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-exchange-confirm/index.scss

@@ -0,0 +1,200 @@
+.confirm-page {
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+  background: #f5f5f5;
+  padding-bottom: 160rpx;
+}
+
+/* 地址卡片 */
+.address-card {
+  position: relative;
+  background: #fff;
+  margin: 24rpx 24rpx 0;
+  border-radius: 16rpx;
+  padding: 24rpx 48rpx 24rpx 24rpx;
+}
+
+.addr-info {
+  display: flex;
+  align-items: center;
+  gap: 24rpx;
+  margin-bottom: 8rpx;
+}
+
+.addr-name {
+  font-size: 28rpx;
+  font-weight: bold;
+  color: #333;
+}
+
+.addr-phone {
+  font-size: 26rpx;
+  color: #666;
+}
+
+.addr-detail {
+  display: block;
+  font-size: 24rpx;
+  color: #666;
+}
+
+.addr-empty {
+  display: block;
+  font-size: 28rpx;
+  color: #ff6b35;
+  text-align: center;
+  padding: 8rpx 0;
+}
+
+.addr-arrow {
+  position: absolute;
+  right: 24rpx;
+  top: 50%;
+  transform: translateY(-50%);
+  font-size: 28rpx;
+  color: #ccc;
+}
+
+/* 权益包信息 */
+.pkg-info-card {
+  background: #fff;
+  margin: 16rpx 24rpx 0;
+  border-radius: 16rpx;
+  overflow: hidden;
+  display: flex;
+}
+
+.pkg-img {
+  width: 200rpx;
+  height: 180rpx;
+  flex-shrink: 0;
+}
+
+.pkg-detail {
+  flex: 1;
+  padding: 20rpx 24rpx;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+}
+
+.pkg-name {
+  display: block;
+  font-size: 28rpx;
+  font-weight: bold;
+  color: #333;
+  margin-bottom: 8rpx;
+}
+
+.pkg-desc {
+  display: block;
+  font-size: 22rpx;
+  color: #999;
+  line-height: 1.5;
+  margin-bottom: 8rpx;
+}
+
+.pkg-cost-row {
+  display: flex;
+  align-items: center;
+  gap: 12rpx;
+}
+
+.cost-item {
+  font-size: 28rpx;
+  font-weight: bold;
+}
+
+.cost-item.points { color: #ff6b35; }
+.cost-item.balance { color: #ff6b35; }
+.cost-item.free { color: #07c160; }
+
+/* 须知 */
+.notice-card {
+  background: #fff;
+  margin: 16rpx 24rpx 0;
+  border-radius: 16rpx;
+  padding: 24rpx;
+}
+
+.notice-title {
+  display: block;
+  font-size: 26rpx;
+  font-weight: bold;
+  color: #333;
+  margin-bottom: 12rpx;
+}
+
+.notice-item {
+  display: block;
+  font-size: 22rpx;
+  color: #999;
+  line-height: 1.8;
+}
+
+/* 我的资产 */
+.assets-card {
+  background: #fff;
+  margin: 16rpx 24rpx 0;
+  border-radius: 16rpx;
+  padding: 24rpx;
+}
+
+.assets-title {
+  display: block;
+  font-size: 26rpx;
+  font-weight: bold;
+  color: #333;
+  margin-bottom: 16rpx;
+}
+
+.assets-row {
+  display: flex;
+  gap: 48rpx;
+}
+
+.asset-item {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  flex: 1;
+}
+
+.asset-value {
+  font-size: 36rpx;
+  font-weight: bold;
+  color: #ff6b35;
+  line-height: 1.2;
+}
+
+.asset-label {
+  font-size: 22rpx;
+  color: #999;
+  margin-top: 6rpx;
+}
+
+/* 底部按钮 */
+.bottom-bar {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  background: #fff;
+  padding: 24rpx;
+  box-shadow: 0 -2rpx 12rpx rgba(0,0,0,0.08);
+}
+
+.confirm-btn {
+  padding: 28rpx 0;
+  text-align: center;
+  background: linear-gradient(135deg, #ff6b35 0%, #ff9a56 100%);
+  color: #fff;
+  font-size: 32rpx;
+  font-weight: bold;
+  border-radius: 48rpx;
+}
+
+.confirm-btn.disabled {
+  opacity: 0.5;
+}