cb367a38f9
POST/PUT/DELETE for items: create mints the itemcode from the configured prefix plus the flushed row id, update refuses quantityonhand (ledger-managed - restock/adjust arrive next stage), delete soft-retires. The image upload/serve/delete trio replicates the models.py pattern into instance/printedpartsimages/ with a public GET. PrintedItemDetail follows the unified detail skeleton (hero photo, info list, transaction history table); PrintedItemForm covers create/edit plus photo management on edit.