Purchase totals report

Purchase totals over a date range, one row per what rowsPer picks; only non-draft purchases count. VENDOR: each vendor with a purchase in the range, with purchase count and total spend, leaving out purchases the caller's team cannot view; for top vendors or vendor spend. PRODUCT: each product on a purchase, with quantity purchased (in the product's unit type) and total purchased (item quantity × price, summed); for what is bought most or spend by product. PRODUCT attributes are as they are now, not at purchase time; its owner is the product's owner, not the purchase owner ownerIds filters on. Rows come by total spend, highest first. lastPurchaseDate is the vendor's latest purchase across all time, as M/D/YYYY, and can fall outside the range. For the purchases themselves use distru-report-purchase-order-history. Money, quantities and counts are numeric strings. Returns 500 rows by default (maxRowsLimit, up to 5000). When meta.truncated is true more rows exist: repeat the call with the same filters, any date range made explicit so every page covers the same one, and cursor set to nextCursor — or narrow the filters when you need a summary rather than every row.