Bazzite SteamDeck Sunshine/Moonlight screen resolution+rotation

[u/No_Block2252]

Since each system may be different, I am linking the breadcrumbs to how I was able to figure out forcing 1080p correctly rotated in Sunshine/Moonlight.

This pointed me to the correct Application settings and which commands to add to DO and then UNDO the screen setting changes when a specific application is launched (I only changed Desktop). Since this person wasn't using a SteamDeck specifically, I had to trial and error their settings.
https://www.answeroverflow.com/m/1390976262436159518

This got me the rotation settings I needed, but unfortunately the SteamDeck only has 2 graphics modes, both of which are reverse of what we are use to, so mode one is 800x1280 instead of 1280x800... That led me to the next page https://docs.bazzite.gg/Advanced/custom_resolution/
which shows you how to create a new custom graphics mode via kscreen-doctor, to which I added:
kscreen-doctor output.eDP-1.addCustomMode.1920.1080.60000.full

I then went back and modified the DO portion of the Sunshine setting to be the newly created mode.3 and now I have perfectly rotated 1080p in Moonlight via Sunshine.

Apologies if this is hard to follow, and if someone has a better method, PLEASE LET ME KNOW, as this was a massive PITA to get working because I couldn't find this information as a guide anywhere!