Data & Repro Pack (REALDATA) for "A testable brane-world unification: one parameter links a GW spectral break and ΔNₑff"

Machine-readable files sufficient to regenerate the figures and core checks in Maldonado (2025). • PTA spectra (CSV): freq_Hz, log10rho_median, log10rho_p16, log10rho_p84• LISA sensitivity (ESA format CSV): f_Hz, Sn_1_per_Hz, label• CMB/BBN prior (JSON): Planck-2018 ΔN_eff = 2.99 ± 0.17• Best-fit parameters with 68% intervals (JSON)• Two-page Results PDF (figures + equations)• Tiny script to reproduce the plots from the CSVs• MANIFEST + CHECKSUMS + column schema and READMEs Purpose. Enable independent inspection and reproduction of: (1) the broken-power-law SGWB with break frequency f_br(λ) ∝ λ^{1/4}, and (2) the mapping of the dark-radiation constant C to early-time radiation, C/ρ_{γ,0} = (7/8) (4/11)^{4/3} ΔN_eff. Falsifiability rule (single parameter). One and the same λ must (i) place f_br where PTA→LISA allows and (ii) yield ΔN_eff consistent with CMB/BBN. If not, the model is wrong. Canonical files in this pack• exported_pta_spectrum_HD_30f.csv (anchor spectrum) • exported_pta_spectrum_CP_30f.csv (cross-check) • exported_pta_spectrum_HD_30f_100fDMGP.csv (denser grid variant) • ESA_RCL2019_10yr_instrument_PLUS_confusion.csv (LISA sensitivity) • CMB_Planck2018_DeltaNeff_prior.json • BestFit_with_uncertainties_20250814_200657.json • Results_TwoPager_REFRESH_20250814_200726.pdf (canonical two-pager) • reproduce_posteriors.py, MANIFEST.txt, CHECKSUMS.txt, README_* and columns_and_units.txt • Preview PNGs for Zenodo gallery