Add reusable workflow to check external contributor status

.github/workflows/check-external-contributor.yml

@@ -0,0 +1,56 @@
+name: Check External Contributor
+
+on:
+  workflow_call:
+    inputs:
+      github_team_slug:
+        type: string
+        required: true
+        description: "GitHub team slug to check membership against (e.g., 'devs')"
+      label_name:
+        type: string
+        required: false
+        default: "external contributor"
+        description: "Label to add to PR if creator is not in the team"
+    secrets:
+      GITHUB_TOKEN:
+        required: true
+
+permissions:
+  pull-requests: write
+
+jobs:
+  check-contributor:
+    name: Check PR Creator Team Membership
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check if PR creator is in team
+        id: check-team
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            const { data: teams } = await github.rest.teams.listMembershipsForAuthenticatedUser();
+            const teamSlugs = teams.map(team => team.slug);
+            const teamSlug = '${{ inputs.github_team_slug }}';
+
+            const isMember = teamSlugs.includes(teamSlug);
+            console.log(`Looking for team: ${teamSlug}`);
+            console.log(`User's teams: ${teamSlugs.join(', ')}`);
+            console.log(`Is member: ${isMember}`);
+
+            core.setOutput('is_member', isMember);
+
+      - name: Add external contributor label
+        if: steps.check-team.outputs.is_member == 'false'
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            const labelName = '${{ inputs.label_name }}';
+            github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              labels: [labelName]
+            });
+            console.log(`Added label "${labelName}" to PR #${context.issue.number}`);