feat(pricing): 新增优惠券属性门槛校验功能

- 在PriceCouponConfig实体中新增requiredAttributeKeys字段，用于配置优惠券使用门槛
- 修改MyBatis Mapper SQL语句，支持新字段的插入和更新操作
- 在CouponManagementServiceImpl中增加对requiredAttributeKeys的格式校验逻辑
- 更新CouponServiceImpl的优惠券适用性检查逻辑，增加属性门槛判断
- 在PriceCalculationServiceImpl中实现商品属性Key的自动计算与填充
- 优化价格计算服务中的能力缓存与属性Key构建逻辑
- 更新CLAUDE.md文档，补充属性门槛特性的说明

src/main/java/com/ycwl/basic/pricing/mapper/PriceCouponConfigMapper.java

@@ -52,9 +52,9 @@ public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
      */
     @Insert("INSERT INTO price_coupon_config (coupon_name, coupon_type, discount_value, min_amount, " +
             "max_discount, applicable_products, total_quantity, used_quantity, valid_from, valid_until, " +
-            "is_active, scenic_id, create_time, update_time) VALUES " +
+            "required_attribute_keys, is_active, scenic_id, create_time, update_time) VALUES " +
             "(#{couponName}, #{couponType}, #{discountValue}, #{minAmount}, #{maxDiscount}, " +
-            "#{applicableProducts}, #{totalQuantity}, #{usedQuantity}, #{validFrom}, #{validUntil}, " +
+            "#{applicableProducts}, #{requiredAttributeKeys}, #{totalQuantity}, #{usedQuantity}, #{validFrom}, #{validUntil}, " +
             "#{isActive}, #{scenicId}, NOW(), NOW())")
     int insertCoupon(PriceCouponConfig coupon);
     
@@ -63,7 +63,7 @@ public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
      */
     @Update("UPDATE price_coupon_config SET coupon_name = #{couponName}, coupon_type = #{couponType}, " +
             "discount_value = #{discountValue}, min_amount = #{minAmount}, max_discount = #{maxDiscount}, " +
-            "applicable_products = #{applicableProducts}, total_quantity = #{totalQuantity}, " +
+            "applicable_products = #{applicableProducts}, required_attribute_keys = #{requiredAttributeKeys}, total_quantity = #{totalQuantity}, " +
             "valid_from = #{validFrom}, valid_until = #{validUntil}, is_active = #{isActive}, " +
             "scenic_id = #{scenicId}, update_time = NOW() WHERE id = #{id}")
     int updateCoupon(PriceCouponConfig coupon);