It wasn't a straight port, he had an LLM write a spec by reviewing the code, and then in another session another LLM did the development. That is basically a Clean-room approach. It would be unlikely there would be much - if any - code that is exactly the same so showing copyright infringement seems very unlikely.
jeroenhd|5 days ago
Now one side is collecting the necessary tokens to get the AI to output data from the training set in the second run.