Owner's rule: the POS counter only carries priced stock.
- POS catalogue lists only active stock items with selling_price > 0
(POS_CATALOG_FILTER); checkout refuses any line priced at R0 or less.
- New stock order now gives a new stock item the PO line's cost and the
default 80% markup. It used to drop the cost, which is how 157 stock
items reached the till at R0.
- Collection Confirm "Add to POS" becomes "Add to price list": customer
lines go to price_list at cost + 80% (needs SKU, cost and supplier),
never into stock_items. Route renamed to add-to-price-list.
- scripts/2026-10-30-pos-zero-price-cleanup.ts: priced 79 items from their
PO line cost, switched off 48 with no cost and no stock, left 30 stocked
ones active for costing (already applied on live PB).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
