There were a few comments here about running AirGap Vault in an Android Emulator or VM.
The security when running AirGap Vault on a mobile device (Android or iOS) comes from the built in secure element hardware chip. It allows for strong encryption that the user can unlock easily using biometrics or the PIN code. If you run AirGap Vault in an emulator, this secure chip will be emulated, so you don't really gain security.
Does that also apply for Type 1 Hypervisor (such as KVM and Xen) which perform CPU/host passthrough?
I'm not sure what exactly you mean. I'm not very familiar with how emulators or VMs work, but if the device doesn't have a secure element chip, then it also applies, no matter what kind of emulator you use.
I incidentally have a Debian 11 VM ready on Virtualbox, with GNOME GUI. It does not have an emulator or any other bloat application on it. Yes, I would appreciate the automated setup script being revived for it. Let me know if you need any bug fixes in the script because I'd be happy to help.
Just tell me how much storage space does the setup script require (including temporary storage) because this VM was created a while ago with a crazy partition layout and I only have 2GB storage free on the root filesystem. So I want to know whether it will work with that little space or if it even works on newer Debian so I can make a new installation if needed.
Once I have time I can look into it again, but it has been a few years, so I don't remember how much it space it uses.
But just to make it clear, as I mentioned earlier, I don't see many advantages of running AirGap Vault in a VM. The distro we made isn't supposed to be run as a VM, but rather on a dedicated computer that doesn't have an operating system installed. Our AirGap distro will be the operating system on that system. Once you boot, it boots directly into AirGap Vault and has no other functionality and does not use any persistent storage.