Upgrade Node.js and Fix Breaking Changes

A systematic approach to upgrading Node.js while handling breaking changes and deprecated APIs.

## Steps:

1. Check current Node.js version: node -v

2. Review Node.js release notes for breaking changes between versions.

3. Update .nvmrc or package.json engines field to target new Node version.

4. Install new Node version: nvm install 20 (or desired version)

5. Run tests and identify failures caused by breaking changes.

6. Ask Copilot: 'Update this code to be compatible with Node.js 20' for failing modules.

7. Update deprecated APIs (e.g., crypto.createCipher → crypto.createCipheriv).

8. Check native dependencies: rebuild native modules with npm rebuild.

9. Update Docker base image and CI/CD pipelines to use new Node version.

10. Deploy to staging, monitor for runtime errors, then roll out to production.