GouvernementFR/dsfr ? reverse-engineered prompt

Build me the official French government design system for state websites. I want a reusable frontend kit with accessible HTML, CSS and JavaScript components that public service teams can plug into their projects, with compiled assets ready to use in a simple site. Include the core styles and scripts, utility styles, icons, fonts, favicons, and a few example pages that show common components and page layouts in real use.

It should be easy to install through a package manager, but also possible to clone the repo, install dependencies, and build everything locally. Please include a local demo or documentation area so people can preview components and examples in the browser. Keep the setup simple for plain HTML projects, with the expected file layout and working asset paths.

Also keep the usage terms flow in place, since this design system is only meant for official French government websites. Follow the official DSFR guidance and accessibility expectations, and check the current docs online if you need to.