feat(M06-A): 建立MQTT连接与Broker基础

backend/tests/payment.test.mjs

@@ -5,6 +5,8 @@ import { signAccessToken } from '../dist/auth/jwt.js';
 
 assert.equal(loadConfig({
   NODE_ENV: 'production',
+  QIPAI_MQTT_USERNAME: 'backend-test',
+  QIPAI_MQTT_PASSWORD: 'not-a-real-secret',
   QIPAI_JWT_SECRET: 'production-test-secret-that-is-long-enough',
   QIPAI_TEST_PAYMENT_ENABLED: 'true'
 }).payment.testAdapterEnabled, false);