refresh method
Re-reads all entries from both storages and notifies listeners.
Implementation
Future<void> refresh() async {
if (!_initialized) {
await init();
return;
}
_isLoading = true;
notifyListeners();
try {
await _load();
_error = null;
} catch (e) {
_error = 'Refresh failed: $e';
} finally {
_isLoading = false;
notifyListeners();
}
}