增加登陆验证码，24小时流量统计

springboot-backend/src/main/java/com/admin/mapper/StatisticsFlowMapper.java

@@ -0,0 +1,16 @@
+package com.admin.mapper;
+
+import com.admin.entity.StatisticsFlow;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+/**
+ * <p>
+ *  Mapper 接口
+ * </p>
+ *
+ * @author QAQ
+ * @since 2025-08-14
+ */
+public interface StatisticsFlowMapper extends BaseMapper<StatisticsFlow> {
+
+}