Implement Monitoring & Observability (APM, Metrics, Alerting) #23
Description
Description
No monitoring infrastructure. Cannot track performance, errors, or system health. No alerts when service degrades.
Current State
Basic Winston logging only.
Problems
- No error tracking
- No performance monitoring
- No alerting
- Cannot debug production issues
Proposed Solution
Full observability stack: Sentry (errors), Prometheus/Grafana (metrics), alerts.
Acceptance Criteria
- Sentry integrated (backend + frontend)
- Prometheus metrics exported
- Grafana dashboards (response time, error rate, throughput)
- PagerDuty/Slack alerts for critical errors
- Distributed tracing (OpenTelemetry)
- Performance budgets enforced
ETA
3-4 weeks