correção de bugs, creação propria para turmas, e preparação para criar quizzes

lib/features/settings/presentation/providers/settings_provider.dart

@@ -32,10 +32,12 @@ class SettingsNotifier extends StateNotifier<SettingsState> {
   SettingsNotifier()
     : super(
         SettingsState(
-          themeMode: ThemeService.getThemeMode(),
+          themeMode: ThemeMode.light,
           isDarkModeAvailable: ThemeService.isDarkModeAvailable(),
         ),
-      );
+      ) {
+    loadSettings();
+  }
 
   /// Set theme mode
   Future<void> setThemeMode(ThemeMode themeMode) async {
@@ -60,10 +62,8 @@ class SettingsNotifier extends StateNotifier<SettingsState> {
   Future<void> resetSettings() async {
     state = state.copyWith(isLoading: true);
     await ThemeService.resetTheme();
-    state = state.copyWith(
-      themeMode: ThemeService.getThemeMode(),
-      isLoading: false,
-    );
+    final themeMode = await ThemeService.getStoredThemeMode();
+    state = state.copyWith(themeMode: themeMode, isLoading: false);
   }
 }