Reproducible Cosmology Data Package: Hubble Constant (H₀) Tension 21×21 Correlation Framework (Preview Release)

This dataset is an intentionally minimal, machine-readable preview of the upcoming Jeffrey 21×21 Hubble Tension Reproduction Dataset, part of a larger effort to achieve full audit-level reproducibility of the Hubble constant reconciliation analysis. The package includes: A compact measurements table, The associated 21×21 correlation matrix, A JSON summary of systematic bias terms, and A lightweight Python script (run_full_analysis.py) for validation runs. This preview serves as a transparent early release for collaborators and reviewers, demonstrating the data schema, file standards, and open-science methodology being developed for the forthcoming comprehensive dataset. The full dataset will expand upon this structure with extended sources, cross-correlation handling, systematic covariance modeling, and reproducibility pipelines suitable for full-scale cosmological audits. DOI for paper 1: https://doi.org/10.5281/zenodo.17345276