Hyper-Shell Universe

This record provides an open, versioned reproducibility pack for the manuscript “The Hyper–Shell Universe (HSU): A Tangible Geometry of the Cosmos” (R. Bruni). The HSU framework models the observable Universe as a finite–thickness hyperspherical shell with a small offset of the Milky Way from the Centre of the Shell’s Width (CSW). This geometry yields a spin–0 intrinsic distance/potential dipole, a normal Hubble drift that explains the CMB kinetic dipole and bulk–flow plateau, and a small anisotropic Emergent Dark Sector (EDS) consistent with late–time cosmic acceleration. The reproducibility pack implements the Directional Closure Template (DCT), distance–dipole kernels, Cold Spot geometric–texture toy models, and simple Fisher forecasts for the intrinsic anisotropy parameter \varepsilon_0. Contents: – latex/: full \LaTeX{} source of the manuscript (main text and appendices), bibliography, and figure includes. – code/: Python scripts and Jupyter notebooks for distance–dipole kernels, DCT mock analyses, CSS–offset bulk–flow plateau estimators, and Cold Spot lensing/ISW toy models. – data/: processed (analysis–ready) data products, including dipole summary tables, redshift kernels f_D(z), bulk–flow mocks, and Cold Spot profile shapes. – figs/: figure source scripts and final PDF figures (e.g. the HSU Mollweide dipole map). – checksums/: SHA256 checksum files for verification of archive integrity. The goal of this archive is to make the HSU analysis fully transparent and falsifiable. All code is written to be readable and easily portable; environment specifications (e.g. environment.yml or requirements.txt) are included to facilitate reproduction of results. Users are encouraged to adapt the scripts for independent tests of the HSU predictions, including directional–closure tests, redshift–dependent dipole fits, and Cold Spot geometric–texture comparisons.