target (build sense)

A supported hardware platform — rpi5, rpi4, arm64-generic, x86_64-mini-pc, wsl2, macos-qemu, digitalocean, hetzner, vultr, linode, oracle-arm-free, fly-machines, fly-machines+gpu, plus accelerator variants like rpi5+hailo, rpi5+coral. Each has a Packer template (or a cloud-init recipe), a variant task file, and a smoke fixture. See Distribution → Hardware matrix.