{
  "experiment": "native-month-boundary-import",
  "prepared_execution": true,
  "started_utc": "2026-11-15T07:00:32.7604742Z",
  "witnesses": [
    {
      "amount": "1.00",
      "expected_period": "2026-09",
      "actual_period": "2026-09",
      "id": "SEO-SEP-END",
      "input_date": "09/30/2026"
    },
    {
      "amount": "2.00",
      "expected_period": "2026-10",
      "actual_period": "2026-10",
      "id": "SEO-OCT-START",
      "input_date": "10/01/2026"
    },
    {
      "amount": "4.00",
      "expected_period": "2026-10",
      "actual_period": "2026-10",
      "id": "SEO-OCT-END",
      "input_date": "10/31/2026"
    },
    {
      "amount": "8.00",
      "expected_period": "2026-11",
      "actual_period": "2026-11",
      "id": "SEO-NOV-START",
      "input_date": "11/01/2026"
    }
  ],
  "excel_version": "16.0",
  "excel_build": 20527,
  "before_october": 686500,
  "before_ytd": 6200758.000000001,
  "refresh_return": true,
  "refresh_seconds": 1.5468984,
  "after_october": 686506,
  "after_ytd": 6200765.000000001,
  "clean_rows": 484,
  "result": "PASS",
  "native_seconds": 4.6560669,
  "api_ms": 5377,
  "controller_seconds": 5.504603252000379,
  "per_task_usd": null,
  "cost_boundary": "Existing isolated research pilot; no attributable per-task operating cost measured.",
  "prior_attempt": {
    "result": "FAIL",
    "reason": "Controller used exact equality for floating-point YTD value 6200765.0000000009; corrected to explicit USD 0.005 tolerance, then reran. Period assignments and native values were correct in both runs."
  }
}