The end of the Great Migration is here!!!
Moves the last pages over, deleting pages like the FAQ that we don't use
and that contain duplicated information anyway.
Dev secret auth page URL had to change as App Router doesn't like the
leading underscores in the path.
Also fixes the not-found recommendations to use the proper Next.js
not-found page so it will return a 404 as it should. (I was under the
erroneous impression that I couldn't get the pathname in not-found.tsx,
that is not true, so this works better.)
The Vercel Data Cache caches data across deployments, and we want to
check for updates in federated content, so let's revalidate the data
once a day.
It may be more efficient to revalidate on-demand, since we don't change
most of these sources once a day, but that requires setting up an API
endpoint (and figuring out how to authenticate it), so this is
quick-and-easy for now.
Charis