feat: select school terms and smooth refractive Dock motion

mobile/test/widgets/startup_test.dart

@@ -7,6 +7,7 @@ import 'package:hepan_everyday/app/hepan_app.dart';
 import 'package:hepan_everyday/domain/app_snapshot.dart';
 import 'package:hepan_everyday/domain/app_settings.dart';
 import 'package:hepan_everyday/domain/semester.dart';
+import 'package:hepan_everyday/widgets/glass_dock.dart';
 
 import '../support/fakes.dart';
 import '../domain/schedule_engine_test.dart' show course;
@@ -38,7 +39,13 @@ void main() {
         buildApplication(controller, notificationSelection: selection),
       );
       await tester.pumpAndSettle();
-      expect(find.bySemanticsLabel('课表'), findsOneWidget);
+      expect(
+        find.descendant(
+          of: find.byType(GlassDock),
+          matching: find.bySemanticsLabel('课表'),
+        ),
+        findsOneWidget,
+      );
       expect(find.bySemanticsLabel('个人设置'), findsOneWidget);
       await tester.tap(find.bySemanticsLabel('个人设置'));
       await tester.pumpAndSettle();