Unintuitive navigation controls

[yuhan0]

Discussed in #1210

I first posted about this in Discussions along with some ideas for improving the system, but I've since become convinced it's an actual issue that needs fixing.

Here's a short screen recording illustrating the problem in an easily reproducible situation.
(The only shortcuts used are window --focus west and window --focus east represented by the ← → arrows in the windows.)

yabai-nav2.mp4

Stage 1:
Focusing → then ← brings me to a different window than I started on. Not a big deal since the situation is 'ambiguous' due to the two possible targets. If Yabai resolves this consistently (it does not) I could get used to this.

 ┌──┬──┐
 │  │← │
 ├──┤  │
 │→ │  │
 └──┴──┘

Stage 2:
Everything works as expected

 ┌──┬──┐
 │  │  │
 ├──┼──┤
 │→ │← │
 └──┴──┘

Stage 3:
A small change from stage 2, yet now ← brings me to the window ? for seemingly no reason. This is the biggest issue which I run into on a daily basis, and it makes directional focusing/manipulation of windows hard to understand.

┌─┬─┬──┐
│ │?│  │
├─┴─┼──┤
│→  │← │
└───┴──┘

The linked discussion goes into a little more detail on possible solutions. I'd be willing to help contribute a fix, but unsure if others are facing the same issues.

[FelixKratz]

This bothered me as well, but can be fixed very easily: FelixKratz@15adc07

[koekeishiya]

Implemented better detection logic on master.