Sounds like GP is just in need for a G-Code to DXF converter when they mention "fringe stuff, cnc machine files from the 80's/90's" as answer to a sibling comment, though.

There are great FOSS CAD tools available nowadays (LibreCAD, FreeCAD, OpenSCAD etc.), especially for people who only need 2% of a feature set. But then again, I doubt that GP is really in need of a CAD software, or even writing one with the help of Gemini.