Build and publish only linux/amd64 and windows/amd64

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

deploy/setup.sh

@@ -51,9 +51,7 @@ command -v systemctl > /dev/null 2>&1 || die "this needs a systemd-based Linux (
 
 case "$(uname -m)" in
 	x86_64 | amd64) ARCH=amd64 ;;
-	aarch64 | arm64) ARCH=arm64 ;;
-	armv7* | armv6* | arm) ARCH=arm ;;
-	*) die "unsupported CPU: $(uname -m)" ;;
+	*) die "releases are published for x86-64 Linux only, not $(uname -m); build it yourself with: TARGETS=linux/arm64 sh deploy/build.sh" ;;
 esac
 
 pkg_install() { # installs packages with whichever package manager there is