修复WebSocket身份认证问题

- 添加WebSocketAuthInterceptor处理token认证
- 修改WebSocket连接逻辑，支持token传递
- 统一用户身份识别，确保登录用户使用USER类型
- 修复前端环境变量配置，统一WebSocket URL
- 添加Token测试页面用于验证功能
- 更新聊天消息处理逻辑，正确识别用户身份

解决了登录用户发送消息时同时保存GUEST和USER两种类型数据的问题

backend-single/src/main/java/com/emotion/config/WebSocketConfig.java

@@ -1,6 +1,9 @@
 package com.emotion.config;
 
+import com.emotion.interceptor.WebSocketAuthInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.messaging.simp.config.ChannelRegistration;
 import org.springframework.messaging.simp.config.MessageBrokerRegistry;
 import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
 import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
@@ -16,6 +19,9 @@ import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerCo
 @EnableWebSocketMessageBroker
 public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
 
+    @Autowired
+    private WebSocketAuthInterceptor webSocketAuthInterceptor;
+
     @Override
     public void configureMessageBroker(MessageBrokerRegistry config) {
         // 启用简单消息代理，并设置消息代理的前缀
@@ -39,4 +45,10 @@ public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
         registry.addEndpoint("/ws/chat")
                 .setAllowedOriginPatterns("*");
     }
+
+    @Override
+    public void configureClientInboundChannel(ChannelRegistration registration) {
+        // 添加WebSocket认证拦截器
+        registration.interceptors(webSocketAuthInterceptor);
+    }
 }