MegaBasterd folder link patch

This is a build of https://github.com/SeanCassiere/tonikelope-megabasterd/tree/fix/mega-folder-link-parsing (tonikelope/megabasterd#743). I used Java 21.0.7.6 + Maven on a Windows 11 VM to make this. (mvn clean install)

Warning: As stated by the author of the patch, this patch was vibe-coded. However, despite me not knowing Java, the code looks simple and sane enough. Use at your own risk.