Supplementary data and code for "Threshold, bandwidth, and kernel-controlled unstable-band topology in a fractional Gross-Pitaevskii equation with nonlocal cubic response and quintic saturation"

This record contains the supplementary numerical data and Python scripts used to generate the figures and numerical tables in the manuscript “Threshold, bandwidth, and kernel-controlled unstable-band topology in a fractional Gross-Pitaevskii equation with nonlocal cubic response and quintic saturation”, prepared for submission to Nonlinear Science. The archive includes Gaussian baseline data, double-Gaussian band-topology transition data, sampled degenerate-edge points, topology-resolution checks, broadband-only two-window simulation data, multiple-seed broadband statistics, Python scripts, requirements file, and reproducibility notes. The dataset contains no sensitive, proprietary, or third-party restricted material.