feat(task1): restructure directories for turborepo monorepo

- Move backend/ to apps/server/ via git mv
- Move frontend/ to apps/admin/ via git mv
- Create packages/typescript-config/ with base, nestjs, and react-vite presets

apps/server/src/students/dto/student.dto.ts

@@ -0,0 +1,80 @@
+import { IsString, IsOptional, IsEnum } from 'class-validator';
+
+export class CreateStudentDto {
+  @IsString()
+  name: string;
+
+  @IsOptional()
+  @IsString()
+  phone?: string;
+
+  @IsOptional()
+  @IsString()
+  idNumber?: string;
+
+  @IsOptional()
+  @IsString()
+  gender?: string;
+
+  @IsOptional()
+  @IsString()
+  ethnicity?: string;
+
+  @IsOptional()
+  @IsString()
+  emergencyContact?: string;
+
+  @IsOptional()
+  @IsString()
+  emergencyPhone?: string;
+
+  @IsOptional()
+  @IsString()
+  organization?: string;
+
+  @IsOptional()
+  @IsString()
+  supervisor?: string;
+}
+
+export class UpdateStudentDto {
+  @IsOptional()
+  @IsString()
+  name?: string;
+
+  @IsOptional()
+  @IsString()
+  phone?: string;
+
+  @IsOptional()
+  @IsString()
+  idNumber?: string;
+
+  @IsOptional()
+  @IsString()
+  gender?: string;
+
+  @IsOptional()
+  @IsString()
+  ethnicity?: string;
+
+  @IsOptional()
+  @IsString()
+  emergencyContact?: string;
+
+  @IsOptional()
+  @IsString()
+  emergencyPhone?: string;
+
+  @IsOptional()
+  @IsString()
+  organization?: string;
+
+  @IsOptional()
+  @IsString()
+  supervisor?: string;
+
+  @IsOptional()
+  @IsEnum(['active', 'graduated', 'withdrawn'])
+  status?: string;
+}