Fix up some older nonsense in CI/node

[mattgodbolt]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the CI configurations for Node.js by aligning version numbers and streamlining related scripts and documentation. Key changes include:

• Upgrading Node.js versions in package.json, Dockerfile, and GitHub Actions.
• Consolidating and renaming test and lint scripts in package.json and associated documentation in CLAUDE.md.
• Updating runner images and job names in the GitHub workflows.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
package.json	Updated Node engine version and streamlined scripts including lint commands.
Dockerfile	Upgraded Node image version from 20-alpine to 22-alpine to match package.json.
CLAUDE.md	Revised documentation to reflect new test and coverage script commands.
.github/workflows/test-and-deploy.yml	Switched to ubuntu-24.04 runners and updated Node.js version and job names.

Comments suppressed due to low confidence (2)

.github/workflows/test-and-deploy.yml:7

• Ensure that upgrading to Ubuntu 24.04 along with Node.js version 22 does not introduce compatibility issues with any of the actions or dependencies used within the workflow.

runs-on: ubuntu-24.04

CLAUDE.md:16

• [nitpick] Verify that the newly added CPU test command and other test script updates are well documented with context on when and why to use them.

+ `npm run test:cpu` - Run CPU compatibility tests

[Copilot]

[nitpick] The 'lint' script now always applies fixes. Consider retaining a separate non-fix lint command to allow running lint checks without making automatic modifications.

[mattgodbolt]

that's what ci-checks does