refactor(components): 优化卡片组件并更新运行时配置

- 移除多个卡片组件的懒加载属性以提升首屏性能
- 使用ImagePlaceholder组件统一骨架屏实现
- 修复DemoCard组件中的拼写错误
- 标准化runtime.ts中的JSON格式
- 更新package.json中的包管理器配置

src/components/DoubanCardSkeleton.tsx

@@ -1,11 +1,11 @@
+import { ImagePlaceholder } from '@/components/ImagePlaceholder';
+
 const DoubanCardSkeleton = () => {
   return (
     <div className='w-full'>
       <div className='group relative w-full rounded-lg bg-transparent shadow-none flex flex-col'>
-        {/* 海报骨架 - 2:3 比例 */}
-        <div className='relative aspect-[2/3] w-full overflow-hidden rounded-lg bg-gray-200 animate-pulse dark:bg-gray-800'>
-          <div className='absolute inset-0 bg-gray-300 dark:bg-gray-700'></div>
-        </div>
+        {/* 图片占位符 - 骨架屏效果 */}
+        <ImagePlaceholder aspectRatio='aspect-[2/3]' />
 
         {/* 信息层骨架 */}
         <div className='absolute top-[calc(100%+0.5rem)] left-0 right-0'>