feat: 优化前端 UI 与交互体验

apps/test/features/home/ui/widgets/home_screen_layout_test.dart

@@ -84,6 +84,8 @@ void main() {
       await pumpHomeScreen(tester);
 
       expect(find.byKey(homeFloatingHeaderKey), findsOneWidget);
+      expect(find.byKey(homeFloatingHeaderTitleKey), findsOneWidget);
+      expect(find.text('Linksy'), findsOneWidget);
       expect(find.byKey(homeConversationStageKey), findsOneWidget);
       expect(find.byKey(homeBottomInputStackKey), findsOneWidget);
     },

apps/test/features/settings/ui/screens/change_password_screen_test.dart

@@ -56,7 +56,7 @@ void main() {
       find.widgetWithText(ElevatedButton, '确认修改'),
     );
     expect(confirmButton.onPressed, isNull);
-    expect(find.text('完成验证码验证后可提交密码修改'), findsOneWidget);
+    expect(find.text('设置新密码'), findsNothing);
   });
 
   testWidgets('发送验证码倒计时期间不会重复触发请求', (tester) async {
@@ -67,13 +67,11 @@ void main() {
 
     await pumpScreen(tester);
 
-    await tester.tap(find.text('发送验证码'));
+    await tester.tap(find.widgetWithText(ElevatedButton, '发送验证码'));
     await tester.pump();
 
     expect(find.text('60 秒后可重发'), findsOneWidget);
-
-    await tester.tap(find.text('60 秒后可重发'));
-    await tester.pump();
+    expect(find.text('设置新密码'), findsOneWidget);
 
     verify(
       () => mockAuthRepository.requestPasswordReset('tester@example.com'),

apps/test/features/settings/ui/widgets/account_surface_widgets_test.dart

@@ -44,4 +44,24 @@ void main() {
     expect(find.text('主体内容'), findsOneWidget);
     expect(find.text('底部操作区'), findsOneWidget);
   });
+
+  testWidgets('AccountSurfaceScaffold renders compact header title', (
+    tester,
+  ) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: AccountSurfaceScaffold(
+          title: '账户',
+          subtitle: '不会在紧凑模式显示',
+          compactHeaderTitle: true,
+          body: const Text('主体内容'),
+          onBack: () {},
+        ),
+      ),
+    );
+
+    expect(find.text('账户'), findsOneWidget);
+    expect(find.text('不会在紧凑模式显示'), findsNothing);
+    expect(find.text('主体内容'), findsOneWidget);
+  });
 }