Merry Christmas, all!
Is Forge the best way to make a module so that other's can't edit it?
Or is it possible to create a module via the SS5 internal tools which others won't be able to change?
If you have an SS5 user module that you want to "lock," you need to:
1. Go to User > Export module and export your user module. SS writes the module content out as a Forge input text file.
2. Use Forge to build a module based on the exported content, and make sure that you don't have the "Make module user-editable" option checked.