feat(theme): 购买主题后自动写入用户主题表

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

@@ -0,0 +1,12 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.KeyboardUserThemes;
+
+/*
+* @author: ziin
+* @date: 2025/12/11 13:31
+*/
+    
+public interface KeyboardUserThemesMapper extends BaseMapper<KeyboardUserThemes> {
+}