feat(backend): 商品统一价停用memberPrice(活动侧保留)

cfc-backend/src/main/java/com/etotem/cfc/dto/ProductDTO.java

@@ -93,9 +93,8 @@ public class ProductDTO {
         d.deliveryMethod = p.getDeliveryMethod();
         d.createdAt = p.getCreatedAt();
         d.updatedAt = p.getUpdatedAt();
-        // Member-aware pricing: resolve final display price based on membership level
-        // Guests (no memberLevel) see base price; members see memberPrice if applicable
-        d.price = ActivityDTO.resolveMemberPrice(p.getPrice(), p.getMemberPrice(), memberLevel);
+        // 会员体系重构：商品对所有用户统一定价（活动侧保留会员价，商品侧停用）
+        d.price = p.getPrice();
         if (d.price != null && d.price == 0) {
             d.priceLabel = "免费";
         } else {

cfc-backend/src/main/java/com/etotem/cfc/service/ProductRecommendationService.java

@@ -126,7 +126,7 @@ public class ProductRecommendationService {
             item.put("name", p.getName());
             item.put("coverImage", p.getCoverImage());
             item.put("price", p.getPrice());
-            item.put("memberPrice", p.getMemberPrice());
+            item.put("memberPrice", p.getPrice());
             item.put("productType", p.getProductType());
             item.put("source", "dimension");
             item.put("url", "/pages/discover/product-detail/product-detail?id=" + p.getId());