提交H5业务闭环修复代码

src/components/audio/AudioPlayer.vue

@@ -11,7 +11,7 @@
       <view class="player-cover">
         <image 
           class="cover-image" 
-          :src="currentAudio?.image || '/static/exhibit-placeholder.jpg'" 
+          :src="currentAudio?.image || EXHIBIT_PLACEHOLDER_IMAGE" 
           mode="aspectFill" 
         />
       </view>
@@ -56,6 +56,9 @@
 
 <script setup lang="ts">
 import { ref, computed, onMounted, onUnmounted, watch } from 'vue'
+import {
+  EXHIBIT_PLACEHOLDER_IMAGE
+} from '@/utils/placeholders'
 
 export interface AudioItem {
   id: string