Removes LRCLIB lookup, .lrc sidecar file writing, and lyrics/uslt
metadata embedding from all downloads.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
navidromeArtist() now writes ; instead of / so Navidrome splits
correctly with the updated Tags.Artist.Split config.
Also handles & (e.g. "Artist A & Artist B" → "Artist A;Artist B").
Add fix-artist-separators.sh — one-time Debian script to update
existing library files from " / " to ";" in artist tags.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>