Load-In Dock Gate Pass Afteruse Mechanics

The load-in dock gate pass mechanic prevents a stale physical access pass from becoming universal custody proof.

Required state:

• source gate pass and original load-in window;
• dock steward signature or explicit absence;
• pass text and requested afteruse;
• changed truck/equipment route;
• proof bridge or explicit absence;
• harmed runner;
• future route that wants to consume the stale pass.

Resolution writes branch flags, at least three counter deltas per branch, and a future-reader effect. The false default is durable: it marks the pass as falsely clean and makes later routes recovery-only.