This Zenodo deposit accompanies the manuscript by providing the analysis scripts and the derived outputs needed to reproduce the figures/tables from the processed genotype dataset (not included here). The `script/` directory contains the R scripts used for each analysis step: preprocessing/admixture, PCA, FST, TreeMix, ALDER-based admixture timing, LD-based Ne (SNeP), ROH, phasing/DCMS scans, DCMS annotation, and GO analysis. The `results/` directory contains the corresponding final exported outputs (manuscript-ready figures and supplementary tables), organized by analysis module. What is excluded: this deposit does not include genotype data, large intermediate files (e.g., PLINK binaries, per-chromosome VCFs, phased haplotypes, temporary log files), or any materials that could be restricted by data-sharing agreements. External executables and third-party tools used to run parts of the pipeline (e.g., PLINK, ADMIXTURE, ALDER, SNeP, selscan, Beagle, bcftools/tabix/bgzip, and helper Python scripts). Users should install those dependencies separately and follow their original licenses/citation requirements.