external_player.cpp now asks plex_web, spotify_device and youtube_music what is playing, so
dingosdk_external_player_probe (multiplayer tests, Windows) failed to link with 10 unresolved
externals. Linking those players would bring in the overlay, the log and HTTPS, so the probe gets
stubs that report them switched off and keeps reading only the Windows media session.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>