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/DemoCard.tsx

@@ -58,7 +58,7 @@ const DemoCard = ({ id, title, poster, rate, type }: DemoCardProps) => {
 
   return (
     <div
-      className='group relative w-full rounded-lg bg-transparent flex flex-col cursor-pointer transition-all duration-300 ease-in-out'
+      className='group relative w-full rounded-lg bg-transparen flex flex-col cursor-pointer transition-all duration-300 ease-in-out'
       onClick={handleClick}
     >
       {/* 海报图片区域 */}
@@ -72,7 +72,6 @@ const DemoCard = ({ id, title, poster, rate, type }: DemoCardProps) => {
           alt={title}
           fill
           ref={imgRef}
-          loading='lazy'
           className={`object-cover transition-transform duration-500 cubic-bezier(0.4,0,0.2,1) group-hover:scale-110
                       ${
                         isLoaded