[FEAT] 온보딩(독서 취향 테스트) API 구현 #13

	name: PR Assignee & 전체 Collaborators 리뷰 요청

	on:
	pull_request:
	types: [opened, reopened, ready_for_review]

	permissions:
	contents: read # repos.listCollaborators 호출용
	issues: write # 이슈(Assignee) 추가용
	pull-requests: write # 리뷰어 요청용

	jobs:
	assign-and-request:
	runs-on: ubuntu-latest
	steps:
	- name: Assign 및 리뷰어 일괄 요청
	uses: actions/github-script@v7
	with:
	script: \|
	const { owner, repo } = context.repo;
	const prNumber = context.payload.pull_request.number;
	const prAuthor = context.payload.pull_request.user.login;

	// 1) Assignee 지정 (PR 연 사람을 지정)
	await github.rest.issues.addAssignees({
	owner,
	repo,
	issue_number: prNumber,
	assignees: [prAuthor]
	});

	// 2) 리포지토리 Collaborators 전체 조회
	const collaborators = await github.paginate(
	github.rest.repos.listCollaborators,
	{ owner, repo, affiliation: 'all' }
	);
	const allLogins = collaborators.map(u => u.login);

	// 3) PR 작성자만 제외
	const reviewers = allLogins.filter(login => login !== prAuthor);
	if (reviewers.length === 0) {
	core.info('등록할 리뷰어가 없습니다.');
	return;
	}

	// 4) 최대 15명씩 나눠서 리뷰 요청 (API 제한)
	const chunkSize = 15;
	for (let i = 0; i < reviewers.length; i += chunkSize) {
	const chunk = reviewers.slice(i, i + chunkSize);
	await github.rest.pulls.requestReviewers({
	owner,
	repo,
	pull_number: prNumber,
	reviewers: chunk
	});
	}

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