refactor：项目架构重构和命名规范化

- 统一文件命名为snake_case格式（kebab-case  snake_case）
- 重构zulip模块为zulip_core，明确Core层职责
- 重构user-mgmt模块为user_mgmt，统一命名规范
- 调整模块依赖关系，优化架构分层
- 删除过时的文件和目录结构
- 更新相关文档和配置文件

本次重构涉及大量文件重命名和模块重组，
旨在建立更清晰的项目架构和统一的命名规范。

src/business/admin/admin.service.spec.ts

@@ -1,8 +1,9 @@
-import { NotFoundException } from '@nestjs/common';
+import { NotFoundException, BadRequestException } from '@nestjs/common';
 import { AdminService } from './admin.service';
 import { AdminCoreService } from '../../core/admin_core/admin_core.service';
 import { LogManagementService } from '../../core/utils/logger/log_management.service';
 import { Users } from '../../core/db/users/users.entity';
+import { UserStatus } from '../user_mgmt/user_status.enum';
 
 describe('AdminService', () => {
   let service: AdminService;
@@ -15,6 +16,7 @@ describe('AdminService', () => {
   const usersServiceMock = {
     findAll: jest.fn(),
     findOne: jest.fn(),
+    update: jest.fn(),
   };
 
   const logManagementServiceMock: Pick<LogManagementService, 'getRuntimeLogTail' | 'getLogDirAbsolutePath'> = {
@@ -156,4 +158,111 @@ describe('AdminService', () => {
     expect(service.getLogDirAbsolutePath()).toBe('/abs/logs');
     expect(logManagementServiceMock.getLogDirAbsolutePath).toHaveBeenCalled();
   });
+
+  // 测试新增的用户状态管理方法
+  describe('updateUserStatus', () => {
+    const mockUser = {
+      id: BigInt(1),
+      username: 'testuser',
+      status: UserStatus.ACTIVE
+    } as unknown as Users;
+
+    it('should update user status successfully', async () => {
+      usersServiceMock.findOne.mockResolvedValue(mockUser);
+      usersServiceMock.update.mockResolvedValue({ ...mockUser, status: UserStatus.INACTIVE });
+
+      const result = await service.updateUserStatus(BigInt(1), { status: UserStatus.INACTIVE, reason: 'test' });
+
+      expect(result.success).toBe(true);
+      expect(result.message).toBe('用户状态修改成功');
+    });
+
+    it('should throw NotFoundException when user not found', async () => {
+      usersServiceMock.findOne.mockResolvedValue(null);
+
+      await expect(service.updateUserStatus(BigInt(999), { status: UserStatus.INACTIVE, reason: 'test' }))
+        .rejects.toThrow(NotFoundException);
+    });
+
+    it('should return error when status unchanged', async () => {
+      usersServiceMock.findOne.mockResolvedValue({ ...mockUser, status: UserStatus.INACTIVE });
+
+      await expect(service.updateUserStatus(BigInt(1), { status: UserStatus.INACTIVE, reason: 'test' }))
+        .rejects.toThrow(BadRequestException);
+    });
+  });
+
+  describe('batchUpdateUserStatus', () => {
+    it('should batch update user status successfully', async () => {
+      const mockUsers = [
+        { id: BigInt(1), username: 'user1', status: UserStatus.ACTIVE },
+        { id: BigInt(2), username: 'user2', status: UserStatus.ACTIVE }
+      ] as unknown as Users[];
+
+      usersServiceMock.findOne
+        .mockResolvedValueOnce(mockUsers[0])
+        .mockResolvedValueOnce(mockUsers[1]);
+      
+      usersServiceMock.update
+        .mockResolvedValueOnce({ ...mockUsers[0], status: UserStatus.INACTIVE })
+        .mockResolvedValueOnce({ ...mockUsers[1], status: UserStatus.INACTIVE });
+
+      const result = await service.batchUpdateUserStatus({
+        userIds: ['1', '2'],
+        status: UserStatus.INACTIVE,
+        reason: 'batch test'
+      });
+
+      expect(result.success).toBe(true);
+      expect(result.data?.result.success_count).toBe(2);
+      expect(result.data?.result.failed_count).toBe(0);
+    });
+
+    it('should handle mixed success and failure', async () => {
+      usersServiceMock.findOne
+        .mockResolvedValueOnce({ id: BigInt(1), status: UserStatus.ACTIVE })
+        .mockResolvedValueOnce(null); // User not found
+
+      usersServiceMock.update.mockResolvedValueOnce({ id: BigInt(1), status: UserStatus.INACTIVE });
+
+      const result = await service.batchUpdateUserStatus({
+        userIds: ['1', '999'],
+        status: UserStatus.INACTIVE,
+        reason: 'mixed test'
+      });
+
+      expect(result.success).toBe(true);
+      expect(result.data?.result.success_count).toBe(1);
+      expect(result.data?.result.failed_count).toBe(1);
+    });
+  });
+
+  describe('getUserStatusStats', () => {
+    it('should return user status statistics', async () => {
+      const mockUsers = [
+        { status: UserStatus.ACTIVE },
+        { status: UserStatus.ACTIVE },
+        { status: UserStatus.INACTIVE },
+        { status: null } // Should default to active
+      ] as unknown as Users[];
+
+      usersServiceMock.findAll.mockResolvedValue(mockUsers);
+
+      const result = await service.getUserStatusStats();
+
+      expect(result.success).toBe(true);
+      expect(result.data?.stats.active).toBe(3); // 2 active + 1 null (defaults to active)
+      expect(result.data?.stats.inactive).toBe(1);
+      expect(result.data?.stats.total).toBe(4);
+    });
+
+    it('should handle error when getting stats', async () => {
+      usersServiceMock.findAll.mockRejectedValue(new Error('Database error'));
+
+      const result = await service.getUserStatusStats();
+
+      expect(result.success).toBe(false);
+      expect(result.error_code).toBe('USER_STATUS_STATS_FAILED');
+    });
+  });
 });