The Linux kernel asked for the model’s name on every AI-assisted commit in January, cut it to the word LLM in August, and removed the tag in October. The human sign-off line next to it never moved. A provenance field lasts as long as something fails without it.
A blameless postmortem is a trade: the engineer who broke it gives a full account of what they did and saw, and in return the account can’t be used against them. When an agent wrote the change, its account is already in the transcript. The person whose account isn’t is the one who approved the run.
Google’s review tooling gives engineers a button that says the analyzer was wrong, and disables analyzers that collect too many of them. An agent never presses it, so a guard pipeline aimed at agents loses the only instrument that ever measured its own rules.
Run git blame on a line an autonomous agent wrote and it points at a service account. The commit is spotless. The one thing debugging actually needs, a person who remembers why, already exited.
Code generation is a commodity. The defensible value is knowing whether the output is safe to ship, and that’s the layer worth building.