feat(pricing): 添加券码管理和使用功能

- 新增券码批次配置和券码实体
- 实现券码创建、领取、使用等接口
- 添加券码状态和优惠类型枚举
- 优化价格计算逻辑，支持券码优惠
- 新增优惠检测和应用相关功能

src/main/java/com/ycwl/basic/pricing/entity/BaseEntity.java

@@ -4,7 +4,7 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import lombok.Data;
 
-import java.time.LocalDateTime;
+import java.util.Date;
 
 /**
  * 基础实体类
@@ -15,7 +15,15 @@ public class BaseEntity {
     @TableId(type = IdType.AUTO)
     private Long id;
     
-    private LocalDateTime createdTime;
+    private Date createdTime;
     
-    private LocalDateTime updatedTime;
+    private Date updatedTime;
+    
+    private Long createBy;
+    
+    private Long updateBy;
+    
+    private Integer deleted;
+    
+    private Date deletedAt;
 }

src/main/java/com/ycwl/basic/pricing/entity/PriceCouponClaimRecord.java

@@ -5,7 +5,7 @@ import com.ycwl.basic.pricing.enums.CouponStatus;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 
-import java.time.LocalDateTime;
+import java.util.Date;
 
 /**
  * 优惠券领用记录实体
@@ -28,12 +28,12 @@ public class PriceCouponClaimRecord extends BaseEntity {
     /**
      * 领取时间
      */
-    private LocalDateTime claimTime;
+    private Date claimTime;
     
     /**
      * 使用时间
      */
-    private LocalDateTime useTime;
+    private Date useTime;
     
     /**
      * 订单ID

src/main/java/com/ycwl/basic/pricing/entity/PriceVoucherBatchConfig.java

@@ -0,0 +1,72 @@
+package com.ycwl.basic.pricing.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+/**
+ * 券码批次配置实体
+ */
+@Data
+@EqualsAndHashCode(callSuper = true)
+@TableName("price_voucher_batch_config")
+public class PriceVoucherBatchConfig extends BaseEntity {
+    
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+    
+    /**
+     * 券码批次名称
+     */
+    private String batchName;
+    
+    /**
+     * 景区ID
+     */
+    private Long scenicId;
+    
+    /**
+     * 推客ID
+     */
+    private Long brokerId;
+    
+    /**
+     * 优惠类型：0=全场免费，1=商品降价，2=商品打折
+     */
+    private Integer discountType;
+    
+    /**
+     * 优惠值（降价金额或折扣百分比）
+     */
+    private BigDecimal discountValue;
+    
+    /**
+     * 总券码数量
+     */
+    private Integer totalCount;
+    
+    /**
+     * 已使用数量
+     */
+    private Integer usedCount;
+    
+    /**
+     * 已领取数量
+     */
+    private Integer claimedCount;
+    
+    /**
+     * 状态：0=禁用，1=启用
+     */
+    private Integer status;
+    
+    /**
+     * 创建人ID
+     */
+    private Long createBy;
+}

src/main/java/com/ycwl/basic/pricing/entity/PriceVoucherCode.java

@@ -0,0 +1,61 @@
+package com.ycwl.basic.pricing.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.util.Date;
+
+/**
+ * 券码实体
+ */
+@Data
+@EqualsAndHashCode(callSuper = true)
+@TableName("price_voucher_code")
+public class PriceVoucherCode extends BaseEntity {
+    
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+    
+    /**
+     * 批次ID
+     */
+    private Long batchId;
+    
+    /**
+     * 景区ID
+     */
+    private Long scenicId;
+    
+    /**
+     * 券码
+     */
+    private String code;
+    
+    /**
+     * 状态：0=未领取，1=已领取未使用，2=已使用
+     */
+    private Integer status;
+    
+    /**
+     * 领取人faceId
+     */
+    private Long faceId;
+    
+    /**
+     * 领取时间
+     */
+    private Date claimedTime;
+    
+    /**
+     * 使用时间
+     */
+    private Date usedTime;
+    
+    /**
+     * 使用备注
+     */
+    private String remark;
+}