build: require Node 22.13 or newer

[robert7]

Summary

• drop end-of-life Node.js 20 and require Node.js 22.13.0 or newer
• use Node.js 24 LTS as the local development default
• validate Node availability and the minimum version in node-check.sh
• test Node.js 22.13.0 and 24 through the reusable CI matrix
• update installation, development, troubleshooting, and changelog guidance

Tests

• focused Node policy tests: 8 passed
• ./code-quality.sh: 33 test files, 559 tests passed; coverage passed
• npm run build
• bash -n node-check.sh
• workflow YAML parse
• git diff --check

Dependency

• consumes the immutable workflow commit from ci: add configurable Node matrix workflows#6

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[gemini-code-assist]

Code Review

This pull request updates the minimum required Node.js version to 22.13.0 and recommends Node.js 24 LTS for local development, updating the configuration files, documentation, and the node-check.sh script accordingly. Unit tests have also been added to verify the script and configuration alignment. The review feedback highlights robustness issues in the shell script's version parsing and .nvmrc reading, as well as a resource leak in the unit tests due to un-cleared temporary directories.

Important

The consumer version of Gemini Code Assist on GitHub is being sunset. Starting June 18, 2026, new organization installations will be blocked, and all code review activity will officially cease on July 17, 2026.
For more details on the timeline and next steps, please review the Help Documentation.