feat(检查页面): 添加点赞功能交互和状态显示

- 在帖子底部添加点击事件处理函数 handLike
- 为点赞图标添加颜色状态显示（红色表示已点赞）
- 为 mock 数据添加 is_liked 字段记录点赞状态
- 使用可选链操作符优化视频暂停逻辑

 <!--
  * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-03 11:30:33
+ * @LastEditTime: 2025-06-03 13:43:53
  * @FilePath: /mlaj/src/views/checkin/IndexCheckInPage.vue
  * @Description: 文件描述
 -->
@@ -125,8 +125,8 @@
               />
             </div>
           </div>
-          <div class="post-footer">
-            <van-icon name="like" class="like-icon" />
+          <div class="post-footer" @click="handLike(post)">
+            <van-icon name="like" class="like-icon" :color="post.is_liked ? 'red' : ''" />
             <span class="like-count">{{ post.likes }}</span>
           </div>
         </div>
@@ -159,8 +159,8 @@ onBeforeUnmount(() => {
   // 停止所有视频和音频播放
   if (videoPlayers.value) {
     videoPlayers.value.forEach(player => {
-      if (player && typeof player.pause === 'function') {
-        player.pause();
+      if (player && typeof player?.pause === 'function') {
+        player?.pause();
       }
     });
   }
@@ -322,7 +322,8 @@ const mockPosts = ref([
     videoCover: '',
     isPlaying: false,
     audio: [],
-    likes: 12
+    likes: 12,
+    is_liked: false,
   },
   {
     id: 2,
@@ -348,7 +349,8 @@ const mockPosts = ref([
     videoCover: '',
     isPlaying: false,
     audio: [],
-    likes: 12
+    likes: 12,
+    is_liked: false,
   },
   {
     id: 3,
@@ -377,7 +379,8 @@ const mockPosts = ref([
         cover: ''
       }
     ],
-    likes: 12
+    likes: 12,
+    is_liked: false,
   },
   {
     id: 4,
@@ -403,7 +406,8 @@ const mockPosts = ref([
     videoCover: '',
     isPlaying: false,
     audio: [],
-    likes: 12
+    likes: 12,
+    is_liked: false,
   },
   {
     id: 5,
@@ -426,7 +430,8 @@ const mockPosts = ref([
         cover: ''
       }
     ],
-    likes: 12
+    likes: 12,
+    is_liked: false,
   },
 ]);
 
@@ -486,6 +491,11 @@ const goToCheckinImagePage = () => {
 const goToCheckinFilePage = () => {
   router.push('/checkin/file');
 }
+
+const handLike = (post) => {
+  post.is_liked = !post.is_liked;
+  // TODO: 调用接口
+}
 </script>
 
 <style lang="less">