- Add NanumGothic.ttf and NanumGothic SDF.asset for Korean text support
- SongSelectManager: cardFont SerializeField for card title/artist rendering
- SongDetailPanel: difficulty selected color changed from blue to green
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add DownloadManager, SongLibrary, SongSelectManager, SongDetailPanel scripts
- Rebuild SongSelect panel inside Menu.unity using VRBeatsKit style:
left scroll list (ALL/OWNED tabs) + right detail panel (diff buttons, Download/Delete/Play)
- SceneBuilder replaced: only ③ Menu — Rebuild SongSelect Panel remains
- All UI text in English
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
whdwo798