Improved & fixed some issues with JWT authentication.

backend/nestjs-seshat-api/src/main.ts

@@ -1,10 +1,16 @@
 import * as cookieParser from 'cookie-parser';
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
+import { ValidationPipe } from '@nestjs/common';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
   app.use(cookieParser());
+  app.useGlobalPipes(new ValidationPipe({
+    stopAtFirstError: true,
+    whitelist: true,
+    transform: true,
+  }));
   await app.listen(process.env.PORT ?? 3001);
 }
 bootstrap();