Reading packages/scraper showed QSFPTEK/ATGBICS populate quantity_available
100%; they simply lack FS.com-only units_sold/warehouse-split. The 123 alert
keyed on those FS.com fields and false-positived QSFPTEK. Rekey to
quantity_available OR warehouse_qty so the alert list drains to empty; surface
pct_qty_available/pct_vendor_ts in v_stock_completeness.
