Have a look also at https://www.printables.com/model/268580-hadley-telescope-off...

the smaller something of that type is, the harder to make it durable (I think)

as a kernel developer, I use LLMs for some tasks, but can say it is not there yet to write real kernel space code

you may be able to create dirs as input, and watch some others as output

not really. cadquery started as a freecad workbench, but moved out a long while ago. So current cadquery isn't usable inside freecad (which is a shame).

also worth a look: build123d