fix: 完善 API 基础设施验收

apps/api/src/main.ts

@@ -30,8 +30,12 @@ export function configureApp(app: INestApplication): void {
   });
 }
 
-async function bootstrap(): Promise<void> {
-  const app = await NestFactory.create(AppModule);
+type AppFactory = () => Promise<INestApplication>;
+
+export async function bootstrap(
+  appFactory: AppFactory = () => NestFactory.create(AppModule),
+): Promise<void> {
+  const app = await appFactory();
   configureApp(app);
   app.enableShutdownHooks();
   await app.listen(Number(process.env.PORT ?? 3001), "0.0.0.0");