feat(user): 新增邮箱注册与验证码发送功能

- 新增 UserRegisterDTO 及 /user/register 接口
- 集成 MailerSend，异步发送 6 位验证码邮件
- 添加 RedisUtil 缓存验证码 10 分钟
- 补充 SEND_MAIL_FAILED、CONFIRM_PASSWORD_NOT_MATCH 错误码
- 关闭 Spring Security CSRF 与表单登录，放行 /user/register
- AppleService 移除 @AllArgsConstructor，改用 @Resource 注入

src/main/resources/mapper/KeyboardUserCharacterMapper.xml

@@ -1,16 +1,40 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.yolo.keyborad.mapper.KeyboardUserCharacterMapper">
-  <resultMap id="BaseResultMap" type="com.yolo.keyborad.model.entity.KeyboardUserCharacter">
-    <!--@Table keyboard_user_character-->
-    <id column="id" jdbcType="BIGINT" property="id" />
-    <result column="character_id" jdbcType="BIGINT" property="characterId" />
-    <result column="deleted" jdbcType="BOOLEAN" property="deleted" />
-    <result column="created_at" jdbcType="TIMESTAMP" property="createdAt" />
-    <result column="updated_at" jdbcType="TIMESTAMP" property="updatedAt" />
-    <result column="user_id" jdbcType="BIGINT" property="userId" />
-  </resultMap>
-  <sql id="Base_Column_List">
-    id, character_id, deleted, created_at, updated_at, user_id
-  </sql>
+
+    <resultMap id="KeyboardUserCharacterVOMap"
+               type="com.yolo.keyborad.model.vo.character.KeyboardUserCharacterVO">
+
+        <id column="id" property="id"/>
+
+        <!-- keyboard_character 表的列名，根据你的实际字段调整 -->
+        <result column="character_name" property="characterName"/>
+
+        <!-- 关键：ARRAY 字段明确指定 jdbcType + typeHandler -->
+        <result column="sort"
+                jdbcType="ARRAY"
+                typeHandler="org.apache.ibatis.type.ArrayTypeHandler"/>
+        <result column="emoji" property="emoji"/>
+    </resultMap>
+
+    <update id="updateSortByIdAndUserId">
+        UPDATE keyboard_user_character
+        SET sort = #{sort,jdbcType=ARRAY}
+        where user_id = #{userId}
+        AND deleted = FALSE
+    </update>
+
+
+    <select id="selectByUserId"
+            resultMap="KeyboardUserCharacterVOMap">
+        SELECT
+        kuc.id,
+        kc.character_name,
+        kuc.sort,
+        kuc.emoji
+        FROM keyboard_user_character AS kuc
+        LEFT JOIN keyboard_character AS kc ON kuc.character_id = kc.id
+        WHERE kuc.user_id = #{loginId}
+        AND kuc.deleted = FALSE
+    </select>
 </mapper>