Add feedback service, reminder diagnostics and smooth week transitions

mobile/lib/features/timetable/timetable_page.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import '../../app/app_controller.dart';
 import '../../app/app_theme.dart';
 import '../../domain/schedule_engine.dart';
+import '../../widgets/directional_week_transition.dart';
 import '../profile/settings_page.dart';
 import 'week_grid.dart';
 
@@ -170,14 +171,18 @@ class _TimetablePageState extends State<TimetablePage> {
               ),
             ),
           if (term != null) ...[
-            WeekGrid(
-              events: ScheduleEngine.occurrences(
-                c.visibleCourses,
-                term,
-              ).where((e) => e.week == week).toList(),
-              monday: monday,
-              today: today,
-              settings: c.visibleSettings,
+            DirectionalWeekTransition(
+              key: ValueKey((c.isDemo, term.firstMonday, term.totalWeeks)),
+              week: week,
+              child: WeekGrid(
+                events: ScheduleEngine.occurrences(
+                  c.visibleCourses,
+                  term,
+                ).where((e) => e.week == week).toList(),
+                monday: monday,
+                today: today,
+                settings: c.visibleSettings,
+              ),
             ),
             const SizedBox(height: 12),
             Text(