Persist deleter program

Does anyone know how I could make a program that would delete any .persist files in the directory it's placed in?

I'll assume you mean using Construct

You could use the FileSpy plugin to monitor a directory (folder!) and the File plugin to delete the offending files. You could even use the CommonDialog plugin to select a folder, and you could pick a folder to monitor.

OR you could type ".persist" in the search field of your work folder and then hit ctrl+e to select all and del to delete