feat: GitHub Actions 배포 워크플로우 Matrix 전략 도입 및 Blue-Green 배포 구조 개선 #415

	name: PR Title Labeler

	on:
	pull_request_target:
	types: [opened, edited, reopened]

	jobs:
	label-pr:
	runs-on: ubuntu-latest

	permissions:
	contents: read
	pull-requests: write

	steps:
	- name: Label PR based on title
	uses: actions/github-script@v7
	with:
	script: \|
	const prTitle = context.payload.pull_request.title;

	const labelMap = [
	{ pattern: /^feat:/i, label: '✨ feat' },
	{ pattern: /^fix:/i, label: '🐞 fix' },
	{ pattern: /^chore:/i, label: '⚙️ chore' },
	{ pattern: /^docs:/i, label: '📃 docs' },
	{ pattern: /^refactor:/i, label: '🔨 refactor' },
	{ pattern: /^test:/i, label: '✅ test' },
	{ pattern: /^style:/i, label: '🎨 style' }
	];

	const labelsToAdd = Array.from(
	new Set(
	labelMap
	.filter(entry => entry.pattern.test(prTitle))
	.map(entry => entry.label)
	)
	);

	if (labelsToAdd.length > 0) {
	await github.rest.issues.addLabels({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	labels: labelsToAdd
	});
	core.info(`Added labels: ${labelsToAdd.join(', ')}`);
	} else {
	core.info('No matching labels found for PR title.');
	}

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