feat: add transit microservice and supervisor dashboard

backend-transit/src/main.ts

@@ -0,0 +1,18 @@
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+import { ValidationPipe } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  const cfg = app.get(ConfigService);
+  
+  app.useGlobalPipes(new ValidationPipe({ whitelist: true, transform: true }));
+  app.enableCors();
+  
+  // Start the standalone transit API
+  const port = cfg.get<number>('PORT') || 4020;
+  await app.listen(port);
+  console.log(`Transit Microservice running on port ${port}`);
+}
+bootstrap();