快速筛选优化 增加公告

frontend/src/features/listings/views/MobileHomeView.vue

@@ -58,6 +58,7 @@ const searchValue = ref('')
 const announcements = ref<string[]>(defaultHomeAnnouncements)
 const bannerSlides = ref<HomeBannerSlide[]>(defaultHomeBanners)
 const supportLoading = ref(false)
+const showBackTop = ref(false)
 const mobilePageSize = 10
 let listingRequestSeq = 0
 let searchDebounceTimer: ReturnType<typeof setTimeout> | null = null
@@ -442,10 +443,15 @@ function parseOptionalNumber(value: string) {
 }
 
 function handleWindowScroll() {
+  showBackTop.value = window.scrollY > 520
   if (window.innerHeight + window.scrollY < document.documentElement.scrollHeight - 360) return
   loadListings(false)
 }
 
+function scrollToTop() {
+  window.scrollTo({ top: 0, behavior: 'smooth' })
+}
+
 function isSkinGroupKey(key: string) {
   return publishOptions.value.skin_groups.some(group => group.key === key)
 }
@@ -523,7 +529,7 @@ function chipTone(label: string) {
       />
 
       <!-- 防骗提示卡片（不用 van-notice-bar） -->
-      <div class="fraud-tip">
+      <RouterLink class="fraud-tip" to="/m/announcements">
         <van-icon name="warning-o" :size="16" color="#b8860b" />
         <span class="fraud-dot"></span>
         <van-swipe
@@ -537,7 +543,8 @@ function chipTone(label: string) {
             <span>{{ item }}</span>
           </van-swipe-item>
         </van-swipe>
-      </div>
+        <van-icon class="fraud-more" name="arrow" :size="14" />
+      </RouterLink>
     </section>
 
     <!-- ========== Content 区域 ========== -->
@@ -719,6 +726,16 @@ function chipTone(label: string) {
       :range-presets="rangePresets"
     />
 
+    <button
+      v-if="showBackTop"
+      class="back-top-button"
+      type="button"
+      aria-label="回到顶部"
+      @click="scrollToTop"
+    >
+      <van-icon name="arrow-up" :size="20" />
+    </button>
+
     <MobileBottomNav />
   </main>
 </template>