People still call things other people do novel. There's clear social proof that humans do things that other humans consider novel. Otherwise the word would probably not exist.
Just today I wrote a python program that did not resemble anything I'd written before, nor had I seen anything similar. I had to reason it out myself. That passes thr test that the original comment set.
Anyway, I've coded all kinds of wacky shit with claude that I guarantee nobody has implemented before, if only because they're stupid and tedious ideas. They can't all be winners, but they were novel, and yet claude code implemented them as confidently as if they were yet another note taking app. They have no problem handling novel ideas, and although the novel ideas in this case were my own, its easy to see how finding new ideas could be automated by exploring the combinatorial space of existing ideas.
For example, what I refered to that I've written is a dynamic storage solution for n-dimensional grids, that can grow arbitrarily in any direction, and is locally dense (organized into spatially indexed blocks of contiguous data).
I had never considered this problem before, and I certainly had never seen a solution before (even though there may well be one).
I worked it out on paper, considering how integer lattices can be partitioned and indexed, and then I transformed that into a design which I then implemented. Working purely from the design, not considering existing solutions.