Finite Multiset Codes and Affine Lattice Restrictions Minimal TeX source package for Hexagon preparation. Main source: main.tex Compiler: pdfLaTeX; run twice to resolve references. Commands: pdflatex -interaction=nonstopmode -halt-on-error main.tex pdflatex -interaction=nonstopmode -halt-on-error main.tex Dependencies: standard article class; geometry, fontenc, lmodern, amsmath, amssymb, amsthm, booktabs, hyperref, and microtype packages from TeX Live. The bibliography is embedded in main.tex. There are no external figures, BibTeX files, custom styles, or program-code dependencies. Full reproducibility code and exact certificates are separate at: https://github.com/dapyle11/finite-multiset-codes Author details, AI contribution disclosure, originality caveats, and scientific caveats are preserved. No external submission has been performed. The manuscript and TeX source are offered under CC BY 4.0 to the extent applicable rights exist. See LICENSE_STATUS.md for scope and qualifications.