didChangeAppLifecycleState method

@override void didChangeAppLifecycleState(AppLifecycleState state)

Refresh inbox when app returns to foreground. This is the reliable fallback for when silent push doesn't work (battery optimization, iOS background limits, Firebase not configured, etc.)

Implementation

@override
void didChangeAppLifecycleState(AppLifecycleState state) {
  if (state == AppLifecycleState.resumed && _initialized) {
    debugPrint('InboxService: app resumed, refreshing inbox if stale');
    // Use refreshIfStale so brief app switches don't trigger unnecessary
    // network requests. A full refresh() still happens when the cache
    // has expired, covering the case where silent push didn't arrive.
    refreshIfStale();
  }
}