docs: add operational runbook, Grafana dashboard, and production docker-compose
Add comprehensive operational documentation:
- docs/operations/backup-restore.md: SQLCipher, file backend, blob backup/restore
- docs/operations/key-rotation.md: auth token, TLS, federation, DB key, OPAQUE rotation
- docs/operations/incident-response.md: playbook for common incidents
- docs/operations/scaling-guide.md: resource sizing, scaling triggers, capacity planning
- docs/operations/monitoring.md: Prometheus metrics, alert rules, log monitoring
- docs/operations/dashboards/qpq-overview.json: Grafana dashboard template
- docs/operations/prometheus.yml + alerts: Prometheus scrape and alert config
- docs/operations/grafana-provisioning/: auto-provisioning for datasources and dashboards
- docker-compose.prod.yml: production stack (server + Prometheus + Grafana)
- .env.example: documented environment variable template
Christian Nennemann
91c5495ab7