nmemmertandClaude Sonnet 4.6
7efb9265e6
Each playlist now has its own station checkboxes in Settings.
Sync scrapes the union of all stations once, then filters songs
by source before syncing each playlist separately.
Config stored as PLAYLISTS JSON: [{name, stations}, ...].
Backward-compatible with flat PLAYLIST_NAME + SELECTED_STATIONS.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>