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/app/(marketing)/news/[slug]/NewsDetailClient.test.tsx

@@ -10,9 +10,11 @@ jest.mock('next/navigation', () => ({
 }));
 
 jest.mock('next/link', () => {
-  return ({ children, href }: { children: React.ReactNode; href: string }) => {
+  const MockLink = ({ children, href }: { children: React.ReactNode; href: string }) => {
     return <a href={href}>{children}</a>;
   };
+  MockLink.displayName = 'MockLink';
+  return MockLink;
 });
 
 jest.mock('framer-motion', () => ({
@@ -39,8 +41,8 @@ describe('NewsDetailClient', () => {
   describe('Rendering', () => {
     it('should render news detail page', () => {
       render(<NewsDetailClient news={mockNews as any} />);
-      const container = screen.getByText('测试新闻标题').closest('div');
-      expect(container).toBeInTheDocument();
+      const titles = screen.getAllByText('测试新闻标题');
+      expect(titles.length).toBeGreaterThan(0);
     });
 
     it('should render news title', () => {