The Test Suite Was the Incident · A night of brittle fixtures, 49 failed CI runs, and an expensive lesson about what happens when AI agents write the test suite and nobody owns the test data.

At 10:00 PM EDT last night I signed up for the $100 plan for Codex, the OpenAI coding agent that was driving most of the night’s work, because about a dozen Zabriskie PRs were in flight and I wanted them merged before I went to bed. Before 3:00 AM I had upgraded to the $200 plan. Somewhere in between, GitHub’s usage page ticked through roughly 90% of a $200 CI quota, and I sat there watching pull…