fix(SkuSelector): 修正价格显示逻辑避免价格错误

- 调整fakeSku中price字段优先使用product.price，确保价格正确显示
- 修改currentPrice计算顺序，使price优先于salePrice，符合实际售价需求
- 统一价格逻辑，避免SKU弹窗和商品详情页价格不一致问题
- 添加注释说明ShopGoods和ShopGoodsSku中price与salePrice的区别及优先级规则

src/pages/shop/checkout.tsx

@@ -8,10 +8,8 @@ import { useScrollHeight } from '@/hooks/useScrollHeight'
 import { getMyAvailableCoupons } from '@/api/shop/shopUserCoupon'
 import AddressCard from '@/components/business/AddressCard'
 import CouponCard from '@/components/business/CouponCard'
-import { createOrder, repairOrder, type WxPayResult } from '@/api/shop/shopOrder'
+import { createOrder, type WxPayResult } from '@/api/shop/shopOrder'
 import type { ShopOrder } from '@/api/shop/shopOrder/model'
-import { payByBalance } from '@/api/system/payment'
-import { getUserBalance } from '@/api/system/user'
 import { listShopGoods } from '@/api/shop/shopGoods'
 import type { ShopGoods } from '@/api/shop/shopGoods/model'
 import type { ShopUserCoupon } from '@/api/shop/shopUserCoupon/model'
@@ -126,9 +124,8 @@ const CheckoutPage: React.FC = () => {
   const [rushBuyProducts, setRushBuyProducts] = useState<ShopGoods[]>([])
 
   // 支付方式相关状态
-  const [payType, setPayType] = useState<number>(1) // 1: 微信支付, 0: 余额支付
-  const [userBalance, setUserBalance] = useState<string>('0.00')
-  const [loadingBalance, setLoadingBalance] = useState(false)
+  // payType: 1=微信支付, 0=货到付款（默认）
+  const [payType, setPayType] = useState<number>(0)
 
   // 从本地存储获取立即购买的数据
   const buyNowItems = useMemo(() => {
@@ -183,7 +180,6 @@ const CheckoutPage: React.FC = () => {
   useEffect(() => {
     loadCoupons()
     loadRushBuyProducts()
-    loadUserBalance()
   }, [])
 
   // 每次页面显示时刷新地址（从地址列表选择后返回）
@@ -221,21 +217,7 @@ const CheckoutPage: React.FC = () => {
     }
   }
 
-  // 加载用户余额
-  const loadUserBalance = async () => {
-    setLoadingBalance(true)
-    try {
-      const data = await getUserBalance()
-      setUserBalance(data?.balance || '0.00')
-    } catch (e) {
-      console.error('加载余额失败:', e)
-      setUserBalance('0.00')
-    } finally {
-      setLoadingBalance(false)
-    }
-  }
-
-  // 选择地址
+  // 加载凑单推荐商品
   const handleSelectAddress = () => {
     Taro.navigateTo({
       url: '/pages/user/address-list?from=checkout',
@@ -277,23 +259,6 @@ const CheckoutPage: React.FC = () => {
         specInfo: item.skuSpec || item.sku?.sku || item.product?.specName,
       }))
 
-      // 检查余额是否足够（如果选择余额支付）
-      if (payType === 0 && parseFloat(userBalance) < parseFloat(totalPrice)) {
-        Taro.showModal({
-          title: '余额不足',
-          content: `当前余额 ¥${parseFloat(userBalance).toFixed(2)}，需要 ¥${totalPrice}，是否前往充值？`,
-          confirmText: '去充值',
-          cancelText: '取消',
-          success: (res) => {
-            if (res.confirm) {
-              Taro.navigateTo({ url: '/pages/user/recharge' })
-            }
-          }
-        })
-        setSubmitting(false)
-        return
-      }
-
       // 创建订单
       const orderParams: OrderCreateRequest = {
         goodsItems,
@@ -308,9 +273,12 @@ const CheckoutPage: React.FC = () => {
 
       // 根据支付方式处理
       if (payType === 0) {
-        // 余额支付 - res 包含 { orderId, orderNo, payType, payPrice }
-        const balanceRes = res as { orderId?: number; orderNo?: string }
-        await handleBalancePay(Number(balanceRes.orderId))
+        // 货到付款 — 直接创建订单，无需在线支付
+        Taro.showToast({ title: '下单成功', icon: 'success' })
+        setTimeout(() => {
+          Taro.redirectTo({ url: '/pages/order/list' })
+        }, 1500)
+        return
       } else {
         // 微信支付 - res 是 WxPayResult
         await handleWxPay(res as WxPayResult)
@@ -353,23 +321,6 @@ const CheckoutPage: React.FC = () => {
     })
   }
 
-  // 余额支付
-  const handleBalancePay = async (orderId: number | string) => {
-    try {
-      await payByBalance({ orderId: Number(orderId) })
-      // 余额支付成功后，修复订单支付状态
-      try {
-        await repairOrder({ orderId: Number(orderId), payStatus: true } as Partial<ShopOrder>)
-      } catch {
-        // 修复失败不影响支付流程
-      }
-      // 刷新余额
-      loadUserBalance()
-    } catch (err: any) {
-      throw new Error(err.message || '余额支付失败')
-    }
-  }
-
   // 安全的数字格式化
   const formatPrice = (price: number | string): string => {
     const num = typeof price === 'string' ? parseFloat(price) : price
@@ -540,20 +491,18 @@ const CheckoutPage: React.FC = () => {
             {/*  </View>*/}
             {/*</View>*/}
 
-            {/* 余额支付 */}
+            {/* 货到付款 */}
             <View
               className='flex items-center py-3 px-2 rounded-lg'
               style={{ backgroundColor: payType === 0 ? '#f0fdf4' : '#f9fafb' }}
               onClick={() => setPayType(0)}
             >
-              <View className='w-8 h-8 rounded-full bg-amber-50 flex items-center justify-center mr-3'>
-                <Text className='text-sm'>余</Text>
+              <View className='w-8 h-8 rounded-full bg-blue-50 flex items-center justify-center mr-3'>
+                <Text className='text-sm'>货</Text>
               </View>
               <View className='flex-1'>
-                <Text className='text-sm text-gray-800 block'>余额支付</Text>
-                <Text className='text-xs text-gray-400 block'>
-                  {loadingBalance ? '加载中...' : `可用: ¥${parseFloat(userBalance).toFixed(2)}`}
-                </Text>
+                <Text className='text-sm text-gray-800 block'>货到付款</Text>
+                <Text className='text-xs text-gray-400 block'>商品送达后付款</Text>
               </View>
               <View
                 className='w-5 h-5 rounded-full border-2 flex items-center justify-center'
@@ -564,15 +513,6 @@ const CheckoutPage: React.FC = () => {
                 )}
               </View>
             </View>
-
-            {/* 余额不足提示 */}
-            {payType === 0 && parseFloat(userBalance) < parseFloat(totalPrice) && (
-              <View className='mt-2 px-2'>
-                <Text className='text-xs text-red-500'>
-                  余额不足，还差 ¥{(parseFloat(totalPrice) - parseFloat(userBalance)).toFixed(2)}
-                </Text>
-              </View>
-            )}
           </View>
 
           {/* 凑单推荐 */}