feat(quota): 新增用户额度总计模块

增加用户免费体验额度配置，支持新用户注册时的额度分配功能

src/main/java/com/yolo/keyborad/mapper/KeyboardUserQuotaTotalMapper.java

@@ -0,0 +1,12 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.KeyboardUserQuotaTotal;
+
+/*
+* @author: ziin
+* @date: 2025/12/16 16:00
+*/
+    
+public interface KeyboardUserQuotaTotalMapper extends BaseMapper<KeyboardUserQuotaTotal> {
+}

src/main/java/com/yolo/keyborad/model/entity/KeyboardUserQuotaTotal.java

@@ -0,0 +1,64 @@
+package com.yolo.keyborad.model.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import io.swagger.v3.oas.annotations.media.Schema;
+import java.util.Date;
+import lombok.Data;
+
+/*
+* @author: ziin
+* @date: 2025/12/16 16:00
+*/
+    
+/**
+ * 用户免费功能永久总次数额度表（所有功能共用）
+ */
+@Schema(description="用户免费功能永久总次数额度表（所有功能共用）")
+@Data
+@TableName(value = "keyboard_user_quota_total")
+public class KeyboardUserQuotaTotal {
+    /**
+     * 用户唯一ID，对应系统用户
+     */
+    @TableId(value = "user_id", type = IdType.AUTO)
+    @Schema(description="用户唯一ID，对应系统用户")
+    private Long userId;
+
+    /**
+     * 免费体验的永久总次数上限（可通过运营活动增加）
+     */
+    @TableField(value = "total_quota")
+    @Schema(description="免费体验的永久总次数上限（可通过运营活动增加）")
+    private Integer totalQuota;
+
+    /**
+     * 已消耗的免费次数
+     */
+    @TableField(value = "used_quota")
+    @Schema(description="已消耗的免费次数")
+    private Integer usedQuota;
+
+    /**
+     * 乐观锁版本号（并发控制预留字段）
+     */
+    @TableField(value = "version")
+    @Schema(description="乐观锁版本号（并发控制预留字段）")
+    private Integer version;
+
+    /**
+     * 首次创建额度记录的时间（通常为注册时间）
+     */
+    @TableField(value = "created_at")
+    @Schema(description="首次创建额度记录的时间（通常为注册时间）")
+    private Date createdAt;
+
+    /**
+     * 最近一次额度发生变化的时间（消耗或赠送）
+     */
+    @TableField(value = "updated_at")
+    @Schema(description="最近一次额度发生变化的时间（消耗或赠送）")
+    private Date updatedAt;
+}

src/main/java/com/yolo/keyborad/service/KeyboardUserQuotaTotalService.java

@@ -0,0 +1,13 @@
+package com.yolo.keyborad.service;
+
+import com.yolo.keyborad.model.entity.KeyboardUserQuotaTotal;
+import com.baomidou.mybatisplus.extension.service.IService;
+    /*
+* @author: ziin
+* @date: 2025/12/16 16:00
+*/
+    
+public interface KeyboardUserQuotaTotalService extends IService<KeyboardUserQuotaTotal>{
+
+
+}

src/main/java/com/yolo/keyborad/service/impl/KeyboardUserQuotaTotalServiceImpl.java

@@ -0,0 +1,18 @@
+package com.yolo.keyborad.service.impl;
+
+import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.annotation.Autowired;
+import java.util.List;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.yolo.keyborad.model.entity.KeyboardUserQuotaTotal;
+import com.yolo.keyborad.mapper.KeyboardUserQuotaTotalMapper;
+import com.yolo.keyborad.service.KeyboardUserQuotaTotalService;
+/*
+* @author: ziin
+* @date: 2025/12/16 16:00
+*/
+    
+@Service
+public class KeyboardUserQuotaTotalServiceImpl extends ServiceImpl<KeyboardUserQuotaTotalMapper, KeyboardUserQuotaTotal> implements KeyboardUserQuotaTotalService{
+
+}