I'm looking for what you're describing, some way to remote unlock a system. Is this the wiki page you're talking about?

https://wiki.archlinux.org/title/Dm-crypt/Specialties#Remote...

However, I'd prefer that the box is not on the general internet, but only over my tailscale net. I wonder if tailscale will also fit in the initramfs...

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xrisk 4 days ago | parent [-]

Yeah I was looking at that page. Found this btw: https://github.com/darkrain42/tailscale-initramfs

	▲	epistasis 4 days ago \| parent [-]
		Thanks! I'm just getting back into Linux boot issues for the first time in multiple decades, and boy is it different than I remember. It's pretty incredible to be able to dump all this stuff directly into the boot system. Now to see what Omarchy has done to give the fancy LUKS password entry...