feat(cc-052): run drizzle migrations at startup

src/main.ts

@@ -4,7 +4,9 @@ import { ValidationPipe } from '@nestjs/common';
 import { NestFactory } from '@nestjs/core';
 import { Logger } from 'nestjs-pino';
 import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
+import { migrate } from 'drizzle-orm/node-postgres/migrator';
 import { AppModule } from './app.module';
+import { db } from './db/client';
 
 const REQUIRED_ENV_VARS = [
   'DATABASE_URL',
@@ -26,6 +28,9 @@ function validateEnv(): void {
 async function bootstrap() {
   validateEnv();
 
+  // Apply pending DB migrations before accepting traffic
+  await migrate(db, { migrationsFolder: './drizzle' });
+
   const app = await NestFactory.create(AppModule, { bufferLogs: true });
   app.useLogger(app.get(Logger));
   app.use(helmet());