JellyTauPlayer.kt references com.dtourolle.jellytau.VideoOverlayManager,
but the file existed only in the gitignored gen/android dir, so it
survived locally but vanished in CI (which regenerates gen/android via
'tauri android init'). sync-android-sources.sh copies top-level *.kt
from src-tauri/android, so adding it there gets it synced into the build.
Fixes: 'Unresolved reference: VideoOverlayManager' in
:app:compileUniversalReleaseKotlin.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>