Health endpoint

Machine-readable probe used by uptime monitors

{
  "status": "healthy",
  "region": "eu-central-1",
  "version": "1.4.2-rc.3",
  "timestamp": "2026-08-29T12:00:00Z",
  "checks": {
    "database": "ok",
    "redis": "ok",
    "object_storage": "ok",
    "disk": "ok",
    "certificates": "ok"
  },
  "warnings": ["metrics-ingest p99 latency above threshold"]
}