Task 10.8: Monitoring & Observability Setup

**Phase:** 10 - Showcase Application (Lower Priority)

**Tags:** infra, showcase, observability

**Description:**
Set up Prometheus, Grafana dashboards, Jaeger, and log aggregation.

**Acceptance Criteria:**
- [ ] Set up Prometheus
- [ ] Set up Grafana dashboards
- [ ] Set up Jaeger
- [ ] Set up log aggregation