CarDash 1.2.1 fixes a brief Music-tile equalizer flash when Jellyfin playback is paused or stopped from the Home card.

- **Package:** `com.wasp.cardash_launcher`
- **Version:** 1.2.1 (versionCode 21)
- **ABIs:** arm64-v8a, armeabi-v7a, x86_64 (universal APK)
- **Signing:** project debug key matching all prior releases
- **SHA-256:** `8fc6de444c2811dfe8269b21a7ad7b1f927cdde6b97d4f2f9fadd7cf0ea9b97e`

**The bug**
- Pausing Jellyfin updated the Jellyfin controller immediately, but the Android
  MediaSession snapshot could still report CarDash's own session as playing for
  one system poll (~900 ms).
- The Music tile briefly took that stale snapshot as “another app is playing”
  and animated its equalizer for part of a second.

**The fix**
- The Music equalizer now only animates for an **external** system media session;
  CarDash's own Jellyfin package is excluded.
- The Home volume/playback card also ignores the stale CarDash session, so it
  stays on the paused Jellyfin queue instead of switching to the system source
  during that gap.
- No visual or behavior changes to Jellyfin playback itself.

**Verified**
- 139 tests pass, including unit coverage for the stale CarDash session and the
  external-app case.
- Android 14 emulator: play a Jellyfin album, pause from Home; the Jellyfin tile
  stops immediately, the Music tile stays quiet, and the Home card remains on the
  paused Jellyfin track.
- All 1.2.0 Jellyfin features are included: Home button, dashboard, grouped
  genres, album page, Media3/background playback, notification, audio focus and
  playback reporting.

**[Download cardash-android-1.2.1.apk](https://git.krasi.net/kkazakov/car-interface-android/raw/main/releases/cardash-android-1.2.1.apk)**

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