fix(pricing): 调整用户优惠券查询逻辑

- 修改查询条件，移除状态限制，支持查询所有状态的优惠券记录
- 更新注释说明，明确查询目的为检查用户是否领取过指定优惠券

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

@@ -29,10 +29,10 @@ public interface PriceCouponClaimRecordMapper extends BaseMapper<PriceCouponClai
     List<PriceCouponClaimRecord> selectUserAvailableCoupons(Long userId);
     
     /**
-     * 查询用户特定优惠券记录
+     * 查询用户特定优惠券记录（检查是否领取过，不限状态）
      */
     @Select("SELECT * FROM price_coupon_claim_record " +
-            "WHERE user_id = #{userId} AND coupon_id = #{couponId} AND status = 'CLAIMED'")
+            "WHERE user_id = #{userId} AND coupon_id = #{couponId}")
     PriceCouponClaimRecord selectUserCouponRecord(@Param("userId") Long userId, 
                                                   @Param("couponId") Long couponId);