Everyone's excited about Jev: a model that scores an agent's decision in 400ms.
Good. But it reads what the agent wrote. It can't see what the agent did.
A diff answers one question: what changed. It can't tell you whether the agent stayed in scope, what it read before it drifted, or whether "done" means what you asked for.
CodeClone answers those before the model ever gets a vote — deterministically. Intent declared up front. Blast radius mapped. Boundary set. Then the real patch is checked against what was promised. Every step lands in an audit trail.
No LLM decides if a change is safe. It either computes the fact or says it can't.
Fast judges are welcome. Put them on top of facts, not instead of them.