fix(docs): foundations/colors|typography|spacing + overview usam tokens.ru.*

Tela em branco em https://design-system-portal-ru3.pages.dev/

 era
causada por foundations pages ainda referenciando tokens.color.* (STI),
quebrando o JS bundle em runtime.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>