The backorder stock notice (":stock: op voorraad, de rest op nalevering")
never appeared on the product detail page because show-product.blade.php
rendered <x-product.stock-text> without :cartQuantity. For backorderable
products (use_stock + out_of_stock_sellable) selecting more than the
physical stock now shows the notice, live-bound to the quantity selector.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>