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.
- Add I18nContext provider with useI18n hook and localStorage persistence
- Add translations.ts with complete strings for English, Chinese, Japanese, Korean
- Wrap App in I18nProvider, replace hardcoded toast messages with t() calls
- Add language selector to SettingsModal with Globe icon
- Add localization credits in About section
- Default language: English
- Add I18N_USAGE.md documentation
- Add lmModel parameter through full chain (types, API, routes, service)
- Add LM Model dropdown in Advanced Settings (defaults to 0.6B)
- Pass lmModel and lmBackend to format/enhance endpoint
- Update format_sample.py to accept --lm-model and --lm-backend args
- Auto-download model from HuggingFace if not present locally
- Persist model selection in localStorage
- Improve format route error logging with exit code and stdout/stderr
Fixes#9
- Added handleDeleteSong function in App.tsx to delete songs
- Shows confirmation dialog before deleting
- Calls backend API to delete song from database and filesystem
- Updates UI state: removes from songs list, liked songs, play queue
- Handles edge cases: stops playback if deleted song is currently playing
- Clears selection if deleted song is currently selected
- Passes onDelete handler to SongList, RightSidebar, and Player components
- Shows success/error toast notifications
Fixes#8
- 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