be explicit about needing nodejs v22+

Author: williamstein

src/package.json

@@ -2,6 +2,9 @@
   "name": "cocalc",
   "version": "1.0.0",
   "description": "CoCalc: Collaborative Calculation",
+  "engines": {
+    "node": ">=22"
+  },
   "scripts": {
     "make": "pnpm run build",
     "make-dev": "pnpm run build-dev",

src/packages/backend/package.json

@@ -2,6 +2,9 @@
   "name": "@cocalc/backend",
   "version": "1.22.2",
   "description": "CoCalc backend functionality: functionality used by either the hub, the next.js server or the project.",
+  "engines": {
+    "node": ">=22"
+  },
   "exports": {
     "./*": "./dist/*.js",
     "./database": "./dist/database/index.js",
@@ -14,10 +17,7 @@
     "./auth/tokens/*": "./dist/auth/tokens/*.js",
     "./podman": "./dist/podman/index.js"
   },
-  "keywords": [
-    "utilities",
-    "cocalc"
-  ],
+  "keywords": ["utilities", "cocalc"],
   "scripts": {
     "preinstall": "npx only-allow pnpm",
     "clean": "rm -rf dist node_modules",
@@ -36,12 +36,7 @@
     "conat-persist": "DEBUG=cocalc:*  node ./bin/conat-persist.cjs",
     "conat-test-server": "node ./bin/conat-test-server.cjs"
   },
-  "files": [
-    "dist/**",
-    "bin/**",
-    "README.md",
-    "package.json"
-  ],
+  "files": ["dist/**", "bin/**", "README.md", "package.json"],
   "author": "SageMath, Inc.",
   "license": "SEE LICENSE.md",
   "dependencies": {

src/packages/lite/package.json

@@ -25,6 +25,9 @@
   "bin": {
     "cocalc-lite": "./bin/start.js"
   },
+  "engines": {
+    "node": ">=22"
+  },
   "author": "SageMath, Inc.",
   "license": "SEE LICENSE.md",
   "dependencies": {