Type scale

There is no exposed type scale. The framework exposes font weights, line heights, and the prose-specific overrides. It does not expose fs-1 through fs-7, heading-level tokens, or heading-level utility classes. The reason is the same as for the baseline: a public scale is a contract, and adding it now would lock in choices before theme work and real component use tell us what is actually needed. When a scale is needed, the optional fluid module is the right place to start. A future theme can override its tokens, not invent a parallel scale in components.