优化首页分页和图片上传

frontend/src/views/mobile/MobileListingDetailView.vue

@@ -203,6 +203,7 @@ function isNavActive(path: string) {
           :src="detailScreenshots[0].url"
           :alt="getListingTitle(listing)"
           class="cover-img"
+          decoding="async"
         />
         <div v-else class="cover-placeholder">
           <van-icon name="photo-o" :size="40" color="#ccc" />
@@ -307,7 +308,7 @@ function isNavActive(path: string) {
         <h3 class="card-subtitle">账号截图</h3>
         <div class="screenshot-grid">
           <figure v-for="shot in detailScreenshots" :key="shot.url" class="screenshot-item">
-            <img :src="shot.url" class="screenshot-thumb" />
+            <img :src="shot.url" class="screenshot-thumb" loading="lazy" decoding="async" />
             <figcaption>{{ shot.label }}</figcaption>
           </figure>
         </div>