I just released 0.0.3 https://github.com/benapetr/XenAdminQt/releases/tag/v0.0.3-alpha it brings it even closer to the original client, with packages for macos, debian12, debian13, ubuntu 22, ubuntu 24, Fedora 43, windows
From the xe help host-shutdown and xe help host-disable
"If no parameters to select hosts are given, the operation will be performed on all hosts."
I have a single host pool, so I can't test.