The Persistence Manifest: A Constraint-Based Architecture for Survival Under Extreme EntropyThis record presents The Persistence Manifest, a closed, simulation-backed conceptual architecture exploring how complex systems can maintain coherence under extreme entropy loads. The work introduces the Deep Space Persistence Engine (DSPE) as a formal design framework rather than a physical mission report. Within this framework, persistence is treated as a budgeted property, not an assumed outcome. Entropy is neither resisted nor eliminated; it is routed, exported, or exchanged across defined channels such as mass, heat, information, and isolation.