feat: integrate Pi backend and Pi Web

pi-web/bin/node-version.js

@@ -0,0 +1,35 @@
+"use strict";
+
+const MIN_NODE_VERSION = "22.19.0";
+
+function parseNodeVersion(version) {
+  const match = /^v?(\d+)\.(\d+)\.(\d+)/.exec(version);
+  if (!match) return null;
+  return match.slice(1).map(Number);
+}
+
+function isNodeVersionSupported(version) {
+  const current = parseNodeVersion(version);
+  const minimum = parseNodeVersion(MIN_NODE_VERSION);
+  if (!current || !minimum) return false;
+
+  for (let index = 0; index < minimum.length; index += 1) {
+    if (current[index] > minimum[index]) return true;
+    if (current[index] < minimum[index]) return false;
+  }
+  return true;
+}
+
+function getUnsupportedNodeVersionMessage(version) {
+  return [
+    `Pi Web requires Node.js ${MIN_NODE_VERSION} or newer.`,
+    `Current Node.js version: ${version}.`,
+    "Upgrade Node.js and try again: https://nodejs.org/",
+  ].join("\n");
+}
+
+module.exports = {
+  MIN_NODE_VERSION,
+  getUnsupportedNodeVersionMessage,
+  isNodeVersionSupported,
+};