One hundred twenty-eight recorded robot handoff episodes. The same process repeats, but timing, speed, and starting conditions change. Twenty-three runs miss the same deadline. Here is the rule: once the workpiece enters the handoff zone, the receiving gripper has two seconds to arrive. Metriplane evaluates each recorded episode independently. A bounded campaign layer then aggregates the outcomes and keeps invalid traces separate. In this deterministic parameter sweep, one hundred five runs produced no configured incident. Twenty-three exceeded the handoff deadline. Select any violation and inspect the exact event sequence. In episode one-oh-four, the workpiece entered at two point five seconds. The deadline expired at four point five. The receiver arrived late at five point zero. Metriplane preserved the incident as a verified evidence bundle, then generated a regression that detected the same recorded failure again. From one hundred twenty-eight episodes to the exact failures worth reviewing. Metriplane.