feat: add test:iso command to run.sh for VM testing

Add test:iso command to run.sh that delegates to test-iso.sh for libvirt/virsh-based ISO testing. Keep test functionality accessible through main run.sh interface while maintaining host-side execution requirements.

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

run.sh

@@ -22,6 +22,7 @@ usage() {
     echo "Commands:"
     echo "  build     Build Docker image"
     echo "  test      Run all tests"
+    echo "  test:iso  Test ISO with libvirt VM (runs on host)"
     echo "  lint      Run linting checks"
     echo "  clean     Clean build artifacts"
     echo "  shell     Interactive shell in build container"
@@ -136,6 +137,10 @@ else
 fi
 ' 2>&1 | tee /tmp/knel-iso-build.log
             ;;
+        test:iso)
+            shift  # Remove 'test:iso' from args
+            bash "${SCRIPT_DIR}/test-iso.sh" "$@"
+            ;;
         help|*)
             usage
             ;;