chore: add temporary Cloud Mail issue trigger

.github/workflows/temp-cloudmail-issue-trigger.yml

@@ -0,0 +1,35 @@
+name: Temporary Cloud Mail issue trigger
+
+on:
+  issues:
+    types:
+      - edited
+
+permissions:
+  contents: write
+
+jobs:
+  apply-upgrade:
+    if: github.event.issue.number == 7
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout main
+        uses: actions/checkout@v4
+        with:
+          ref: main
+          fetch-depth: 0
+
+      - name: Apply Cloud Mail upgrade
+        run: python tools/apply_cloudmail_upgrade.py
+
+      - name: Commit upgrade and clean temporary files
+        shell: bash
+        run: |
+          rm -f tools/apply_cloudmail_upgrade.py
+          rm -f .github/workflows/temp-cloudmail-upgrade.yml
+          rm -f .github/workflows/temp-cloudmail-issue-trigger.yml
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add grok_register_ttk.py config.example.json README.md tools/apply_cloudmail_upgrade.py .github/workflows/temp-cloudmail-upgrade.yml .github/workflows/temp-cloudmail-issue-trigger.yml
+          git commit -m "feat(mail): add optional Cloud Mail no-recipient provider"
+          git push origin HEAD:main