I tested this by locking `aguestuser`'s account (tpo/tpa/team#40772),
and running ud-generate on alberti. The user was still present on
alberti in: `/var/cache/userdir-ldap/hosts/forward-alias`.

This reflects a bit better how i operate. First I disable a user, then
if i'm really sure, i trash their files and remove their account. Then
I looked at all the other services, ugh.

This is:

    ikiwiki2hugo.py --exclude .pytest_cache

With the latest script from:

<https://gitlab.com/anarcat/scripts/-/blob/master/ikiwiki2hugo.py>

... as of right now.

The latter is actually one of two standard file extensions (as per
RFC7763, the other being .markdown). It's also the extension expected
by GitHub, GitLab, and other wiki software.

So for the sake of future-proofing and compatibility, rename all files
to the new name.

This will hopefully not break anything: the file extension is not
present in the rendered version anyways.

Those are more future proof and will work in gitlab.