chore: update default Node.js from 22 to 24

[dirkwa]

Summary

• Update recommended Node.js version from 22 to 24
• Raise minimum required version from >=18 to >=20
• Update .nvmrc, tsconfig.base.json (@tsconfig/node24), and package.json engines
• Remove legacy Node 6 Array.includes runtime check (proper semver check in version.ts)
• Document breaking changes: drops armv7 (32-bit ARM) and Windows x86 support
• Update installation docs including 64-bit Raspberry Pi OS requirement
• Fix several pre-existing typos and grammar issues in the RPi installation guide

Notes

• OpenSSL 3.5 (bundled with Node 24) reviewed — no impact on Signal K crypto (RSA-2048 self-signed certs, HMAC JWT)

@KEGustafsson please feel free to commit into this PR

• Docker image matrix changes are out of scope 
• Update CI workflows (release.yml, build-docker.yml npm build step) to use Node 24 out of scope 

[dirkwa]

@KEGustafsson please feel free to commit into this PR.

[KEGustafsson]

Document breaking changes: drops armv7 (32-bit ARM) and Windows x86 support

What do you mean with Windows x86?

[KEGustafsson]

Can you remove build pipelines from here, so PR is split to SK core changes and I'll do docker pipes separately.

[dirkwa]

Windows x86 = outdated 32 bit windows

As maintainer just push to this Repo/PR

[dirkwa]

FYI

With the switch to node 24 we will loose the support of the 32bit Victron Cerbo GX.

node 22 is the final version for that device.

[sbender9]

We definitely can't stop supporting the Cerbo. Pretty large user base there.

But this is only changing the recommended version, right?

[tkurki]

22 is LTS until April 2027. I don’t think there’s anything pressing us to explicitly push minimum version beyond that for some time.

Naturally the whole software stack will continue to evolve, so a clock is ticking somewhere.

Node-RED on Venus is in the same bind.

[KEGustafsson]

Even npm package is build using Node v24 it can be installed to v22 fine. Mainly affecting to docker images which have node v24 bundled in it.

Isn't Victron using npm packages, not docker images?

[tkurki]

Yes, nothing to do with docker images.