{
  "schema": "guanghu.navigation-map/v1",
  "node_id": "BS-SG-003",
  "role": "新加坡备份、存储与海外下载中继",
  "modules": [
    { "code": "SG3-GTW-01", "name": "历史 Gatekeeper", "bind": "3910", "owner": "pm2" },
    { "code": "SG3-RLY-01", "name": "海外依赖下载中继", "bind": "ssh-only", "owner": "root" }
  ],
  "upstream": "JD-FD-PRIMARY"
}