refactor: 更新WebSocket相关测试和location_broadcast模块

- 更新location_broadcast网关以支持原生WebSocket
- 修改WebSocket认证守卫和中间件
- 更新相关的测试文件和规范
- 添加WebSocket测试工具
- 完善Zulip服务的测试覆盖

技术改进:
- 统一WebSocket实现架构
- 优化性能监控和限流中间件
- 更新测试用例以适配新的WebSocket实现

src/business/location_broadcast/rate_limit.middleware.ts

@@ -29,7 +29,14 @@
  */
 
 import { Injectable, Logger } from '@nestjs/common';
-import { Socket } from 'socket.io';
+
+/**
+ * 扩展的WebSocket接口
+ */
+interface ExtendedWebSocket extends WebSocket {
+  id: string;
+  userId?: string;
+}
 
 /**
  * 限流配置接口
@@ -186,7 +193,7 @@ export class RateLimitMiddleware {
    * @param client WebSocket客户端
    * @param userId 用户ID
    */
-  handleRateLimit(client: Socket, userId: string): void {
+  handleRateLimit(client: ExtendedWebSocket, userId: string): void {
     const error = {
       type: 'error',
       code: 'RATE_LIMIT_EXCEEDED',
@@ -199,7 +206,9 @@ export class RateLimitMiddleware {
       timestamp: Date.now(),
     };
 
-    client.emit('error', error);
+    if (client.readyState === WebSocket.OPEN) {
+      client.send(JSON.stringify({ event: 'error', data: error }));
+    }
 
     this.logger.debug('发送限流错误响应', {
       userId,
@@ -330,7 +339,7 @@ export function PositionUpdateRateLimit() {
     const method = descriptor.value;
     
     descriptor.value = async function (...args: any[]) {
-      const client = args[0] as Socket & { userId?: string };
+      const client = args[0] as ExtendedWebSocket;
       const rateLimitMiddleware = new RateLimitMiddleware();
       
       if (client.userId) {