fix: recover mpv playback after the OS resumes from sleep (#2172)

mpv/ffmpeg had no network-level timeout or reconnect options, so a
network stream left open across a system sleep would block forever on
the now-dead TCP connection instead of failing or reconnecting. Since
Node-MPV's IPC commands only resolve when mpv replies, a wedged mpv
process also made quit()/restart hang indefinitely, so the only way
out was to kill the whole app.

- Add --network-timeout and ffmpeg reconnect options to mpv's default
  parameters so a stalled stream fails fast instead of hanging.
- Make the quit() helper resilient to an unresponsive mpv process by
  racing it against a timeout and force-killing as a fallback.
- Listen for Electron's powerMonitor 'resume' event and tell the
  renderer to reload mpv, so playback recovers automatically instead
  of requiring a manual app restart.

src/renderer/features/player/audio-player/engine/mpv-player-engine.tsx

@@ -68,9 +68,13 @@ export const MpvPlayerEngine = (props: MpvPlayerEngineProps) => {
         };
 
         eventEmitter.on('MPV_RELOAD', handleMpvReload);
+        // The main process notifies us after the OS resumes from sleep, since the
+        // stream mpv had open is likely on a now-dead connection.
+        mpvPlayerListener?.rendererMpvReconnect(handleMpvReload);
 
         return () => {
             eventEmitter.off('MPV_RELOAD', handleMpvReload);
+            ipc?.removeAllListeners('renderer-mpv-reconnect');
         };
     }, []);