feat: 添加预览效果页面并优化交互效果

refactor: 优化代码健壮性和类型安全

style: 更新字体样式和全局CSS

fix: 修复IntersectionObserver潜在空引用问题

chore: 更新依赖和ESLint配置

build: 更新构建ID和路由配置

src/lib/utils.ts

@@ -22,7 +22,7 @@ export function debounce<T extends (...args: unknown[]) => unknown>(
 ): (...args: Parameters<T>) => void {
   let timeout: NodeJS.Timeout | null = null
   return (...args: Parameters<T>) => {
-    if (timeout) clearTimeout(timeout)
+    if (timeout) {clearTimeout(timeout)}
     timeout = setTimeout(() => func(...args), wait)
   }
 }