- Make bottom player empty state a clickable button that plays first available song
- Guard togglePlay to show toast when audioUrl is missing instead of silently failing
- playNext/playPrevious now skip songs without audioUrl or still generating
- repeatMode 'none' stops at queue boundaries instead of wrapping
- Add ShareModal to mobile fullscreen player (was missing, share silently failed)
- Add spacebar play/pause keyboard shortcut (skips when typing in inputs)
- Add onPlayFirst prop to Player component
- Add selectSongToPlay i18n key (en, zh, ja, ko)
Phase 4: i18n all 15 components from PR #19. Sidebar gains collapse/expand
toggle. Player gets playback speed selector (0.25x-2.0x) fixing bug B1
(hardcoded Chinese '正常'). SongList adds inline title editing and model
version badge. Delete actions now use ConfirmDialog instead of
window.confirm. Volume persisted to localStorage. Training nav item
deferred to Phase 7.
- Player: Show minimal placeholder when no song is playing instead of hiding
- RightSidebar: Add play button overlay on cover art thumbnail
- Hover to reveal play/pause button
- Click anywhere on cover to play
- Shows pause icon when song is currently playing
- SettingsModal: Add GitHub repo link for issues and feature requests