/**
 * A JSON value crossing a host-owned boundary — a realtime snapshot, a contribution's input.
 *
 * Data, not vocabulary. Everything the platform carries between two pieces of module code is
 * serializable and opaque to the host: the host validates that it *is* JSON and never what it
 * means. That is what keeps a domain contract (a slide, a timeline, an announcement) entirely
 * between the two modules that share it, with nothing for Core to learn or version.
 */
export type ModuleUiJsonValue =
  | boolean
  | number
  | string
  | null
  | readonly ModuleUiJsonValue[]
  | { readonly [key: string]: ModuleUiJsonValue };