{
  "experiment": "native-missing-external-workbook",
  "prepared_execution": true,
  "started_utc": "2026-11-15T07:01:53.8630089Z",
  "expected_value": 1250.25,
  "excel_version": "16.0",
  "excel_build": 20527,
  "before": 1250.25,
  "link_count": 1,
  "open_without_update_value": 1250.25,
  "update_error": "Unable to get the UpdateLink property of the Workbook class",
  "after_update_attempt": 1250.25,
  "formula": "='$TASK_DIR\\[link-source.xlsx]Input'!A1",
  "result": "OBSERVED-CACHED-VALUE",
  "native_seconds": 1.7687739,
  "api_ms": 2219,
  "controller_seconds": 2.3022189720004462,
  "per_task_usd": null,
  "cost_boundary": "Existing isolated research pilot; no attributable per-task operating cost measured.",
  "formula_path_redacted": true
}