the obsidian-git plugin. Auto commits and pulls/push every x minutes. Works great for me, I get full version control and works on all my platforms (Linux, Windows, Android). You just need to be careful with your .gitignore and add at least .obsidian/workspace.json to prevent conflicts.

Probably not suitable if you store larger files, but after a year of daily usage with tons of small images I’m still below 150 MB.

do you have any source that would provide 4k content? I feel like even 720p is good enough at a decent bitrate. But it also depends on the size of the screen and the distance to it.

2 kW is a ton of power required to keep a single room warm assuming you ran that continuously.