I suspect that before very long the use of AI will simply be assumed. Having a field to mark the use of AI will seem as quaint as having one to mark the use of a high-level language would today. So, probably not worth the effort to update the site- the change would likely be obsolete before it could be implemented (unless maybe if you used AI to help with the implementation

).
That said, there's no harm in documenting the use of AI in the readme file, including specifics as to what AI was used for.