Here's the zip file it gave me of the files it generates along the way: https://static.simonwillison.net/static/2026/turbo-pascal-an...
I had Codex GPT-5.4 xhigh run a check of those files to see if the artifact at the end appeared to use the right data, which isn't 100% fool proof but have me enough confidence to publish since this is a pretty low stakes project!