REAL_C dataset: Multi-channel Eliashberg framework data and reproduction package for correlated layered nickelates

Superseded. This version predates Correction 2 (the Gate-2 "Ds" quantity is a normal-state band-structure diagnostic, not a superfluid stiffness; the phase-stiffness/BKT path is retracted). See the latest version. Citation. Cite the concept DOI 10.5281/zenodo.19368081, not this version DOI. The Citation section inside open_data_README.md incorrectly gives 10.5281/zenodo.19368082. CORRECTION (2026-08, v2): the quantity labeled Ws in this package is the s-channel eigenvector mixing weight (d-wave purity), not a superfluid stiffness. The sealed Tc = 296.70 K is a fixed-package numerical benchmark, not a physical result. See CORRECTION_NOTE_Ws_observable.md in this record for the full correction. Sealed computational data and reproduction scripts for the REAL_C configuration (Tc = 296.70 K, μ* = 0.14, Ω_sf = 400 meV) from a multi-channel Eliashberg study of high-Tc parameter-space accessibility in correlated layered nickelates. Includes the Gate4 v2.6 pipeline code, sealed manifest, 105-run parameter landscape survey, and figure-generation scripts. Accompanies the manuscript submitted to npj Quantum Materials (2026).