This hasn't yet been decided, as I pointed out above. The courts have indicated that push button LLM output is not copyrightable, but haven't said anything about larger orchestrations of multiple agents operating over hours or days to produce something with direction from a human.

Given that photographs are copyrightable, I wouldn't hold my breath on projects like this being deemed ineligible for copyright.

Did you interact with said output by reviewing it and hitting squash on the PR? Congratulations, it's now a derivative work.

Edit: I stand corrected. It does appear that this is a serious issue.