Refactor: add lint rules #1

	name: Lint & Format Check

	on:
	pull_request:
	push:
	branches:
	- prod
	- development

	jobs:
	lockfile-check:
	name: Lockfile Check
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Check for package-lock.json
	run: \|
	if [ -f "package-lock.json" ]; then
	echo "::error::package-lock.json detected! This project uses Yarn v1. Please remove package-lock.json and use 'yarn install' instead of 'npm install'."
	exit 1
	fi
	echo "✓ No package-lock.json found. Using Yarn as expected."

	lint:
	name: ESLint & Prettier
	runs-on: ubuntu-latest
	needs: lockfile-check

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'yarn'

	- name: Install dependencies
	run: yarn install --frozen-lockfile

	- name: Run ESLint
	run: yarn lint

	- name: Check Prettier formatting
	run: yarn format:check

	typecheck:
	name: TypeScript
	runs-on: ubuntu-latest
	needs: lockfile-check

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'yarn'

	- name: Install dependencies
	run: yarn install --frozen-lockfile

	- name: Run TypeScript check
	run: yarn typescript

	test:
	name: Tests
	runs-on: ubuntu-latest
	needs: lockfile-check

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'yarn'

	- name: Install dependencies
	run: yarn install --frozen-lockfile

	- name: Run tests
	run: yarn test

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