perf: mobile 产品分类与搜索页改为缩略图

app/index/view/mobile/product/search.html

@@ -17,7 +17,7 @@
         <div class="prlist">
             {volist name="products" id="pro"}
             <a class="pritem" href="{:url('product/detail',['id'=>$pro.id])}">
-                <img src="{$pro.cover_image}" class="primg"/>
+                <img src="{:thumb($pro.cover_image)}" class="primg"/>
                 <div class="prinfo">
                     <span class="t1">{$pro.name|raw}</span>
                     <span class="t2">{$pro.spu|raw}</span>