Linthra 0.1.0-alpha.9 — cumulative alpha since alpha.1.

New since the first alpha:
- Working shuffle and repeat playback controls.
- Chromecast / cast foundation.
- Smart offline cache manager with a user-configurable size limit.
- Brand & theme refresh (violet + warm orange identity, refined equalizer
  icon).
- Library alphabet fast-scroller fix (no longer overlaps track rows).
- Disk preloading for smoother playback, Jellyfin-synced favorites, and
  working lyrics.

Fixed:
- Settings/About now reports the correct version (it was stuck at alpha.1
  through earlier alpha builds).

Still an alpha — expect rough edges. Not on F-Droid yet.
