UI Toolkit for Meta Ray-Ban Display material controls application

Before writing application source, read references/production-pattern.md. It is the complete low-freedom contract. Do not load broader toolkit references unless the request adds a genuinely different component domain.

After construction, run an unmasked typecheck, production build, and ../uit-screen-architecture-web/scripts/validate-app-structure.mjs src from the application workspace. Fix every finding and repeat until all commands succeed. Do not read the validator source.

Successful verification is the terminal condition. Device/runtime acceptance belongs to the caller.