refactor(frontend): Rework home layout and user interactions

frontend/video-frontend-web/src/mock/index.ts

@@ -376,7 +376,7 @@ const mockHandlers: Record<string, (url: string, options: any) => Promise<any>>
   'GET /comment/public/list': async (_url: string, options: any) => {
     await delay()
     const params = options.params || {}
-    let comments = mockComments.filter(c => c.videoId === params.videoId)
+    const comments = mockComments.filter(c => c.videoId === params.videoId)
     if (params.sortBy === 'hot') {
       comments.sort((a, b) => b.likeCount - a.likeCount)
     } else {
@@ -526,7 +526,7 @@ const mockHandlers: Record<string, (url: string, options: any) => Promise<any>>
 // 匹配 Mock 处理器
 function matchHandler(url: string, method: string): ((url: string, options: any) => Promise<any>) | null {
   // 标准化 URL（移除查询参数和 /api 前缀）
-  let normalizedUrl = url.replace(/^\/api/, '').split('?')[0]
+  const normalizedUrl = url.replace(/^\/api/, '').split('?')[0]
 
   // 构建匹配模式
   const patterns = Object.keys(mockHandlers)