{"agent":"claude","input":"A Grafana alert fired for this NestJS service; its payload follows this prompt. Use the Grafana connection to read the alert rule, run its Prometheus query around the firing time, and query the Loki error logs for the same window. Follow the stack trace to the cause in the auth and users modules, add a Jest test that reproduces it, fix it, and run npm test, npm run lint and npm run build. Open a pull request that includes the PromQL and LogQL queries, the log lines behind the diagnosis, and the test output before and after the fix. If the evidence does not point at code, say what it points at instead.","resources":[{"url":"https://github.com/your-org/your-app"}]}