Manage now connects to existing Grafana/Prometheus/Alertmanager instances
and never deploys its own stack.
- docker-compose.yml / docker-compose.dev.yml: removed prometheus, loki,
alloy, grafana, alertmanager, node-exporter services, the monitoring
network, and observability named volumes; they now ship only backend +
frontend. Dev frontend now joins the web network so the Vite dev proxy
can reach the backend.
- backend: alertmanager_url default is now empty; /api/monitoring/alerts
and /alertmanager-status return graceful "not configured" responses
when ALERTMANAGER_URL is unset. Added not-configured tests.
- docker-compose.observability.yml: kept as the optional standalone
example; header clarifies Manage does not deploy it.
- Removed orphaned combined monitoring/prometheus/prometheus.yml
(standalone stack uses prometheus.standalone.yml).
- Docs (README, REQUIREMENTS decision log, monitoring-logging-design,
observability-runbooks, context.md, MIGRATION_PLAN, frontend/README,
CHANGELOG) updated to the connect-to-existing model.
VITE_GRAFANA_URL / VITE_PROMETHEUS_URL remain as optional frontend
deep-link overrides. .env.example still needs a manual update (safety
policy blocks assistant edits): set ALERTMANAGER_URL empty/optional and
move standalone-only vars out of the root file.