- MainActivity: onListen re-emits the current active device and registers the audio device callback idempotently, so recreated activities resync instead of freezing the active-device id on a disconnected device. - servicio_dispositivo_audio: resubscribir() re-opens the event channel; estado_ecualizador exposes refrescarDispositivoActual() with an in-flight guard, invoked on app resume and when opening advanced EQ options, clearing stale green-dot device selections. - navegacion_auto/servicio_audio: new 'Personalizado' browse tree in Android Auto (5 band folders, 13 gain steps each) applied live via setBanda; preset and gain taps persist at device level when multi-device EQ is active and respect station/matrix overrides, with apply-before-persist ordering and children-changed notifications. - l10n: regenerate stale generated localizations; add rxdart as direct dependency for the subscribeToChildren override.