Raise Node.js baseline to 22 and document Node release EOL reference (#620)

* Raise Node.js baseline to v22 and document EOL reference

Co-authored-by: jbampton <418747+jbampton@users.noreply.github.com>

* Restore lockfile libc metadata removed during local install

Co-authored-by: jbampton <418747+jbampton@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jbampton <418747+jbampton@users.noreply.github.com>

Author: Copilot

README.md

@@ -261,7 +261,7 @@ Want to contribute to the project code or test your profile locally? Here's how
 
 ### Prerequisites
 
-- **Node.js**: Version 20.x or higher ([Download](https://nodejs.org/))
+- **Node.js**: Version 22.x or higher ([Download](https://nodejs.org/)); check the Node.js release EOL schedule at [endoflife.date/nodejs](https://endoflife.date/nodejs)
 - **npm**: Comes with Node.js
 - **Python**: Version 3.13 or higher for the repository's `uv sync`-managed dev tools
 - **uv**: Recommended for installing Python dev tools

package-lock.json

@@ -54,6 +54,6 @@
   },
   "homepage": "https://github.com/NextCommunity/NextCommunity.github.io#readme",
   "engines": {
-    "node": ">=20.0.0"
+    "node": ">=22.0.0"
   }
 }