implemented foreign timetable support for students, teachers, rooms, and classes, including a searchable element picker with favorites support, introduced a capabilities system for feature gating, refactored the timetable UI into a reusable TimetableCalendarView component, and redesigned the chat input field with a unified emoji picker and integrated attachment actions.

lib/api/marianumconnect/queries/timetable_get_element_week/timetable_element_type.dart

@@ -0,0 +1,43 @@
+/// A concrete, selectable timetable element: its type, WebUntis element id and
+/// a human-readable label (room short name, abbreviated student name, …). Used
+/// to hand a picker selection back to the timetable view and to drive the
+/// inline foreign-plan rendering.
+typedef TimetableElementRef = ({TimetableElementType type, int id, String label});
+
+/// The four kinds of timetable elements whose schedule can be requested via
+/// `timetable/{type}/{id}`. `schoolClass` is named to avoid the reserved Dart
+/// keyword `class`; its [pathSegment] maps back to the backend's `class`.
+enum TimetableElementType {
+  student,
+  teacher,
+  room,
+  schoolClass;
+
+  /// Path segment used in the backend timetable endpoint URL.
+  String get pathSegment {
+    switch (this) {
+      case TimetableElementType.student:
+        return 'student';
+      case TimetableElementType.teacher:
+        return 'teacher';
+      case TimetableElementType.room:
+        return 'room';
+      case TimetableElementType.schoolClass:
+        return 'class';
+    }
+  }
+
+  /// Singular German label for the UI (picker segments, hints).
+  String get label {
+    switch (this) {
+      case TimetableElementType.student:
+        return 'Schüler';
+      case TimetableElementType.teacher:
+        return 'Lehrer';
+      case TimetableElementType.room:
+        return 'Raum';
+      case TimetableElementType.schoolClass:
+        return 'Klasse';
+    }
+  }
+}

lib/api/marianumconnect/queries/timetable_get_element_week/timetable_get_element_week.dart

@@ -0,0 +1,36 @@
+import 'package:dio/dio.dart';
+
+import '../../errors/marianumconnect_error.dart';
+import '../../marianumconnect_api.dart';
+import '../../marianumconnect_endpoint.dart';
+import '../timetable_get_week/timetable_get_week_response.dart';
+import 'timetable_element_type.dart';
+
+/// Fetches a foreign element's weekly timetable from
+/// `timetable/{student|teacher|room|class}/{id}`. The response shape is
+/// identical to `timetable/me`, so [TimetableGetWeekResponse] is reused.
+class TimetableGetElementWeek {
+  final Dio _dio;
+
+  TimetableGetElementWeek({Dio? dio}) : _dio = dio ?? MarianumConnectApi.dio();
+
+  Future<TimetableGetWeekResponse> run({
+    required TimetableElementType type,
+    required int id,
+    required DateTime from,
+    required DateTime until,
+  }) async {
+    try {
+      final response = await _dio.get<Map<String, dynamic>>(
+        MarianumConnectEndpoint.resolve('timetable/${type.pathSegment}/$id'),
+        queryParameters: {'from': _format(from), 'until': _format(until)},
+      );
+      return TimetableGetWeekResponse.fromJson(response.data!);
+    } on DioException catch (e) {
+      throw mapMarianumConnectError(e);
+    }
+  }
+
+  String _format(DateTime d) =>
+      '${d.year.toString().padLeft(4, '0')}-${d.month.toString().padLeft(2, '0')}-${d.day.toString().padLeft(2, '0')}';
+}