feat(用户余额): 为用户余额记录添加剩余余额字段

在用户余额记录表中添加 remain_amount 字段，用于记录本次充值后的剩余余额。同时在 DTO 和 Entity 中添加对应字段，保持数据模型一致性。

agileboot-domain/src/main/java/com/agileboot/domain/ab98/balance/db/UserBalanceRecordEntity.java

@@ -63,6 +63,10 @@ public class UserBalanceRecordEntity extends BaseEntity<UserBalanceRecordEntity>
     @TableField("biz_order_id")
     private String bizOrderId;
 
+    @ApiModelProperty("本次充值剩余余额（单位：分）")
+    @TableField("remain_amount")
+    private Integer remainAmount;
+
 
     @Override
     public Serializable pkVal() {

agileboot-domain/src/main/java/com/agileboot/domain/ab98/balance/dto/UserBalanceRecordDTO.java

@@ -89,6 +89,9 @@ public class UserBalanceRecordDTO {
     @ExcelColumn(name = "业务系统订单ID")
     private String bizOrderId;
 
+    @ExcelColumn(name = "剩余余额(分)")
+    private Integer remainAmount;
+
     @ExcelColumn(name = "创建时间")
     private String createTimeStr;
 

sql/20250703.sql

@@ -20,5 +20,5 @@ CREATE TABLE `user_balance_record` (
 ALTER TABLE `ab98_user`
 ADD COLUMN `ab98_balance` INT NOT NULL DEFAULT 0 COMMENT '用户余额（单位：分）';
 
-ALTER TABLE `ab98_user`
+ALTER TABLE `user_balance_record`
-ADD COLUMN `ab98_balance` INT NOT NULL DEFAULT 0 COMMENT '用户余额（单位：分）';
+ADD COLUMN `remain_amount` INT NOT NULL DEFAULT 0 COMMENT '本次充值剩余余额（单位：分）';