Reproduction Kit (IRIDIUM): Planck 2018 FULL + DESI DR2 BAO (CTRL2 vs RG vs Phantom)

This dataset provides the full reproduction kit for the EP3 “Iridium” cosmological analysis comparing three controlled scenarios using Planck 2018 FULL likelihoods combined with DESI DR2 BAO: • CTRL2 (wide w₀ prior) • RG Restricted (non-phantom support, w₀ > −1) • Phantom Restricted (w₀ < −1) The archive contains: • Frozen MCMC chains for all three runs • Likelihood summaries, marginal statistics, convergence diagnostics • Original Cobaya configuration files • Conda environment export and system information • A fully executable Jupyter notebook reproducing all figures and tables used in the Iridium results pape The notebook reproduces • w₀ posterior comparison • Δχ² component breakdowns • Triangle plots • Parameter shifts This release is intended to provide full computational transparency and reproducibility. All results can be regenerated locally by unzipping the archive and running the notebook in the provided environment. Associated paper: “Derivation of δw ≈ 0.070 from Nuclear Binding Energies in Relational Gravity (Iridium Run)” This Zenodo deposit establishes timestamped computational priority for the Iridium evidence tier.