External Editor / Filepaths stable?

I’m using Webstorm as my external editor.

To enable a couple of IDE features, it needs a project containing all the necessary files. It’s not critical to add the files to the project, but I’m wondering of the file paths and names are stable or if they change. In the latter case a project setup would be impossible.

On my Mac the path looks like:

An other file uses the same path but instead of 1001 part, it’s using 1000. Why not put all files from one BBS project at the same place?