feat(backend): implement v2 domain slice and live smoke

backend/query-api/src/app.js

@@ -4,10 +4,11 @@ import pinoHttp from 'pino-http';
 import { requestContext } from './middleware/request-context.js';
 import { errorHandler, notFoundHandler } from './middleware/error-handler.js';
 import { healthRouter } from './routes/health.js';
+import { createQueryRouter } from './routes/query.js';
 
 const logger = pino({ level: process.env.LOG_LEVEL || 'info' });
 
-export function createApp() {
+export function createApp(options = {}) {
   const app = express();
 
   app.use(requestContext);
@@ -20,6 +21,7 @@ export function createApp() {
   app.use(express.json({ limit: '2mb' }));
 
   app.use(healthRouter);
+  app.use('/query', createQueryRouter(options.queryService));
 
   app.use(notFoundHandler);
   app.use(errorHandler);