gezepi

It's a sailboat.

I use VScodium with some plugins. But writing in any editor and running the typst executable with the "watch" argument is also an option. That way as soon as you overwrite the source file a new PDF is generated. In that case I use Okular which auto refreshes when the open document changes.

1. It hasn't affected my ability to use a normal keyboard. Using my laptop to type occasionally probably helps with this.
2. Can't help you, I stuck with QWERTY
3. My favorite feature of my ergo keyboard is the fact that it is split, so I could see the appeal of a split but otherwise normal keyboard. But, I would recommend sticking with the Moonlander. It took me 2 weeks until I was comfortable typing after I switched. Not fast mind you, just comfortable. Then maybe another month until I didn't have to look down for special keys. Definitely a time investment, but worth it in my opinion.

I tend to use glass jars for this. They are reusable and recyclable, you can see what's in them, they protect what's inside from getting crushed, and they're free if you repurpose jars that food came in.

LibreCAD could be worth considering. I don't think it's possible to update dimensions in it though so I expect it would be tedious in a large project like a home remodel.

There are other note apps that can sync with Nextcloud. I settled on Quillpad because of its checklist functionality, though admittedly it's not perfect.

I've got a Keyboardio that has the main layer change key as one that you press with your palm. I'm glad it's there, thumb keys are too precious to waste on that.

It took me about two weeks to get fully comfortable going from a normal keyboard to a Keyboardio. It was a long two weeks but I'm really glad I did it. And so are my fingers.

Is that an airplane seat in a house?

Exactly. The correct way to answer is to not "yes" or "no".

It doesn't lead to a destination, and maybe isn't even a riddle, but a sentence I like is:

Is your answer to this question the same as if I had asked you to give me a dollar?

This isn't a full answer to your question, but as for where secondhand keyboards are bought/sold, I bought one from eBay a while back.