{
  "observed_at_utc": "2026-10-25T12:08:45.286353+00:00",
  "python": "3.10.12",
  "nginx": "nginx version: nginx/1.18.0 (Ubuntu)",
  "scope": "own loopback child only; no production config/reload/browser/CDN",
  "configuration": "pid <temporary-directory>/nginx.pid;\nerror_log <temporary-directory>/error.log;\nevents { worker_connections 32; }\nhttp { access_log off; server { listen 127.0.0.1:<ephemeral-port>;\nadd_header X-Content-Type-Options nosniff always;\nlocation = /parent-only { return 404; }\nlocation = /child-always { add_header X-Lab-Route child always; return 404; }\nlocation = /explicit-both { add_header X-Lab-Route child always; add_header X-Content-Type-Options nosniff always; return 404; }\n} }",
  "results": [
    {
      "path": "/parent-only",
      "status": 404,
      "nosniff": "nosniff",
      "child_header": null,
      "body_bytes": 162
    },
    {
      "path": "/child-always",
      "status": 404,
      "nosniff": null,
      "child_header": "child",
      "body_bytes": 162
    },
    {
      "path": "/explicit-both",
      "status": 404,
      "nosniff": "nosniff",
      "child_header": "child",
      "body_bytes": 162
    }
  ]
}