added guardian login with views for their assigned childs

lib/state/app/modules/timetable/data_provider/timetable_data_provider.dart

@@ -4,6 +4,8 @@ import '../../../../../api/marianumconnect/queries/timetable_custom_events/timet
 import '../../../../../api/marianumconnect/queries/timetable_custom_events/timetable_custom_events_cache.dart';
 import '../../../../../api/marianumconnect/queries/timetable_custom_events/timetable_custom_events_remove.dart';
 import '../../../../../api/marianumconnect/queries/timetable_custom_events/timetable_custom_events_update.dart';
+import '../../../../../api/marianumconnect/queries/timetable_get_child_week/timetable_get_child_week.dart';
+import '../../../../../api/marianumconnect/queries/timetable_get_element_week/timetable_get_element_week.dart';
 import '../../../../../api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays.dart';
 import '../../../../../api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.dart';
 import '../../../../../api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms.dart';
@@ -21,19 +23,43 @@ import '../../../../../api/marianumconnect/queries/timetable_subject_colors/time
 import '../../../../../api/mhsl/custom_timetable_event/custom_timetable_event.dart';
 import '../../../../../api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.dart';
 import '../../../../../api/request_cache.dart';
+import '../subject/timetable_subject.dart';
 
 /// Pulls the timetable from the Marianum-Connect mobile API. Each endpoint is
 /// its own HTTP call; this provider exposes the lazy futures so the bloc can
-/// chain them without seeing the dio layer.
+/// chain them without seeing the dio layer. Only the week depends on the
+/// [TimetableSubject]; the reference data is school-wide.
 class TimetableDataProvider {
+  /// The endpoint serving [subject]'s week. Shared with the widget background
+  /// isolate, which has no bloc.
+  static Future<TimetableGetWeekResponse> fetchWeek(
+    TimetableSubject subject, {
+    required DateTime from,
+    required DateTime until,
+  }) => switch (subject) {
+    OwnTimetable() => TimetableGetWeek().run(from: from, until: until),
+    ElementTimetable(:final element) => TimetableGetElementWeek().run(
+      type: element.type,
+      id: element.id,
+      from: from,
+      until: until,
+    ),
+    ChildTimetable(:final childId) => TimetableGetChildWeek().run(
+      childId: childId,
+      from: from,
+      until: until,
+    ),
+    NoTimetable() => throw StateError('No timetable subject'),
+  };
+
   Future<TimetableGetWeekResponse> getWeek(
+    TimetableSubject subject,
     DateTime startDate,
     DateTime endDate, {
     void Function(Object)? onError,
-    bool renew = false,
   }) async {
     try {
-      return await TimetableGetWeek().run(from: startDate, until: endDate);
+      return await fetchWeek(subject, from: startDate, until: endDate);
     } catch (e) {
       onError?.call(e);
       rethrow;