{
  "manifest_type": "spreadsheet-input-manifest",
  "source": {
    "filename": "quarterly-sales-export.csv",
    "csv_digest": "88d18cebd967ddfbe8c6acad7bb9a583a2f392ef9f076c072ec36c5cdd713d13"
  },
  "ranges": [
    {
      "ref": "B2:C3",
      "values_digest": "40c6fbe15754f4c79bcecb2f1b953dc93110760a747aa80ba38a4ca4793884bd",
      "semantics": "policy_parameters pointer: Q1 and Q2 revenue for the East and West regions"
    }
  ],
  "produced_by": "hand-written export script, no workbench: node executionHash() over the raw matrix per this doc's algorithm section",
  "produced_at": "2026-07-18T00:00:00Z"
}