fixed guardian login edge cases and misleading placeholders on failed loads

lib/state/app/modules/capabilities/bloc/capabilities_cubit.dart

@@ -25,8 +25,9 @@ class CapabilitiesCubit extends HydratedCubit<CapabilitiesState> {
 
   /// Refreshes capabilities from the server. On any failure (endpoint not yet
   /// live, network error, 4xx) the previously hydrated flags are kept but the
-  /// state is marked `loaded` — a failed fetch never silently grants a
-  /// capability, and an offline launch keeps whatever was cached.
+  /// state is marked `loaded` and `loadFailed` — a failed fetch never silently
+  /// grants a capability, an offline launch keeps whatever was cached, and the
+  /// UI can offer a retry instead of claiming a guardian has no children.
   Future<void> load() async {
     if (DemoMode.active) {
       emit(
@@ -51,11 +52,11 @@ class CapabilitiesCubit extends HydratedCubit<CapabilitiesState> {
       );
     } catch (e) {
       log('Failed to load capabilities: $e');
-      emit(state.copyWith(loaded: true));
+      emit(state.copyWith(loaded: true, loadFailed: true));
     }
   }
 
-  Future<void> reset() async => emit(const CapabilitiesState());
+  void reset() => emit(const CapabilitiesState());
 
   @override
   CapabilitiesState fromJson(Map<String, dynamic> json) {