I have a studio garage that I love to work in with the door open for the heat. My cat joins me. The door to the garage has a car door in it (and the litter Box is out there) so the cat cannot simply be excluded.

Up until this point a baby gate has been enough to keep the cat indoors but she was suddenly motivated to jump over it today.

What are some semi permanent ways of screening in this space? How would you tackle it?

Would love to have to be accessible enough to allow a lawn mower through, but that's it, no need for a car.

I'm at a loss on how to proceed, all cat gates are relatively narrow, mosquito nets are too flimsy...