IMHO after https://github.com/PrivateBin/PrivateBin/pull/1754 we again need to make it a requirement in the guidelines to disclose the fact an LLM is used.
This also adds to attach screenshots for visual changes etc. (which again also ensures users actually _test_ the changes they submit)
I wrote it here and not in the wiki, because:
* this text can be read by an LLM inside the git repo, which I guess is beneficial
* the text may be shown more prominently ere IMHO
* I guess the wiki guidelines rather give a "big introduction" into how to contribute with the code base, and do not define "rules"/guidelines at all