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_banner.vue

@@ -1,11 +1,23 @@
 <template>
-  <div class="layout">
-    <div class="box">
-      <u-swiper @click="clickSwiper" interval="5000" duration="500" height="350" v-if="res" name="img" :list="res.list">
-        <u-loading slot="loading"></u-loading>
+  <view class="layout">
+    <view class="banner-box">
+      <u-swiper
+        v-if="res && res.list && res.list.length"
+        class="home-banner-swiper"
+        :list="res.list"
+        keyName="img"
+        height="350rpx"
+        imgMode="scaleToFill"
+        interval="5000"
+        duration="500"
+        circular
+        indicator
+        @click="clickSwiper"
+      >
+        <template #loading><u-loading></u-loading></template>
       </u-swiper>
-    </div>
-  </div>
+    </view>
+  </view>
 </template>
 
 <script>
@@ -16,7 +28,7 @@ export default {
   watch: {
     res: {
       handler(newValue, oldValue) {
-        this.$set(this, "res", newValue);
+        this["res"] = newValue;
       },
       deep: true,
     },
@@ -34,4 +46,25 @@ export default {
 </script>
 <style lang="scss" scoped>
 @import "./tpl.scss";
+
+.banner-box {
+  width: 100%;
+  overflow: hidden;
+}
+
+:deep(.home-banner-swiper),
+:deep(.u-swiper),
+:deep(.u-swiper__wrapper) {
+  width: 100%;
+}
+
+:deep(.u-swiper__wrapper__item),
+:deep(.u-swiper__wrapper__item__wrapper) {
+  width: 100%;
+}
+
+:deep(.u-swiper__wrapper__item__wrapper__image) {
+  width: 100% !important;
+  display: block;
+}
 </style>