refactor(views/checkin): 更新模拟数据并清理注释代码

- 取消注释并启用两个模拟帖子数据
- 移除音频条目中的艺术家和封面信息
- 保持数据结构一致性，简化测试数据

 <!--
  * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-05-30 18:29:10
+ * @LastEditTime: 2025-05-30 18:31:25
  * @FilePath: /mlaj/src/views/checkin/IndexCheckInPage.vue
  * @Description: 文件描述
 -->
@@ -300,41 +300,41 @@ const stopAllVideos = () => {
 
 // Mock数据
 const mockPosts = ref([
-  // {
-  //   id: 1,
-  //   user: {
-  //     name: '图片预览',
-  //     avatar: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //     time: '2小时前'
-  //   },
-  //   content: '今天完成了React基础课程的学习，收获满满！',
-  //   images: [
-  //     'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //     'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //     'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //     'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //   ],
-  //   video: '',
-  //   videoCover: '',
-  //   isPlaying: false,
-  //   audio: [],
-  //   likes: 12
-  // },
-  // {
-  //   id: 2,
-  //   user: {
-  //     name: '小林',
-  //     avatar: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //     time: '2小时前'
-  //   },
-  //   content: '今天完成了React基础课程的学习，收获满满！',
-  //   images: [],
-  //   video: 'https://cdn.ipadbiz.cn/space/lk3DmvLO02dUC2zPiFwiClDe3nKL.mp4',
-  //   videoCover: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
-  //   isPlaying: false,
-  //   audio: [],
-  //   likes: 12
-  // },
+  {
+    id: 1,
+    user: {
+      name: '图片预览',
+      avatar: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+      time: '2小时前'
+    },
+    content: '今天完成了React基础课程的学习，收获满满！',
+    images: [
+      'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+      'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+      'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+      'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+    ],
+    video: '',
+    videoCover: '',
+    isPlaying: false,
+    audio: [],
+    likes: 12
+  },
+  {
+    id: 2,
+    user: {
+      name: '小林',
+      avatar: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+      time: '2小时前'
+    },
+    content: '今天完成了React基础课程的学习，收获满满！',
+    images: [],
+    video: 'https://cdn.ipadbiz.cn/space/lk3DmvLO02dUC2zPiFwiClDe3nKL.mp4',
+    videoCover: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg',
+    isPlaying: false,
+    audio: [],
+    likes: 12
+  },
   {
     id: 3,
     user: {
@@ -350,15 +350,15 @@ const mockPosts = ref([
     audio: [
       {
         title: '学习心得分享1',
-        artist: '小林',
+        artist: '',
         url: 'https://cdn.ipadbiz.cn/space/816560/双手合十迎客来_Fs2W-5mnQSFL8S5CDsHho-_xcvaY.mp3',
-        cover: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg'
+        cover: ''
       },
       {
         title: '学习心得分享2',
-        artist: '小林',
+        artist: '',
         url: 'https://cdn.ipadbiz.cn/space/816560/双手合十迎客来_Fs2W-5mnQSFL8S5CDsHho-_xcvaY.mp3',
-        cover: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg'
+        cover: ''
       }
     ],
     likes: 12
@@ -393,9 +393,9 @@ const mockPosts = ref([
     audio: [
       {
         title: '学习心得分享',
-        artist: '小林',
+        artist: '',
         url: 'https://cdn.ipadbiz.cn/space/816560/双手合十迎客来_Fs2W-5mnQSFL8S5CDsHho-_xcvaY.mp3',
-        cover: 'https://cdn.ipadbiz.cn/space/816560/大国少年_FhnF8lsFMPnTDNTBlM6hYa-UFBlW.jpg'
+        cover: ''
       }
     ],
     likes: 12