fix(subtitles): extract embedded subtitle tracks from network-mounted media

The network-mount skip made SMB/NFS libraries fall back to live mpv text for
any release shipping subtitles only inside the container, losing karaoke
reconstruction, sidebar cues, and mining. The starvation it guarded against
had a different cause, and measured extraction runs at wire speed (~10s/GB
on gigabit) once per episode. Skip extraction only for true remote URLs,
which have no on-disk container to demux, and raise the extraction timeout
to cover large Bluray remuxes read over the network.

src/main.ts

@@ -2059,7 +2059,6 @@ const cachedInternalSubtitleTrackExtractor = createCachedInternalSubtitleTrackEx
 const detectRemoteMediaPath = createRemoteMediaPathDetector();
 const resolveActiveSubtitleSidebarSourceHandler = createResolveActiveSubtitleSidebarSourceHandler({
   getFfmpegPath: () => configService.getConfig().subsync.ffmpeg_path.trim() || 'ffmpeg',
-  isRemoteMediaPath: detectRemoteMediaPath,
   extractInternalSubtitleTrack: (ffmpegPath, videoPath, track) =>
     cachedInternalSubtitleTrackExtractor.extract(ffmpegPath, videoPath, track),
   logDebug: (message) => logger.debug(message),