feat: 添加JWT令牌刷新功能

- 新增 @nestjs/jwt 和 jsonwebtoken 依赖包
- 实现 refreshAccessToken 方法支持令牌续期
- 添加 RefreshTokenDto 和 RefreshTokenResponseDto
- 新增 /auth/refresh-token 接口
- 完善令牌刷新的限流和超时控制
- 增加相关单元测试覆盖
- 优化错误处理和日志记录

src/business/zulip/zulip.service.spec.ts

@@ -40,6 +40,7 @@ import {
   ZulipClientInstance,
   SendMessageResult,
 } from '../../core/zulip/interfaces/zulip-core.interfaces';
+import { ApiKeySecurityService } from '../../core/zulip/services/api_key_security.service';
 
 describe('ZulipService', () => {
   let service: ZulipService;
@@ -158,6 +159,19 @@ describe('ZulipService', () => {
           provide: 'ZULIP_CONFIG_SERVICE',
           useValue: mockConfigManager,
         },
+        {
+          provide: ApiKeySecurityService,
+          useValue: {
+            extractApiKey: jest.fn(),
+            validateApiKey: jest.fn(),
+            encryptApiKey: jest.fn(),
+            decryptApiKey: jest.fn(),
+            getApiKey: jest.fn().mockResolvedValue({
+              success: true,
+              apiKey: 'lCPWCPfGh7WUHxwN56GF8oYXOpqNfGF8',
+            }),
+          },
+        },
       ],
     }).compile();