It's repo of site. It has 2 parts: admin and site.
/admin - here is Strapi application. Strapi is headless CMS that's provide easy configuration of schema through npm run develop.
/site - here is next.js application. Next.js application need to have token.
./dev.sh - it's generate default User with admin@nil.foundation:XYgiXDOcg4Lfpv6g accessible on http://localhost:1337/admin, site will be available here http://localhost:3000/
You should use ansible role site from (infra repository)[https://github.com/nilFoundation/infra].