What does “Hyvä module” mean, do I install something separate?

Yes. A Hyvä module verdict means the vendor (or community) ships a small bridge package, usually free, distributed via composer or marketplace, that re-renders the extension’s frontend in Tailwind+Alpine instead of Luma’s Knockout. The pattern is: composer require vendor/extension-hyva alongside the original vendor/extension, run setup:upgrade, and the storefront just works. Both packages are required, the original handles the backend and business logic, the Hyvä one re-skins the frontend.