auto-close PRs

.github/workflows/close_pr.yml

@@ -0,0 +1,35 @@
+name: Auto-close PRs and guide to correct repo
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  auto-close:
+    runs-on: ubuntu-latest
+    if: github.repository_owner == 'zitadel'
+    steps:
+      - name: Comment and close PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const message = `
+            👋 **Thanks for your contribution!**
+            
+            This repository \`${{ github.repository }}\` is a read-only mirror of our internal development in [\`zitadel/zitadel\`](https://github.com/zitadel/zitadel).
+            Therefore, we close this pull request automatically, but submitting your changes to the main repository is easy:
+            1. Fork and clone zitadel/zitadel
+            2. Create a new branch for your changes
+            3. Pull your changes into the new fork by running `make login-pull LOGIN_REMOTE_URL=<your-typescript-fork-org>/typescript LOGIN_REMOTE_BRANCH=<your-typescript-fork-branch>`.
+            4. Push your changes and open a pull request to zitadel/zitadel
+            `.trim();
+            await github.rest.issues.createComment({
+                ...context.repo,
+              issue_number: context.issue.number,
+              body: message
+            });
+            await github.rest.pulls.update({
+                ...context.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });