Since the offline-download button was added, four buttons shared one row while Play
and Shuffle also carried text labels — the labels got squeezed out and the buttons
looked compressed. All four are now equal-width and icon-only (play, shuffle, edit,
download); Play stays filled as the primary action, the rest tint accent when
active/done. Icons carry contentDescriptions for accessibility.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>