新增首页 AW炫彩回收入口，支持后台配置展示图

首页第三入口点击查看回收说明图；配置项 mobile.aw_recycle 可配标题/图片；aw-recycle 走公开文件链路，首页鉴权预览兼容旧私有地址。

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

@@ -345,8 +345,8 @@
 
 .biz-entry-grid {
   display: grid;
-  grid-template-columns: repeat(2, minmax(0, 1fr));
-  gap: 10px;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 8px;
   margin: 0 0 12px;
 }
 
@@ -356,14 +356,22 @@
   flex-direction: column;
   gap: 4px;
   min-width: 0;
-  padding: 12px 12px 12px 14px;
+  padding: 12px 10px 12px 12px;
   border-radius: 14px;
   background: #ffffff;
   border: 1px solid #eef1f5;
   text-decoration: none;
+  text-align: left;
+  cursor: pointer;
+  font: inherit;
   box-shadow: 0 4px 14px rgba(23, 35, 61, 0.04);
 }
 
+.biz-entry.aw-recycle {
+  border-color: #e8edff;
+  background: linear-gradient(135deg, #ffffff 0%, #f5f8ff 100%);
+}
+
 .biz-entry strong {
   color: #17233d;
   font-size: 15px;