Initial commit: NestJS backend for Child Gold Land

Co-authored-by: Cursor <cursoragent@cursor.com>

src/auth/dto/login.dto.ts

@@ -0,0 +1,9 @@
+import { IsString } from 'class-validator'
+
+export class LoginDto {
+  @IsString()
+  username!: string
+
+  @IsString()
+  password!: string
+}

src/auth/dto/register.dto.ts

@@ -0,0 +1,13 @@
+import { IsOptional, IsString } from 'class-validator'
+
+export class RegisterDto {
+  @IsString()
+  username!: string
+
+  @IsString()
+  password!: string
+
+  @IsOptional()
+  @IsString()
+  name?: string
+}