ci: build and push docker image to GHCR, misc CI improvements #1

	name: CI

	on:
	push:
	branches: ["master", "dev"]
	pull_request:
	workflow_dispatch:

	jobs:
	validate:
	name: Validate (lint, test, build)
	runs-on: ubuntu-latest
	env:
	NODE_VERSION: 22

	steps:
	- name: Checkout code
	uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0

	- name: Set up Node.js (${{ env.NODE_VERSION }})
	uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
	with:
	node-version: ${{ env.NODE_VERSION }}

	- name: Install dependencies
	run: npm ci

	- name: Lint
	run: npm run lint

	- name: Run tests and generate coverage
	run: npm run test -- --coverage

	- name: Build
	run: npm run build

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
	with:
	token: ${{ secrets.CODECOV_TOKEN }}

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