I would propose to get a M1 Mac mini. Additionally, if you want to support x86, i would virtualize MacOS on a (your) regular PC, for example with Qemu/KVM or Pr

I would propose to get a M1 Mac mini. Additionally, if you want to support x86, i would virtualize MacOS on a (your) regular PC, for example with Qemu/KVM or Proxmox, since it will eventually fade away.