Open source has never been a purely technical system — it is a trust system whose integrity depends on contributors owning what they submit. That ownership is what allows maintainers to extend trust to unfamiliar contributors: not blind faith, but a reasonable expectation that someone on the other end of a pull request can answer a question about their own code. AI-generated contributions do not void that expectation loudly — they void it quietly, by producing work that can clear automated checks while its submitter has no account of how…