Phase 69 · lifecycle cost gate · AT-0673 → AT-0688

Build the whole map for one trip and you lose. Share it across thousands and the cost per trip falls.

This phase charges the whole bill of the strongest toy architecture we have — address formation, the storage burden of eight routing trees, doorway activation, payload movement and restoration — and amortises it over a lifetime of trips against an ordinary point-to-point baseline. At one-off and low use there is no cost advantage at all. Sublinear amortised cost only emerges under heavy reuse. Every number here is a normalized count of modelled operations. It is not physical energy and it is not an efficiency claim.