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

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).