Add branch management guidelines to CONTRIBUTING.md #11

	name: Format

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	format:
	name: Prettier
	runs-on: ubuntu-latest

	strategy:
	matrix:
	node-version: [20.x]

	steps:
	- uses: actions/checkout@v4

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v4
	with:
	node-version: ${{ matrix.node-version }}
	cache: 'npm'

	- name: Install dependencies
	run: npm ci

	- name: Check formatting
	id: format
	run: npm run format:check
	continue-on-error: true

	- name: Create Status Comment
	if: github.event_name == 'pull_request' && steps.format.outcome == 'failure'
	uses: actions/github-script@v7
	with:
	script: \|
	const message = `## Format Check Results\n\n❌ Prettier format check failed. Please run \`npm run format\` to fix formatting issues.`;

	github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: message
	});

	- name: Check for failures
	if: steps.format.outcome == 'failure'
	run: exit 1

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