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-single/src/main/java/com/emotion/controller/MessageController.java

@@ -90,15 +90,16 @@ public class MessageController {
      */
     @PostMapping
     public Result<MessageResponse> create(@Valid @RequestBody MessageCreateRequest request) {
-        Message message = messageService.createMessage(
-                request.getConversationId(),
-                request.getUserId(),
-                request.getContent(),
-                request.getContentType(),
-                request.getSenderType(),
-                request.getSenderId()
-        );
-        return Result.success(convertToResponse(message));
+        Message message = new Message();
+        message.setConversationId(request.getConversationId());
+        message.setCreateBy(request.getUserId());
+        message.setContent(request.getContent());
+        message.setType(request.getContentType());
+        message.setSender(request.getSenderType());
+        // 可以根据需要设置其他字段
+
+        Message savedMessage = messageService.createMessage(message);
+        return Result.success(convertToResponse(savedMessage));
     }
 
     /**