Posted the files for this to: https://github.com/WillAdams/Design_Into_3D/tree/master/box/fitted
The OpenSCAD file with customizer is available at: https://www.thingiverse.com/thing:3638564
The TeX files will also need JSON.lua from: https://github.com/rxi/json.lua
If you run the .tex file it will make a PDF, the designinto3dboxfittedfigures.mp file will make separate SVGs for the lid and the box.
Next up is working out making SVGs with filled tints to indicate cut depth, then using TPL: https://tplang.org/ to make ready to cut toolpaths.