I just also asked in a PM to juggledad and Flynn if it would be okay with them to continue keeping atahualpa updated on github.
It would be much more suited than this forum to publish fixes/updates to keep it running. Right now Atahualpa can still be used even with PHP 8.2 - but if this forum shuts down it would be nice to have a place where the remaining users could discuss things.

Linking to Github then could also be done here:
https://wordpress.org/support/theme/atahualpa/

So should bytesforall.com website shut down completely it's a better remaining place vs the wordpress.org forums.

As this forum is not the best place to continue development/bugfixing of Atahualpa - Valentin Treu has uploaded a fixed version here (3.7.27 will be up tomorrow and fully php 8.2 compatible, full width editor and google fonts can be used in editor)

https://github.com/rivella50/atahualpa


It's not possible for new users to register to this forum anymore. Also the releases got complicated github is the much better place.
Discussion can continue here, on github and on https://wordpress.org/support/theme/atahualpa/