{
  "checked_at": "2026-10-20T18:21:18.629Z",
  "method": "HEAD with full browser UA, two attempts, concurrency 3; GET fallback is not used, so a status other than 200 is reported, not assumed dead",
  "unique_urls": 359,
  "ok": 359,
  "failed": 0,
  "pass_rate_pct": 100,
  "failures": [],
  "note": "Manual check. Re-run `node linkcheck.mjs` after a large ingest and keep checked_at with the number."
}