重构项目结构：迁移到单体架构并优化代码组织

- 删除分布式架构相关文件和配置
- 将backend-distributed重命名为backend保留分布式代码作为参考
- 优化backend-single单体架构实现
- 添加Coze API集成相关文档和测试
- 清理项目根目录的部署脚本和配置文件
- 更新WebSocket和消息服务实现
- 完善认证服务和密码加密功能

backend/emotion-auth/src/main/resources/mapper/UserMapper.xml

@@ -0,0 +1,36 @@
+<?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.emotionmuseum.auth.mapper.UserMapper">
+
+    <!-- 根据账号查询用户 -->
+    <select id="selectByAccount" resultType="com.emotionmuseum.auth.entity.User">
+        SELECT * FROM user
+        WHERE account = #{account} AND is_deleted = 0
+    </select>
+
+    <!-- 根据邮箱查询用户 -->
+    <select id="selectByEmail" resultType="com.emotionmuseum.auth.entity.User">
+        SELECT * FROM user
+        WHERE email = #{email} AND is_deleted = 0
+    </select>
+
+    <!-- 根据手机号查询用户 -->
+    <select id="selectByPhone" resultType="com.emotionmuseum.auth.entity.User">
+        SELECT * FROM user
+        WHERE phone = #{phone} AND is_deleted = 0
+    </select>
+
+    <!-- 根据第三方登录信息查询用户 -->
+    <select id="selectByOAuth" resultType="com.emotionmuseum.auth.entity.User">
+        SELECT * FROM user
+        WHERE oauth_platform = #{platform} AND oauth_id = #{oauthId} AND is_deleted = 0
+    </select>
+
+    <!-- 更新最后活跃时间 -->
+    <update id="updateLastActiveTime">
+        UPDATE user
+        SET last_active_time = NOW(), update_time = NOW()
+        WHERE id = #{userId} AND is_deleted = 0
+    </update>
+
+</mapper>