This commit adds two archive artifacts, mona-1.4-orig.tar.gz and mona-1.4-modif.tar.gz, which appear to capture the upstream MONA 1.4 source and a locally modified variant. While there’s no code diff to inspect directly here, checking these into the repo likely supports reproducible patching, comparison, or packaging work around MONA. The practical effect is that the project now has the source inputs on hand for downstream build or integration tasks.