/**
* String-literal unions that several components' own exported type aliases resolve to.
*
* This is deliberately NOT the styling vocabulary: `variant`/`appearance`/`frame`/`size` live in
* `variants.ts`, and `scripts/check-style-vocabulary.mjs` polices component-local copies of those
* specific member sets. What lives here is the smaller set of *value* vocabularies that several
* components had each spelled out for themselves character-for-character — two native-platform
* ones forwarded straight to a wrapped ``/`