{
  "warehouse_demo": [
    {
      "month": "2026-04",
      "value_cents": 60000
    },
    {
      "month": "2026-05",
      "value_cents": 59000
    }
  ],
  "raw_layer": "unchanged CSV files",
  "prepared_layer": "validated line-grain records",
  "serving_layer": "category/month or order-grain aggregates",
  "format_note": "SQLite is a local relational analogue; it is not a distributed warehouse or lakehouse."
}