{
  "dataset": "Faktury",
  "format": "csv",
  "dateFrom": "2026-01-01",
  "dateTo": "2026-03-31",
  "merged": false,
  "reason": "chunks collected so far; merge_strategy=csv_header",
  "chunks": [
    "2026-01-01_2026-01-31.csv",
    "2026-02-01_2026-02-28.csv"
  ],
  "mergeOutcome": "collecting_chunks"
}