I tested it out, and it almost works. It wouldn't start at first, with a "The application can't be opened" message. I went to troubleshoot, and what I found was that the actual binary wasn't marked as executable. On mac or any other unix that can be fixed from the command line manually with: "chmod +x ./Magirune2.app/Contents/MacOS/Magirune\ 2". I don't know how you'd fix that from a Windows machine or in your build process though.
After that it worked fine, with just one exception. The keybinding is slightly off for some reason. The dialogs in this build don't respond to the 'z' key, but are dismissed with the 'x' key instead. Menu is still bound to 'z' and drink potions is still 'x', so that's a little weird. Thank you for your efforts!