fix(user): 修复「我的」页订单数量统计显示为 0 的问题

- 修正 UserOrderStats 接口字段与后端 DTO 完全对齐
- getUserOrderStats() 读取后端真实字段，数值使用 Number(x) 兜底
- 「我的订单」快捷入口 count 和 status 与 OrderListStatus 枚举对齐
- localStorage 缓存 key 升级至 v3，避免旧缓存干扰冷启动渲染
- 保证所有跳转订单列表的入口传递正确 status 参数，防止跳转错误的 tab

src/pages/user/user.tsx

@@ -41,7 +41,8 @@ const UserPage: React.FC = () => {
         cacheKey: 'user_order_stats',
         cacheTime: 30 * 1000,
         onSuccess: (data) => {
-            Taro.setStorageSync('user_order_stats_v2', data)
+            // v3: 字段结构变更（与后端 UserOrderStats DTO 对齐），旧版 v2 缓存自动失效
+            Taro.setStorageSync('user_order_stats_v3', data)
         },
     })
 
@@ -51,7 +52,7 @@ const UserPage: React.FC = () => {
             // 冷启动优化：先从 localStorage 读取缓存即时展示，消除骨架屏
             const cachedCardStats = Taro.getStorageSync('user_card_stats_v2')
             if (cachedCardStats) mutateCardStats(cachedCardStats)
-            const cachedOrderStats = Taro.getStorageSync('user_order_stats_v2')
+            const cachedOrderStats = Taro.getStorageSync('user_order_stats_v3')
             if (cachedOrderStats) mutateOrderStats(cachedOrderStats)
             // 然后发起网络请求（stale-while-revalidate 后台刷新）
             runCardStats()
@@ -78,7 +79,7 @@ const UserPage: React.FC = () => {
             if (cachedCardStats) {
                 mutateCardStats(cachedCardStats)
             }
-            const cachedOrderStats = Taro.getStorageSync('user_order_stats_v2')
+            const cachedOrderStats = Taro.getStorageSync('user_order_stats_v3')
             if (cachedOrderStats) {
                 mutateOrderStats(cachedOrderStats)
             }
@@ -263,10 +264,11 @@ const UserPage: React.FC = () => {
                     </View>
                     <View className='grid grid-cols-4 gap-2'>
                         {[
-                            { icon: '💳', label: '待付款', status: 0, count: orderStats?.pending },
-                            { icon: '📦', label: '待发货', status: 1, count: orderStats?.paid },
-                            { icon: '🚚', label: '待收货', status: 2, count: orderStats?.shipped },
-                            { icon: '✅', label: '已完成', status: 3, count: orderStats?.completed },
+                            // status 与 OrderListStatus 对齐：0待付款 1待发货 3待收货 5已完成
+                            { icon: '💳', label: '待付款', status: 0, count: orderStats?.waitPay },
+                            { icon: '📦', label: '待发货', status: 1, count: orderStats?.waitDeliver },
+                            { icon: '🚚', label: '待收货', status: 3, count: orderStats?.waitReceive },
+                            { icon: '✅', label: '已完成', status: 5, count: orderStats?.completed },
                         ].map(item => (
                             <View
                                 key={item.status}