Changes to Download one company's price rows for the given price type as an `.xlsx` — the company price sheet (`itemCode, price, quantity, fromDate, endDate`), the mirror image of the item sheet. Re-imported via M:IO.CommonAPI.Controllers.v1.Catalog.ItemPricesController.BulkUpsertByAccount(System.Int32,IO.Domain.Shared.Enums.PriceType,System.Collections.Generic.List{IO.Catalog.Contracts.DTO.Pricelists.CompanyPriceSheetRow},System.Threading.CancellationToken), which accepts exactly these fields. The underlying query is already Company-scoped to this account and applies the purchase-price visibility rule per item, so no extra gating is needed here.