Support relocatable custom install roots

root/usr/libexec/openclaw-node.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+# Shared OpenClaw Node.js runtime/version helpers.
+
+oc_normalize_node_version() {
+	local version="${1:-}"
+	local old_ifs
+
+	[ -n "$version" ] || return 1
+	case "$version" in
+		v*) version="${version#v}" ;;
+	esac
+	case "$version" in
+		''|*[!0-9.]*) return 1 ;;
+	esac
+
+	old_ifs="$IFS"
+	IFS=.
+	set -- $version
+	IFS="$old_ifs"
+
+	[ "$#" -eq 3 ] || return 1
+	for part in "$1" "$2" "$3"; do
+		case "$part" in
+			''|*[!0-9]*) return 1 ;;
+		esac
+	done
+
+	printf '%s.%s.%s\n' "$1" "$2" "$3"
+}
+
+oc_node_version_ge() {
+	local lhs rhs
+	local old_ifs
+	local lhs_major lhs_minor lhs_patch
+	local rhs_major rhs_minor rhs_patch
+
+	lhs=$(oc_normalize_node_version "${1:-}") || return 1
+	rhs=$(oc_normalize_node_version "${2:-}") || return 1
+
+	old_ifs="$IFS"
+	IFS=.
+	set -- $lhs
+	lhs_major="$1"
+	lhs_minor="$2"
+	lhs_patch="$3"
+	set -- $rhs
+	rhs_major="$1"
+	rhs_minor="$2"
+	rhs_patch="$3"
+	IFS="$old_ifs"
+
+	[ "$lhs_major" -gt "$rhs_major" ] && return 0
+	[ "$lhs_major" -lt "$rhs_major" ] && return 1
+	[ "$lhs_minor" -gt "$rhs_minor" ] && return 0
+	[ "$lhs_minor" -lt "$rhs_minor" ] && return 1
+	[ "$lhs_patch" -ge "$rhs_patch" ]
+}
+
+oc_read_node_version() {
+	local node_bin="${1:-}"
+	local version
+
+	[ -n "$node_bin" ] || return 1
+	[ -x "$node_bin" ] || return 1
+
+	version=$("$node_bin" --version 2>/dev/null) || return 1
+	oc_normalize_node_version "$version"
+}