show classname instead of teacher name in teacher timetable view

lib/widget_data/widget_sync.dart

@@ -31,6 +31,9 @@ class WidgetSync {
   static const String connectDoubleLessonsKey =
       'widget_setting_connect_double_lessons_v1';
   static const String themeModeKey = 'widget_setting_theme_mode_v1';
+  // Mirrored from CapabilitiesCubit so the background isolate can render
+  // teacher plans (class instead of teacher name) without bloc storage.
+  static const String isTeacherKey = 'widget_setting_is_teacher_v1';
   // Mirrored so the background isolate hits the same Marianum-Connect base
   // URL the in-app settings cubit currently has selected.
   static const String marianumConnectBaseUrlKey = 'widget_setting_mc_base_url_v1';
@@ -58,25 +61,30 @@ class WidgetSync {
     );
   }
 
-  static Future<void> setLoggedIn(bool loggedIn) async {
-    await ensureInitialized();
-    await HomeWidget.saveWidgetData<bool>(loggedInKey, loggedIn);
-  }
+  static Future<void> setLoggedIn(bool loggedIn) =>
+      _setBool(loggedInKey, loggedIn);
 
-  static Future<void> setConnectDoubleLessons(bool value) async {
-    await ensureInitialized();
-    await HomeWidget.saveWidgetData<bool>(connectDoubleLessonsKey, value);
-  }
+  static Future<void> setConnectDoubleLessons(bool value) =>
+      _setBool(connectDoubleLessonsKey, value);
 
   /// Default `true` matches `default_settings.dart` — fresh install behaves
   /// like the in-app calendar.
-  static Future<bool> getConnectDoubleLessons() async {
+  static Future<bool> getConnectDoubleLessons() =>
+      _getBool(connectDoubleLessonsKey, defaultValue: true);
+
+  static Future<void> setIsTeacher(bool value) => _setBool(isTeacherKey, value);
+
+  static Future<bool> getIsTeacher() =>
+      _getBool(isTeacherKey, defaultValue: false);
+
+  static Future<void> _setBool(String key, bool value) async {
     await ensureInitialized();
-    final value = await HomeWidget.getWidgetData<bool>(
-      connectDoubleLessonsKey,
-      defaultValue: true,
-    );
-    return value ?? true;
+    await HomeWidget.saveWidgetData<bool>(key, value);
+  }
+
+  static Future<bool> _getBool(String key, {required bool defaultValue}) async {
+    await ensureInitialized();
+    return await HomeWidget.getWidgetData<bool>(key) ?? defaultValue;
   }
 
   static Future<void> setThemeMode(String mode) async {