[codex] Add GitHub Actions CI #3

	name: CI

	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	server:
	name: Server lint and unit tests
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: server
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set up Node
	uses: actions/setup-node@v4
	with:
	node-version: 20
	cache: npm
	cache-dependency-path: server/package-lock.json

	- name: Install server dependencies
	run: npm ci --ignore-scripts

	- name: Run server lint
	run: npm run lint

	- name: Run server unit tests
	run: npm test

	client:
	name: Client lint and unit tests
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: client
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set up Node
	uses: actions/setup-node@v4
	with:
	node-version: 14.21.3
	cache: npm
	cache-dependency-path: client/package-lock.json

	- name: Install client dependencies
	run: npm ci

	- name: Run client lint
	run: npm run lint

	- name: Run client unit tests
	run: CI=true npm test -- --watchAll=false --passWithNoTests

	cypress:
	name: Cypress
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set up Node
	uses: actions/setup-node@v4
	with:
	node-version: 20
	cache: npm
	cache-dependency-path: package-lock.json

	- name: Install root dependencies
	run: npm ci

	- name: Run Cypress
	run: npm run cypress:run

Provide feedback