it could be deployed like phanpy. in fact the original implementation that i forked it from is deployed here and you can use it: foryoufeed.vercel.app/login

if there's enough interest i could deploy my fork to #vercel in a similar way, i just don't have a vercel acccount yet so i haven't done it.

and yes it could be used as a package inside the standard mastodon web app. @rolle has suggested he might integrate it to the mastodon fork he runs.