Adds a permanent, non-consumable premium unlock (EstadoEntitlement +
PuertoCompras/ServicioComprasPlayBilling) that removes ads and unlocks
alarm vacations, alarms past a 5-alarm free cap, recording start, and
full Android Auto browsing. The phone equalizer stays free for everyone.
- Entitlement is prefs-backed (compra_premium_v1), fail-open, and
resolvable headlessly via esPremiumPersistido() for the Android Auto
audio handler, which registers before runApp.
- Android Auto reduced mode keeps the real root folder labels for free
users; browsing into any of them (and playFromMediaId/playFromSearch/
skipToNext/skipToPrevious) is blocked at the getChildren/servicio_audio
choke points, with a locked "Función Premium" item as the backstop.
Current-station play/pause/stop stays untouched. A free -> premium
transition actively invalidates the head unit's cached browse tree.
- Ads (top banner + capped interstitial before adding a station or an
alarm) are gated behind entitlement via ServicioAnuncios, using
official Google test ad unit IDs pending AdMob provisioning.
- Alarm cap UX shows an explanatory message with a secondary unlock
action rather than a bare paywall jump; existing data is grandfathered.
- 4 new localization keys translated across all 13 supported locales.
Co-located tests use strict TDD (RED test before implementation) for
every new pure-logic unit; full existing suite passes unchanged.