Cosmogon: A Reproducible Living-Universe Sandbox

This record contains a project and software overview of Cosmogon, a native living-universe simulation. It describes the application and simulation architecture, deterministic execution, reproducible research workflows, source-backed Solar System and Mars terrain data, and the project’s developing habitat and spacecraft engineering studies. The overview reports bounded software and numerical verification for development snapshot 9eb830d, dated 15 October 2026, including 539 passing tests. It distinguishes reproducibility and regression testing from empirical validation and documents the model’s assumptions and limitations. The spacecraft operation-window results are specific to a tested scenario; they do not establish a validated landing system or completed cargo delivery. This is a technical project overview, not a peer-reviewed research paper. The development features described are not part of the Cosmogon 1.0.0 release.