AFGeofence Boot Receiver
Re-registers persisted geofences and the location-sharing background trigger after device reboot or app update.
Google Play Services clears all registered geofences and all PendingIntent location requests on reboot and app update. This receiver reads the geofence list from AFGeofenceStore and re-registers it with Google Play Services so transitions continue to fire, then re-asserts the background location-sharing trigger when the host opted in through AFCoreConfig.Builder.locationSharingEnabled.