Upgrade Node.js from v22 to v24 (Active LTS)

[Tim020]

Problem

Dependabot is failing to update npm dependencies with EBADENGINE errors because it uses Node v24.12.0 and npm 11.7.0, which conflicts with our strict engine requirements (Node <23, npm <11).

Example error:

npm error code EBADENGINE
npm error engine Unsupported engine
npm error notsup Required: {"npm":">=10.0.0 <11","node":">=22.0.0 <23"}
npm error notsup Actual:   {"node":"v24.12.0","npm":"11.7.0"}

Solution

Upgrade DigiScript to use Node v24.12.0 (Active LTS "Krypton") and npm 11.x across all environments:

• Local development (.nvmrc, package.json)
• Docker builds (Dockerfile)
• CI/CD (GitHub Actions workflows)
• Documentation

Implementation Plan

• Update local configuration files
• Test build, linting, and tests locally with Node 24
• Update Dockerfile and CI/CD workflows
• Update documentation
• Create PR targeting dev branch
• Verify Dependabot can update dependencies after merge

Follow-up Work

After Node 24 upgrade is complete, create separate issues for:

• ESLint 9/10 upgrade (official Node 24 support + flat config)
• Vite 7.x upgrade (Vite 4 is EOL)
• Migrate node-sass to sass (Dart Sass)

Refs: https://github.com/dreamteamprod/DigiScript/actions/runs/20765825791/job/59631580051