- Downloads queue (2 parallel, Wi-Fi only by default) stores files under
the app's document directory and track metadata in SQLite; Collection
gets a Downloads tab, album and player screens get download buttons.
- Player plays downloaded files and local covers; My Wave falls back to
a shuffle of downloaded tracks when the server is unreachable.
- Playback events that fail on the network are kept in SQLite and sent
when the connection returns.
- AuthSession can open offline with the cached user and fetches an
access token before the first request once online.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>