Sound Booth Patch Bay Label Afteruse Receipt Mechanics

The mechanic treats a patch-bay label as route evidence with bounded scope. The evidence packet must preserve source label, channel map or explicit absence, engineer callout, mislabeled-return note, requested afteruse, future reader, selected posture, after-state, and counter deltas.

Branches move patchLabelAfteruseProgress, engineerTrust, sponsorSignalHeat, sabotageBlamePressure, soundBoothCustodyHeat, falseVoicePatch, and futureRouteCost. The bad default is durable: future readers can only recover from the false voice-patch posture rather than spend it as consent, archive custody, or sabotage authority.