show classname instead of teacher name in teacher timetable view

lib/widget_data/widget_data_mapper.dart

@@ -10,6 +10,7 @@ import '../api/marianumconnect/queries/timetable_get_week/timetable_get_week_res
 import '../api/mhsl/custom_timetable_event/custom_timetable_event.dart';
 import '../api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.dart';
 import '../extensions/date_time.dart';
+import '../view/pages/timetable/data/lesson_labels.dart';
 import '../view/pages/timetable/data/lesson_merger.dart';
 import '../view/pages/timetable/data/lesson_period_schedule.dart';
 import '../view/pages/timetable/data/lesson_status.dart';
@@ -58,6 +59,7 @@ class WidgetDataMapper {
     TimetableGetTimegridResponse? timegrid,
     GetCustomTimetableEventResponse? customEvents,
     bool connectDoubleLessons = true,
+    bool showClassInsteadOfTeacher = false,
   }) {
     final anchor = resolveDayAnchor(now);
     final holiday = _findHoliday(anchor, holidays);
@@ -68,7 +70,13 @@ class WidgetDataMapper {
         ? LessonMerger.merge(dayLessons)
         : dayLessons;
     final mapped = <WidgetLesson>[
-      ...source.map((l) => _mapLesson(l, now, subjects, rooms)),
+      ..._mapAll(
+        source,
+        now,
+        subjects,
+        rooms,
+        showClassInsteadOfTeacher: showClassInsteadOfTeacher,
+      ),
       ..._expandCustomEvents(customEvents, dayStart, dayEnd),
     ]..sort((a, b) => a.start.compareTo(b.start));
     return WidgetTimetableData(
@@ -90,6 +98,7 @@ class WidgetDataMapper {
     TimetableGetTimegridResponse? timegrid,
     GetCustomTimetableEventResponse? customEvents,
     bool connectDoubleLessons = true,
+    bool showClassInsteadOfTeacher = false,
   }) {
     final anchor = resolveWeekAnchor(now);
     // The window is anchored at the *current* calendar week, not the
@@ -107,7 +116,13 @@ class WidgetDataMapper {
         ? _mergePerDay(weekLessons)
         : weekLessons;
     final mapped = <WidgetLesson>[
-      ...source.map((l) => _mapLesson(l, now, subjects, rooms)),
+      ..._mapAll(
+        source,
+        now,
+        subjects,
+        rooms,
+        showClassInsteadOfTeacher: showClassInsteadOfTeacher,
+      ),
       ..._expandCustomEvents(customEvents, windowStart, endExclusive),
     ]..sort((a, b) => a.start.compareTo(b.start));
     final days = [
@@ -282,12 +297,29 @@ class WidgetDataMapper {
     return [for (final group in byDay.values) ...LessonMerger.merge(group)];
   }
 
+  static Iterable<WidgetLesson> _mapAll(
+    Iterable<McTimetableEntry> source,
+    DateTime now,
+    TimetableGetSubjectsResponse? subjects,
+    TimetableGetRoomsResponse? rooms, {
+    required bool showClassInsteadOfTeacher,
+  }) => source.map(
+    (l) => _mapLesson(
+      l,
+      now,
+      subjects,
+      rooms,
+      showClassInsteadOfTeacher: showClassInsteadOfTeacher,
+    ),
+  );
+
   static WidgetLesson _mapLesson(
     McTimetableEntry lesson,
     DateTime now,
     TimetableGetSubjectsResponse? subjects,
-    TimetableGetRoomsResponse? rooms,
-  ) {
+    TimetableGetRoomsResponse? rooms, {
+    bool showClassInsteadOfTeacher = false,
+  }) {
     final start = lesson.startDateTime;
     final end = lesson.endDateTime;
     final status = _mapStatus(
@@ -314,8 +346,14 @@ class WidgetDataMapper {
           roomName;
     }
     final teacher = lesson.teachers.firstOrNull;
-    final teacherName = teacher?.shortName;
-    final originalTeacher = teacher?.originalShortName;
+    // Lehrerpläne: Klasse in den Teacher-Slot mappen, damit die nativen
+    // Renderer unverändert bleiben. Klassenlose Einträge (Aufsichten) behalten
+    // den Lehrer als Fallback.
+    final classLabel = showClassInsteadOfTeacher ? lesson.classLabel : null;
+    final teacherName = classLabel ?? teacher?.shortName;
+    final originalTeacher = classLabel != null
+        ? null
+        : teacher?.originalShortName;
     return WidgetLesson(
       start: start,
       end: end,