test: 修复因预发布模式文案变更导致的测试失败

- header/footer/mobile-menu/mobile-tab-bar: 更新导航项断言与 mock
- insight-card/page-header: 适配组件结构变更（InkGlowCard、Badge）
- about/products/news: 修复重复文本匹配，添加 PageNav/date-fns mock
- constants: 更新服务标题断言
- 修复 mock 组件缺少 displayName 的 ESLint 错误

src/components/sections/about-section.test.tsx

@@ -11,7 +11,9 @@ jest.mock('framer-motion', () => ({
 }));
 
 jest.mock('next/link', () => {
-  return ({ children, href }: any) => <a href={href}>{children}</a>;
+  const MockLink = ({ children, href }: any) => <a href={href}>{children}</a>;
+  MockLink.displayName = 'MockLink';
+  return MockLink;
 });
 
 describe('AboutSection', () => {
@@ -33,12 +35,12 @@ describe('AboutSection', () => {
 
     it('should render company slogan', () => {
       render(<AboutSection />);
-      expect(screen.getByText(/企业需要的/)).toBeInTheDocument();
+      expect(screen.getByText(/数字化转型不是一场冒险/)).toBeInTheDocument();
     });
 
     it('should render company mission', () => {
       render(<AboutSection />);
-      expect(screen.getByText(/我们只做一件事/)).toBeInTheDocument();
+      expect(screen.getByText(/务实/)).toBeInTheDocument();
     });
   });
 
@@ -51,21 +53,17 @@ describe('AboutSection', () => {
 
     it('should display statistics in grid layout', () => {
       const { container } = render(<AboutSection />);
-      const grid = container.querySelector('.grid-cols-2');
+      const grid = container.querySelector('.grid-cols-1');
       expect(grid).toBeInTheDocument();
     });
   });
 
   describe('Call to Action', () => {
-    it('should render learn more button', () => {
+    it('should render value cards with titles', () => {
       render(<AboutSection />);
-      expect(screen.getByRole('link', { name: /了解更多关于我们/ })).toBeInTheDocument();
-    });
-
-    it('should link to about page', () => {
-      render(<AboutSection />);
-      const link = screen.getByRole('link', { name: /了解更多关于我们/ });
-      expect(link).toHaveAttribute('href', '/about');
+      expect(screen.getByText('务实')).toBeInTheDocument();
+      expect(screen.getByText('共情')).toBeInTheDocument();
+      expect(screen.getByText('敏捷')).toBeInTheDocument();
     });
   });
 
@@ -99,7 +97,7 @@ describe('AboutSection', () => {
     it('should have proper padding', () => {
       render(<AboutSection />);
       const section = document.querySelector('section#about');
-      expect(section).toHaveClass('py-24');
+      expect(section).toHaveClass('py-20');
     });
 
     it('should have decorative background pattern', () => {