[sfreeman422]

Summary\n- Upgrade the repository and workspace Node.js requirements to 24.22.1.\n- Update CI/deploy workflows, Docker build image, lockfile, and README.\n\n## Validation\n- All backend and frontend tests passed.

[Copilot]

🔵 Needs a closer look

The Docker release stage must guarantee a runtime containing Node.js 24.22.1 rather than relying on a floating image tag.

No open issues 🎉

What changed in this PR

This pull request upgrades the repository’s supported Node.js version to 24.22.1 across development, package requirements, CI, deployments, Docker configuration, and documentation.

Changes:

• Updates root and workspace Node.js engine requirements and .nvmrc.
• Updates README prerequisites and CI/deployment workflow versions.
• Updates Docker build configuration and lockfile metadata.

File	Description
README.md	Documents Node.js 24.22.1 as the development prerequisite.
packages/​frontend/​package.json	Updates the frontend Node.js engine requirement.
packages/​backend/​package.json	Updates the backend Node.js engine requirement.
packages/​backend/​Dockerfile	Uses Node.js 24.22.1 for builds; the release stage still uses a floating runtime tag that does not guarantee 24.22.1.
package.json	Updates the root Node.js engine requirement.
package-lock.json	Synchronizes workspace engine metadata.
.nvmrc	Sets the repository-managed Node.js version to 24.22.1.
.github/​workflows/​deploy.yml	Updates the backend deployment Node.js version.
.github/​workflows/​deploy-frontend.yml	Updates the frontend deployment Node.js version.
.github/​workflows/​ci.yml	Updates Node.js versions used in CI and Docker jobs.

_{Review effort: Lite}