messages
- Automatically reload integration when scripts change
- New on_scripts_changed callback in WebSocket client
- Seamless button entity updates without manual reload

Technical changes:
- Enhanced MediaServerWebSocket with scripts_changed handler
- Updated MediaPlayerCoordinator to trigger integration reload
- Pass config entry to coordinator for reload capability

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

custom_components/remote_media_player/media_player.py

@@ -82,6 +82,7 @@ async def async_setup_entry(
         port=entry.data[CONF_PORT],
         token=entry.data[CONF_TOKEN],
         use_websocket=use_websocket,
+        entry=entry,
     )
 
     # Set up WebSocket connection if enabled
@@ -118,6 +119,7 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
         port: int,
         token: str,
         use_websocket: bool = True,
+        entry: ConfigEntry | None = None,
     ) -> None:
         """Initialize the coordinator.
 
@@ -129,6 +131,7 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
             port: Server port
             token: API token
             use_websocket: Whether to use WebSocket for updates
+            entry: Config entry (for integration reload on scripts change)
         """
         super().__init__(
             hass,
@@ -141,6 +144,7 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
         self._port = port
         self._token = token
         self._use_websocket = use_websocket
+        self._entry = entry
         self._ws_client: MediaServerWebSocket | None = None
         self._ws_connected = False
         self._reconnect_task: asyncio.Task | None = None
@@ -162,6 +166,7 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
             token=self._token,
             on_status_update=self._handle_ws_status_update,
             on_disconnect=self._handle_ws_disconnect,
+            on_scripts_changed=self._handle_ws_scripts_changed,
         )
 
         if await self._ws_client.connect():
@@ -192,6 +197,17 @@ class MediaPlayerCoordinator(DataUpdateCoordinator[dict[str, Any]]):
         # Schedule reconnect attempt
         self._schedule_reconnect()
 
+    @callback
+    def _handle_ws_scripts_changed(self) -> None:
+        """Handle scripts changed notification from WebSocket."""
+        if self._entry:
+            _LOGGER.info("Scripts changed, reloading integration")
+            self.hass.async_create_task(
+                self.hass.config_entries.async_reload(self._entry.entry_id)
+            )
+        else:
+            _LOGGER.warning("Cannot reload integration: entry not available")
+
     def _schedule_reconnect(self) -> None:
         """Schedule a WebSocket reconnection attempt."""
         if self._reconnect_task and not self._reconnect_task.done():