공통 GitWorkflow를 작성

.github/workflows/assign.yml

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+name: Assign issue creator
+
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  assign:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 이슈 발행자 등록
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const creator = context.payload.issue.user.login;
+            await github.rest.issues.addAssignees({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              assignees: [creator]
+            });

.github/workflows/close-issue-develop.yml

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+name: Auto Close Issues on dev merge
+
+permissions:
+  issues: write
+
+on:
+  pull_request:
+    types: [closed]
+
+jobs:
+  close-issues:
+    if: >
+      github.event.pull_request.merged == true &&
+      github.event.pull_request.base.ref == 'dev'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Close linked issues
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const prBody = context.payload.pull_request.body;
+            const issueLines = prBody.split('\n');
+
+            // 클로징 키워드가 있는 줄에서만 이슈 번호 추출
+            const closingKeywords = ['close', 'closes', 'closed', 'fix', 'fixes', 'fixed', 'resolve', 'resolves', 'resolved'];
+            const issuePattern = /#(\d+)/g;
+
+            for (const line of issueLines) {
+              const lower = line.toLowerCase();
+              if (closingKeywords.some(k => lower.includes(k))) {
+                let match;
+                while ((match = issuePattern.exec(line)) !== null) {
+                  const issue_number = parseInt(match[1]);
+                  await github.rest.issues.update({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number,
+                    state: 'closed'
+                  });
+                  console.log(`✅ Closed issue #${issue_number}`);
+                }
+              }
+            }

.github/workflows/pr.yml

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+name: PR Assignee & 전체 Collaborators 리뷰 요청
+
+on:
+  pull_request:
+    types: [opened, reopened, ready_for_review]
+
+permissions:
+  organization: read # orgs.listMembers 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)
+            try {
+              await github.rest.issues.addAssignees({
+                owner,
+                repo,
+                issue_number: prNumber,
+                assignees: [prAuthor]
+              });
+            } catch (e) {
+              core.warning(`Assignee를 지정할 수 없습니다: ${e.message}. PR 작성자가 collaborator가 아닐 수 있습니다.`);
+            }
+
+            // 2) 조직(Organization) 멤버 전체 조회
+            const members = await github.paginate(
+              github.rest.orgs.listMembers,
+              { org: owner }
+            );
+            const allLogins = members.map(u => u.login);
+
+            // 3) PR 작성자와 봇 계정 제외
+            const reviewers = allLogins.filter(
+              login => login !== prAuthor && !login.endsWith('[bot]')
+            );
+            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
+              });
+            }