Don't know anything about that router, but you don't need to worry about the "brackets" thing. It does that on a PC as well - it's a text editor that allows you to look at the gcode file after it's been produced, and maybe tweak it, I suppose. However, just shut the editor and the file should be fine. I seem to remember that there is a setting somewhere in F360 (maybe on the post-process page?) that says whether or not you want Brackets to run automatically.