Initial commit: Telegram Management System

Full-stack web application for Telegram management
- Frontend: Vue 3 + Vben Admin
- Backend: NestJS
- Features: User management, group broadcast, statistics

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend-nestjs/src/modules/auth/dto/login.dto.ts

@@ -0,0 +1,15 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsNotEmpty, IsString, MinLength } from 'class-validator';
+
+export class LoginDto {
+  @ApiProperty({ description: '账号', example: 'admin' })
+  @IsNotEmpty({ message: '账号不能为空' })
+  @IsString({ message: '账号必须是字符串' })
+  account: string;
+
+  @ApiProperty({ description: '密码', example: '111111' })
+  @IsNotEmpty({ message: '密码不能为空' })
+  @IsString({ message: '密码必须是字符串' })
+  @MinLength(6, { message: '密码长度不能少于6位' })
+  password: string;
+}