Flip-down Sliding-Door Stop

A friend mentioned their cats were pretty good at opening their interior sliding door. They described how a flip-down retainer could probably keep it in position. What I came up with was a slim assembly that can stay out of the way until you want to use it, with a fingercatch and some bumps and detents to retain it in a stowed position when not in use.

It's quite rugged, even made with PLA - although I wouldn't suggest it as a security apparatus. I realized it could also be used as a flip-do