feat: deliver RSchedule service login exams and elastic glass navigation

mobile/lib/domain/app_snapshot.dart

@@ -1,6 +1,7 @@
 import 'app_settings.dart';
 import 'course.dart';
 import 'semester.dart';
+import 'exam_schedule.dart';
 
 class ImportMetadata {
   const ImportMetadata({
@@ -18,6 +19,7 @@ class AppSnapshot {
     this.settings = const AppSettings(),
     List<Course> courses = const [],
     this.importMetadata,
+    this.examSchedule,
     this.calendarCleanupPending = false,
     Map<String, String> calendarEventIds = const {},
   }) : courses = List.unmodifiable(courses),
@@ -25,6 +27,7 @@ class AppSnapshot {
   final AppSettings settings;
   final List<Course> courses;
   final ImportMetadata? importMetadata;
+  final ExamSchedule? examSchedule;
   final Map<String, String> calendarEventIds;
   final bool calendarCleanupPending;
   AppSnapshot copyWith({
@@ -33,6 +36,8 @@ class AppSnapshot {
     ImportMetadata? importMetadata,
     Map<String, String>? calendarEventIds,
     bool clearMetadata = false,
+    ExamSchedule? examSchedule,
+    bool clearExams = false,
     bool? calendarCleanupPending,
   }) => AppSnapshot(
     settings: settings ?? this.settings,
@@ -40,12 +45,14 @@ class AppSnapshot {
     importMetadata: clearMetadata
         ? null
         : importMetadata ?? this.importMetadata,
+    examSchedule: clearExams ? null : examSchedule ?? this.examSchedule,
     calendarEventIds: calendarEventIds ?? this.calendarEventIds,
     calendarCleanupPending:
         calendarCleanupPending ?? this.calendarCleanupPending,
   );
   Map<String, dynamic> toJson() => {
     'schemaVersion': 1,
+    'examSchedule': examSchedule?.toJson(),
     'courses': courses.map((c) => c.toJson()).toList(),
     'settings': {
       'semester': settings.semester == null
@@ -109,6 +116,11 @@ class AppSnapshot {
             );
       final metadata = json['importMetadata'];
       return AppSnapshot(
+        examSchedule: json['examSchedule'] == null
+            ? null
+            : ExamSchedule.fromJson(
+                Map<String, dynamic>.from(json['examSchedule'] as Map),
+              ),
         calendarCleanupPending:
             (json['calendarCleanupPending'] ?? false) as bool,
         courses: values,