Every agent I have ever shipped was qualified the same way: someone watched it work once, nodded, and called it production-ready. I did this for years. I trusted my own demos. So I built the thing that stops me. It's called HivePlane — an open-source control plane where an agent cannot touch a production context until it has passed a reproducible benchmark and holds a signed attestation. Last week I ran its first full field test against real agents: 10 scenarios, 20 acceptance criteria, a...