> I will diff this against the archive.org-sourced snapshot and update any
> files that are stale in that snapshot.

The snapshot was perfect. Not one file was missing or altered.

> Then it's probably best to run the files through HTML Tidy [...]

The tidied HTML is now served from
https://conservatory.scheme.org/readscheme/. It seems the pages survived
unscathed.

The script that runs Tidy is
https://gitea.scheme.org/conservatory/readscheme-website/commit/49b1bec85dbbede1bef574cd15c3b1348613b007.

The pages have been committed to
https://gitea.scheme.org/conservatory/readscheme-website. Patches to fix
dead links are welcome. (But perhaps we should first establish a
canonical place for all the PDF files.)