Styles
8 styles. How the app looks. Each style is one of the library's scheme families.
A style decides how everything looks. Each one is a scheme family from the library, written as hard rules: the theme to apply, type, colour and blocks, the motif, motion and haptics, and the named mistakes agents make without it. Every style ends with a self-verification loop your agent runs before it says it is done.
Pair a style with a brief for the contents, and a recipe for the screens.