chore: sync marketing pages, CMS extensions, tests and project docs

同步工作区剩余变更，主要包括：
- 营销页面组件与布局持续优化（about/news/services/solutions/team 等）
- 详情页四层叙事组件、布局组件、UI 组件调整
- CMS 数据模型、API 路由、权限、工作流、站内通知、媒体管理扩展
- 新增/补充单元测试与 E2E 测试（cms-workflow.spec.ts 等）
- ESLint 9 迁移、jest/tsconfig 配置更新、依赖调整
- 新增 ADR、CMS 评估文档、Release Review / Acceptance 报告
- 移除水墨装饰组件与大体积未使用字体文件

src/components/layout/mobile-menu.test.tsx

@@ -156,29 +156,33 @@ describe('MobileMenu', () => {
   });
 
   describe('Keyboard Navigation', () => {
-    it('should open menu with Enter key', () => {
+    it('should open menu with button click', () => {
       render(<MobileMenu />);
       const button = screen.getByRole('button', { name: '打开菜单' });
       fireEvent.click(button);
-      
+
       expect(screen.getByRole('navigation')).toBeInTheDocument();
     });
 
-    it('should open menu with Space key', () => {
+    it('should not double-toggle menu on Enter or Space keydown', () => {
       render(<MobileMenu />);
       const button = screen.getByRole('button', { name: '打开菜单' });
-      fireEvent.click(button);
-      
-      expect(screen.getByRole('navigation')).toBeInTheDocument();
+
+      // Enter/Space 由原生 button 的 click 处理，keydown 不应再次 toggle
+      fireEvent.keyDown(button, { key: 'Enter' });
+      expect(screen.queryByRole('navigation')).not.toBeInTheDocument();
+
+      fireEvent.keyDown(button, { key: ' ' });
+      expect(screen.queryByRole('navigation')).not.toBeInTheDocument();
     });
 
     it('should close menu with Escape key', () => {
       render(<MobileMenu />);
       const button = screen.getByRole('button', { name: '打开菜单' });
       fireEvent.click(button);
-      
+
       fireEvent.keyDown(button, { key: 'Escape' });
-      
+
       expect(screen.queryByRole('navigation')).not.toBeInTheDocument();
     });
   });