PUNQ: reproduction package for "Performance evaluation of variational quantum eigensolver and quantum dynamics algorithms on the advection-diffusion equation"

A self-contained Python script that recomputes every figure, table, and appendix check of Özgüler, Phys. Rev. E 114, 025306 (2026) [published version is also available here], from scratch with fixed seeds and no input data files. The full VQLS-VQE state-vector engine is inlined in reproduce_paper.py; the only dependencies are numpy, scipy, and matplotlib, with qiskit optional for drawing the Fig. 2 circuit. Exact library versions are pinned in requirements.txt. Three run modes span roughly five minutes to the exact published settings. Reproduces: Figs. 1-4, Tables I-IV, Appendix A (worked N=4 example, Proposition and spectral-gap check), and Appendix B (Pauli decomposition and the exact three-term LCU). This deposit contains the script, its pinned requirements, and the README. Licence terms are given by the record's CC0 1.0 dedication.