feat: 添加JWT认证系统和Zulip用户管理服务

- 新增JWT认证守卫(JwtAuthGuard)和当前用户装饰器(CurrentUser)
- 添加JWT使用示例和完整的认证流程文档
- 实现Zulip用户管理服务，支持用户查询、验证和管理
- 实现Zulip用户注册服务，支持新用户创建和注册流程
- 添加完整的单元测试覆盖
- 新增真实环境测试脚本，验证Zulip API集成
- 更新.gitignore，排除.kiro目录

主要功能:
- JWT令牌验证和用户信息提取
- 用户存在性检查和信息获取
- Zulip API集成和错误处理
- 完整的测试覆盖和文档

src/core/zulip/services/user_registration.service.spec.ts

@@ -0,0 +1,188 @@
+/**
+ * Zulip用户注册服务测试
+ * 
+ * 功能描述：
+ * - 测试UserRegistrationService的核心功能
+ * - 测试用户注册流程和验证逻辑
+ * - 测试错误处理和边界情况
+ * 
+ * @author angjustinl
+ * @version 1.0.0
+ * @since 2025-01-06
+ */
+
+import { Test, TestingModule } from '@nestjs/testing';
+import { UserRegistrationService, UserRegistrationRequest } from './user_registration.service';
+import { IZulipConfigService } from '../interfaces/zulip-core.interfaces';
+
+describe('UserRegistrationService', () => {
+  let service: UserRegistrationService;
+  let mockConfigService: jest.Mocked<IZulipConfigService>;
+
+  beforeEach(async () => {
+    // 创建模拟的配置服务
+    mockConfigService = {
+      getZulipConfig: jest.fn().mockReturnValue({
+        zulipServerUrl: 'https://test.zulip.com',
+        zulipBotEmail: 'bot@test.com',
+        zulipBotApiKey: 'test-api-key',
+      }),
+      getMapIdByStream: jest.fn(),
+      getStreamByMap: jest.fn(),
+      getMapConfig: jest.fn(),
+      hasMap: jest.fn(),
+      getAllMapIds: jest.fn(),
+      getMapConfigByStream: jest.fn(),
+      getAllStreams: jest.fn(),
+      hasStream: jest.fn(),
+      findObjectByTopic: jest.fn(),
+      getObjectsInMap: jest.fn(),
+      getTopicByObject: jest.fn(),
+      findNearbyObject: jest.fn(),
+      reloadConfig: jest.fn(),
+      validateConfig: jest.fn(),
+      getAllMapConfigs: jest.fn(),
+      getConfigStats: jest.fn(),
+      getConfigFilePath: jest.fn(),
+      configFileExists: jest.fn(),
+      enableConfigWatcher: jest.fn(),
+      disableConfigWatcher: jest.fn(),
+      isConfigWatcherEnabled: jest.fn(),
+      getFullConfiguration: jest.fn(),
+      updateConfigValue: jest.fn(),
+      exportMapConfig: jest.fn(),
+    } as jest.Mocked<IZulipConfigService>;
+
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        UserRegistrationService,
+        {
+          provide: 'ZULIP_CONFIG_SERVICE',
+          useValue: mockConfigService,
+        },
+      ],
+    }).compile();
+
+    service = module.get<UserRegistrationService>(UserRegistrationService);
+  });
+
+  it('应该正确初始化服务', () => {
+    expect(service).toBeDefined();
+  });
+
+  describe('registerUser - 用户注册', () => {
+    it('应该成功注册有效用户', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'Test User',
+        password: 'password123',
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(true);
+      expect(result.email).toBe(request.email);
+      expect(result.userId).toBeDefined();
+      expect(result.apiKey).toBeDefined();
+      expect(result.error).toBeUndefined();
+    });
+
+    it('应该拒绝无效邮箱', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'invalid-email',
+        fullName: 'Test User',
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('邮箱格式无效');
+    });
+
+    it('应该拒绝空邮箱', async () => {
+      const request: UserRegistrationRequest = {
+        email: '',
+        fullName: 'Test User',
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('邮箱不能为空');
+    });
+
+    it('应该拒绝空用户名', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: '',
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('用户全名不能为空');
+    });
+
+    it('应该拒绝过短的用户名', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'A',
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('用户全名至少需要2个字符');
+    });
+
+    it('应该拒绝过长的用户名', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'A'.repeat(101), // 101个字符
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('用户全名不能超过100个字符');
+    });
+
+    it('应该拒绝过短的密码', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'Test User',
+        password: '123', // 只有3个字符
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('密码至少需要6个字符');
+    });
+
+    it('应该接受没有密码的注册', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'Test User',
+        // 不提供密码
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(true);
+    });
+
+    it('应该拒绝过长的短名称', async () => {
+      const request: UserRegistrationRequest = {
+        email: 'test@example.com',
+        fullName: 'Test User',
+        shortName: 'A'.repeat(51), // 51个字符
+      };
+
+      const result = await service.registerUser(request);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('短名称不能超过50个字符');
+    });
+  });
+});