v3.5.4版本提交，修改api

server/dukang-api/src/modules/catalog/catalog.service.ts

@@ -12,7 +12,7 @@ import {
   mapSkuDto,
   mapSpecAttrsDto,
   pickDisplaySku,
-  resolveOrderSku,
+  resolveOrderSale,
 } from './product-sku.util';
 
 export type CatalogViewer = {
@@ -204,7 +204,7 @@ export class CatalogService {
     });
   }
 
-  /** 下单前校验：白名单商品仅全局测试白名单手机号可买；返回 SPU + 解析后的 SKU */
+  /** 下单前校验：白名单商品仅全局测试白名单手机号可买；无 SKU 时回落 SPU 字段 */
   async assertPurchasable(
     productId: bigint,
     viewerPhone?: string | null,
@@ -224,8 +224,8 @@ export class CatalogService {
         throw new BadRequestException('该商品暂不对当前账号开放');
       }
     }
-    const sku = resolveOrderSku(product.skus, skuId);
-    return { product, sku };
+    const sale = resolveOrderSale(product, product.skus ?? [], skuId);
+    return { product, sale };
   }
 
   async resolveUserPhone(userId: bigint): Promise<string | null> {