feat(user): 新增收货地址管理及售后申请页面

- 新增地址类型定义，增强前端地址数据结构
- 新增地址编辑页面，支持地址智能识别和定位选点功能
- 地址编辑支持省市区选择及默认地址设置
- 新增地址列表页面，支持地址展示、删除、编辑和选择功能
- 实现售后申请页面，支持选择售后类型和退款原因
- 售后申请支持商品选择、退款金额计算和凭证上传
- 新增售后详情页面，支持售后状态展示及申请取消
- 优化页面加载和用户交互体验，增加错误提示和权限处理

src_bak/pages/user/benefit-packages/index.tsx

@@ -0,0 +1,97 @@
+import { View, Text, Image, ScrollView } from '@tarojs/components';
+import Taro from '@tarojs/taro';
+import { useState, useEffect } from 'react';
+import { getBenefitPackageList } from '@/api/shop/shopMemberBenefit';
+import EmptyState from '@/components/common/EmptyState';
+import './index.scss';
+
+definePageConfig({
+  navigationBarTitleText: '会员权益包',
+});
+
+export default function BenefitPackagesPage() {
+  const [list, setList] = useState<any[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    loadList();
+  }, []);
+
+  const loadList = async () => {
+    try {
+      const res = await getBenefitPackageList();
+      if (res.code === 200) setList(res.data || []);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleExchange = (pkg: any) => {
+    Taro.navigateTo({
+      url: `/pages/user/benefit-exchange-confirm/index?id=${pkg.id}`,
+    });
+  };
+
+  const handleHistory = () => {
+    Taro.navigateTo({ url: '/pages/user/benefit-exchange-list/index' });
+  };
+
+  return (
+    <View className="benefit-page">
+      {/* 顶部提示 */}
+      <View className="top-banner">
+        <Text className="banner-title">专属会员权益</Text>
+        <Text className="banner-sub">成为会员，即可申请兑换以下权益包</Text>
+        <Text className="history-link" onClick={handleHistory}>
+          兑换记录 &gt;
+        </Text>
+      </View>
+
+      <ScrollView className="pkg-list" scrollY>
+        {!loading && list.length === 0 && (
+          <EmptyState description="暂无可用权益包" />
+        )}
+        {list.map((pkg) => (
+          <View key={pkg.id} className="pkg-card">
+            {pkg.coverImage && (
+              <Image className="pkg-cover" src={pkg.coverImage} mode="aspectFill" />
+            )}
+            <View className="pkg-body">
+              <View className="pkg-header">
+                <Text className="pkg-name">{pkg.name}</Text>
+                {pkg.tag && <Text className="pkg-tag">{pkg.tag}</Text>}
+              </View>
+              {pkg.description && (
+                <Text className="pkg-desc">{pkg.description}</Text>
+              )}
+              <View className="pkg-footer">
+                <View className="pkg-cost">
+                  {pkg.pointsCost > 0 && (
+                    <Text className="cost-points">{pkg.pointsCost}积分</Text>
+                  )}
+                  {pkg.balanceCost > 0 && (
+                    <Text className="cost-balance">¥{pkg.balanceCost}</Text>
+                  )}
+                  {pkg.pointsCost === 0 && pkg.balanceCost === 0 && (
+                    <Text className="cost-free">免费</Text>
+                  )}
+                </View>
+                <View className="pkg-stock">
+                  {pkg.stock === -1
+                    ? '不限库存'
+                    : `剩余 ${pkg.stock} 件`}
+                </View>
+                <View
+                  className={`exchange-btn ${pkg.stock === 0 ? 'disabled' : ''}`}
+                  onClick={() => pkg.stock !== 0 && handleExchange(pkg)}
+                >
+                  {pkg.stock === 0 ? '已兑完' : '立即兑换'}
+                </View>
+              </View>
+            </View>
+          </View>
+        ))}
+      </ScrollView>
+    </View>
+  );
+}