QATNU and SRQID: reproducibility bundle (Makefile, scripts, requirements)

This archive provides the minimal, runnable assets to reproduce the numerics reported in the SRQID and QATNU preprints. Makefile – one-command runs; CPU-only. requirements_qatn.txt – pinned Python deps. src/srqid_numerics.py – SRQID: (i) Lieb–Robinson velocity from commutator growth, (ii) no-signalling local quench, (iii) energy-drift bound. src/qatnu_poc.py – QATNU: 8-qubit unitarity check, 1-D light-cone and dispersion, spin-2 1/k² PSD (1D/2D/3D), MERA coarse-graining (Hausdorff flow), and δχ vs. T back-reaction. Quick start make run_all # run SRQID + QATNU # or individually: make run_srqid make run_qatnu Outputs are written to outputs/ (CSVs + summary) and figures to figures/ (PDFs). Tested on macOS and Linux (Python ≥3.10).