chore: strengthen backend eslint profile

src/main.ts

@@ -3,18 +3,19 @@ import {
   INestApplication,
   ValidationPipe,
 } from '@nestjs/common';
-import { NestFactory } from '@nestjs/core';
-import cookieParser from 'cookie-parser';
 import { ConfigService } from '@nestjs/config';
+import { NestFactory } from '@nestjs/core';
 import { SwaggerModule } from '@nestjs/swagger';
-import { API_PREFIX, createOpenApiDocument } from './openapi';
+import cookieParser from 'cookie-parser';
 import { Logger } from 'nestjs-pino';
+
 import { AppModule } from './app.module';
 import { HttpExceptionFilter } from './common/filters/http-exception.filter';
 import { RequestLoggingMiddleware } from './common/logging/request-logging.middleware';
 import { StructuredLogger } from './common/logging/structured-logger.service';
 import { Environment } from './config/env.validation';
 import { shouldExposeSwagger } from './config/swagger.config';
+import { API_PREFIX, createOpenApiDocument } from './openapi';
 
 export function configureApp(app: INestApplication): void {
   const config = app.get<ConfigService<Environment, true>>(ConfigService);
@@ -32,6 +33,7 @@ export function configureApp(app: INestApplication): void {
   app.use(requestLogging.use.bind(requestLogging));
   app.useGlobalPipes(
     new ValidationPipe({
+      forbidUnknownValues: true,
       transform: true,
       whitelist: true,
       validationError: { target: false, value: false },