Add Dock captions and subtle blue icon glow

mobile/test/widgets/glass_dock_test.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:hepan_everyday/widgets/glass_dock.dart';
 import 'package:hepan_everyday/app/hepan_app.dart';
+import 'package:hepan_everyday/features/timetable/timetable_page.dart';
 import 'package:timezone/data/latest.dart' as tzdata;
 
 import 'navigation_test.dart' show uiController;
@@ -16,7 +17,13 @@ void main() {
       await c.showDemo();
       await tester.pumpWidget(HepanApp(controller: c));
       await tester.pumpAndSettle();
-      expect(find.text('课表'), findsOneWidget);
+      expect(
+        find.descendant(
+          of: find.byType(TimetablePage),
+          matching: find.text('课表'),
+        ),
+        findsOneWidget,
+      );
       expect(tester.getRect(find.text('周日')).right, lessThanOrEqualTo(800));
       await tester.drag(find.text('周三'), const Offset(-250, 0));
       await tester.pumpAndSettle();
@@ -36,7 +43,7 @@ void main() {
       );
       await tester.pumpAndSettle();
       expect(find.text('示例课表'), findsOneWidget);
-      await tester.tap(find.bySemanticsLabel('个人设置'));
+      await tester.tap(find.text('我的'));
       await tester.pumpAndSettle();
       expect(find.text('登录学校账户'), findsOneWidget);
       c.dispose();

mobile/test/widgets/glass_material_test.dart

@@ -18,10 +18,11 @@ void main() {
       backdropColor: Colors.white,
       preview: true,
     );
-    final selected = _channel(resting, 46, 52, 0);
+    // Sample beside the visible label, away from icon glow and glass rims.
+    final selected = _channel(resting, 22, 52, 0);
     final base = _channel(resting, 160, 52, 0);
     expect(base - selected, greaterThan(20));
-    expect((_channel(resting, 46, 52, 2) - selected).abs(), lessThan(12));
+    expect((_channel(resting, 22, 52, 2) - selected).abs(), lessThan(12));
     final held = await _render(
       tester,
       GlassDock(selectedIndex: 0, onSelected: (_) {}),
@@ -29,7 +30,7 @@ void main() {
       held: true,
       preview: true,
     );
-    expect(_channel(held, 46, 52, 0) - selected, greaterThan(18));
+    expect(_channel(held, 22, 52, 0) - selected, greaterThan(18));
   });
   testWidgets(
     'glass softens fine background detail without whitening its colour',
@@ -60,9 +61,9 @@ void main() {
       );
       // Below the symbol and away from the rim, the selected lens should retain
       // this saturated cyan backdrop while applying the new resting grey tint.
-      final red = _channel(pixels, 46, 52, 0);
-      final green = _channel(pixels, 46, 52, 1);
-      final blue = _channel(pixels, 46, 52, 2);
+      final red = _channel(pixels, 22, 52, 0);
+      final green = _channel(pixels, 22, 52, 1);
+      final blue = _channel(pixels, 22, 52, 2);
       expect(red, lessThan(85));
       expect(green - red, greaterThan(95));
       expect(blue - red, greaterThan(140));
@@ -80,7 +81,7 @@ void main() {
     );
     for (final start in [32, 160]) {
       final reds = [
-        for (var x = start; x < start + 20; x++) _channel(pixels, x, 52, 0),
+        for (var x = start; x < start + 20; x++) _channel(pixels, x, 60, 0),
       ];
       final contrast =
           reds.reduce((a, b) => a > b ? a : b) -
@@ -103,7 +104,7 @@ void main() {
       );
       for (final start in [24, 160]) {
         final reds = [
-          for (var x = start; x < start + 40; x++) _channel(pixels, x, 52, 0),
+          for (var x = start; x < start + 40; x++) _channel(pixels, x, 60, 0),
         ];
         final contrast =
             reds.reduce((a, b) => a > b ? a : b) -

mobile/test/widgets/rschedule_navigation_test.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:hepan_everyday/app/hepan_app.dart';
+import 'package:hepan_everyday/features/timetable/timetable_page.dart';
 import 'package:timezone/data/latest.dart' as tzdata;
 
 import 'navigation_test.dart' show uiController;
@@ -19,7 +20,13 @@ void main() {
     await c.showDemo();
     await tester.pumpWidget(HepanApp(controller: c));
     await tester.pumpAndSettle();
-    expect(find.text('课表'), findsOneWidget);
+    expect(
+      find.descendant(
+        of: find.byType(TimetablePage),
+        matching: find.text('课表'),
+      ),
+      findsOneWidget,
+    );
     expect(find.bySemanticsLabel('考试'), findsOneWidget);
     await tester.drag(find.text('周三'), const Offset(0, -200));
     await tester.pumpAndSettle();

mobile/test/widgets/term_prompt_test.dart

@@ -67,7 +67,8 @@ void main() {
       await tester.pumpAndSettle();
       await tester.tap(find.bySemanticsLabel('考试'));
       await tester.pumpAndSettle();
-      expect(find.text('考试'), findsOneWidget);
+      // The page heading and Dock caption both show the active tab name.
+      expect(find.text('考试'), findsNWidgets(2));
       expect(find.text('考试安排'), findsOneWidget);
       await tester.tap(find.bySemanticsLabel('个人设置'));
       await tester.pumpAndSettle();