Is there not a VCS that will handle .scpt and .scptd files directly?
What about DropBox as a Simple VCS?
FWIW, I use DropBox, which keeps a version of each file for 30, 90, 120, or unlimited days, depending on your account type. Even the free version provides 30 days.
While not nearly as powerful as a full-blown VCS, I have found it works very well for me, making it easy to find any restore any file, including .scpt and scptd files. The good part is I don’t have to do anything – it automatically saves a historical copy every time I save the file.
All of my AppleScript files, including script libraries, are in the DropBox folder on my Mac. So they are all auto-backed up, but also immediately available on all of my Macs.