definitionExtra
What a definition's page shows below its code, if an app showing the forge's pages has more to say of it (the studio: how it runs, version by version): set once, as that app's pages start. The forge sets none, so a forge's pages never show how its code runs.
import type { ReactNode } from "react"; export const definitionExtra: { current?: (p: { name: string; hash: string }) => ReactNode; } = {}