Natural Physics Transport Architecture: Actuation, Relay Gates, and Interstellar Transit

This work develops a complete conditional architecture for interstellar transport based on Natural Physics, integrating metric actuation, relay-gate transport, navigation, momentum and energy accounting, protection, control, and staged experimental validation. It specifies constructor-level system requirements while keeping the central physical uncertainty explicit: whether the proposed actuator can generate the required spacetime response. The result is therefore a build-oriented transport framework whose engineering logic is closed wherever established physics permits, and whose remaining decisive claims are reduced to identifiable experimental tests.