audio: mobile — tapping a track automatically opens the now-playing sheet (Spotify style)
On mobile (CSS breakpoint <=719.98px) setQueue after a user-initiated track tap
from an album/playlist now automatically opens the full sheet instead of only
showing the mini strip. Only in setQueue (not next/prev or pre-seed), so a
deliberately closed sheet does not come back. Desktop unchanged.
Cache buster audio-player.js ?v=6 -> ?v=7 (Cloudflare 1y cache).
Co-Authored-By: Claude <noreply@…>