I have a personal wiki instance hosted for that purpose. I collect knowlege in it, that I might need later and forget. Although I might not use dokuwiki, if I had so start the wiki again (would go to markdown).

The german wetter.com has that feature.

How secure is the password protection?

That would chsnge nothing, simce they would also be on the hard drive.

It seems a bit off that the only accept code via mail but host the repo with forgejo and have a lot of open PRs.