refactor: 移动端升级 Vue3 + uView Plus

将 lilishop-uniapp 从 Vue2/uView 1.6 迁移到 Vue3/uview-plus，优先支持 H5/微商城与微信小程序；移除 vendored uview-ui，改用 npm 依赖、Vuex4 与迁移脚本/补丁，并补充 VUE3_MIGRATION.md 回归清单。

Co-authored-by: Cursor <cursoragent@cursor.com>

pages/tabbar/home/template/tpl_group.vue

@@ -2,8 +2,8 @@
   <div class="layout">
     <div class="join-list">
       <div class="join-title">
-        <div>{{ res.list[0].title }}</div>
-        <div>更多</div>
+        <div class="join-title-name">{{ res.list[0].title }}</div>
+        <div class="join-title-more">更多</div>
       </div>
       <div class="join-box">
         <div class="join-item" @click="modelNavigateTo(item)" v-for="item in 4" :key="item">
@@ -11,10 +11,10 @@
             <img class="item-img" src="https://picsum.photos/id/268/200/200" alt />
           </div>
           <div class="item-price">
-            <span>￥120.00</span>
+            <span class="price-text">￥120.00</span>
           </div>
           <div class="item-line-through">
-            <span>￥190.00</span>
+            <span class="price-text">￥190.00</span>
           </div>
         </div>
       </div>