Code and data for: Two-mode closure of the coupled criterion at a re-entrant vertex of brittle Menger sponges

Codes and run data behind the results of the article "Two-mode closure of the coupled criterion at a re-entrant vertex of brittle Menger sponges" and of its supplementary material, with the plotting scripts and plotted data of every figure. Contents: vertex eigenvalue solvers and benchmarks; the adopted energy-coefficient pipeline (mesh generation with Gmsh/OpenCASCADE; generating scripts included, meshes not stored) and a second construction; loaded-cell solvers and two reciprocal extraction codes for the vertex and edge shape factors; the vertex and edge forms of the coupled criterion; planar facet families; Monte Carlo uncertainty intervals; size, support, Poisson-ratio and stress-condition robustness studies; logs, JSON result files and stored fields. A working tree is rebuilt with tools/make_workdir.py; the figure scripts run directly from the deposit. Python with numpy and scipy (matplotlib for figures; gmsh and pyamg only for two pipelines). Code comments and logs are in Vietnamese without diacritics; README.md gives a glossary and the correspondence between content, scripts and data files. Licences: code (code/, figures/scripts/, tools/) under the MIT licence; data, figures and documentation under CC BY 4.0.