{
  "id": "msg-01-presence-architect",
  "type": "presence",
  "ts": "2026-09-01T09:00:00Z",
  "source": {
    "pico": "pico.architect.001",
    "transport": {
      "mqtt": {
        "client_id": "mqtt-arch-7f3a",
        "topic": "pico/pico.architect.001/presence"
      },
      "kubernetes": {
        "pod": "hello-architect-pico",
        "namespace": "nervous-system"
      }
    }
  },
  "data": {
    "status": "online"
  }
}