Three hundred and forty tests. Ninety-five percent coverage. Five docs, a runbook, a watchdog, and a launchd plist. In three weeks it had never placed a real trade. This is what we learned when we finally pulled the data instead of writing another fix.
Most AI-built code ships fast and breaks faster. We fixed 100 bugs across 11 projects in one overnight session — autonomously. Here's the testing discipline that made that possible, and the course that teaches it.
We shipped four bugs past code review, passing CI, and two AI reviewers in a single day. Here's what that taught me about the real limits of agentic coding — and the one discipline that would have caught all of them.