Redesigned toasts and a clearer inventory list

Redesigned toasts

Toasts across admin have been redesigned, with the recolored wave treatment now covering every type, so success, warning and failure read differently at a glance instead of all looking alike. Failed product saves also name the field that's wrong rather than reporting a generic error.

Inventory list improvements

The inventory list has a tighter layout and shows SKUs where you'd expect them, which makes matching a row to a shelf label or a supplier sheet a matter of scanning the page rather than opening each product.