Design for adding NetEase / QQ source switcher tabs to recommend
playlists, daily songs, and user playlists on Home, plus user playlists
on Library. Tabs auto-hide when only one source is available; selection
persists per-section in localStorage.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Library.vue: use Song type from store so SongCard's strict platform
union accepts the data (was platform: string, broke after merge tightened
SongCard prop type).
database.test.ts: switch toEqual -> toMatchObject so getBotInstances()
returning extra profile_* schema columns no longer fails the assertion.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
