Evaluator-Optimizer: loop a separate grader against a rubric until the draft earns a pass, not just the first shot

A single-shot prompt gives you one draft and no idea whether it's any good. You find out in production. The Evaluator-Optimizer pattern closes that loop, and I built an interactive demo to make the difference visible: an optimizer drafts, a separate evaluator scores the draft against an explicit rubric and hands back concrete feedback, the optimizer revises, and the cycle repeats until the score clears a bar or hits a round cap. It is not the same as self-refine — and that distinction is the…