List Page
A page of one list: the title, the add action, a search when the list needs one, and the rows in a card.
Default
A toolbar group above the card: search on the left, add on the right. The field is bg-card in light mode, at most max-w-xs wide; Escape clears it, and a query with no match shows an Empty that clears it too.
Without search
No toolbar: the add action sits in the header, centered on the title and description.