Runtime engine

The engine should sit inside the product, not beside it as an afterthought.

This starter ships with the live settings layer already wired into the token contract, responsive shell, mobile drawers, and shared control surfaces.

Read the blueprint truth

Built in

The engine already controls surface brightness, palette, structure, reading, focus, movement, and visual comfort.

Projects should add content and components on top of this contract, not rebuild the runtime from scratch for each new site.

Preferences live in local storage with versioning and root data attributes.

Theme and comfort modes work through tokens instead of page-specific overrides.

The drawer works on desktop and mobile with focus trapping, tap-away close, and swipe dismiss.

The engine is ready for more controls later without needing to rewrite the site shell.