Three small data-layer additions for the upcoming track-actions menu:
- PlaylistsApi.appendTracks(playlistId, trackIds) wraps
POST /api/playlists/{id}/tracks for the "Add to playlist" action.
- audio_handler gains playNext (insertAudioSource at currentIndex+1)
and enqueue (addAudioSource) — both also push the audio_service
queue notifier so the queue-screen UI stays in sync.
- The AudioSource construction was extracted into a private
_buildAudioSource helper so setQueueFromTracks / playNext / enqueue
share one source-building path.
- PlayerActions exposes playNext / enqueue for menu use.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
2499449c0b