refactor: replace CI failure email notification with GitHub issue creation

Author: sunnylqm

.github/workflows/ci-failure-email.yml

@@ -1,4 +1,4 @@
-name: CI Failure Email
+name: CI Failure Issue
 
 on:
   workflow_run:
@@ -10,20 +10,35 @@ on:
 jobs:
   notify:
     if: contains(fromJSON('["failure","timed_out","action_required"]'), github.event.workflow_run.conclusion)
+    permissions:
+      issues: write
     runs-on: ubuntu-latest
     steps:
-      - name: Send failure email
-        uses: dawidd6/action-send-mail@v16
-        with:
-          connection_url: ${{ secrets.CI_FAILURE_MAIL_CONNECTION }}
-          subject: "[CI failed] ${{ github.repository }} / ${{ github.event.workflow_run.name }}"
-          to: sunnylqm@gmail.com
-          from: "GitHub Actions <sunnylqm@gmail.com>"
-          body: |
-            Repository: ${{ github.repository }}
-            Workflow: ${{ github.event.workflow_run.name }}
-            Conclusion: ${{ github.event.workflow_run.conclusion }}
-            Branch: ${{ github.event.workflow_run.head_branch }}
-            Commit: ${{ github.event.workflow_run.head_sha }}
-            Actor: ${{ github.event.workflow_run.actor.login }}
-            Run: ${{ github.event.workflow_run.html_url }}
+      - name: Create failure issue
+        env:
+          GH_TOKEN: ${{ github.token }}
+          REPOSITORY: ${{ github.repository }}
+          WORKFLOW_NAME: ${{ github.event.workflow_run.name }}
+          CONCLUSION: ${{ github.event.workflow_run.conclusion }}
+          HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
+          HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
+          ACTOR: ${{ github.event.workflow_run.actor.login }}
+          RUN_URL: ${{ github.event.workflow_run.html_url }}
+        run: |
+          body_file="$(mktemp)"
+          cat > "$body_file" <<EOF
+          @sunnylqm CI run failed.
+
+          Repository: $REPOSITORY
+          Workflow: $WORKFLOW_NAME
+          Conclusion: $CONCLUSION
+          Branch: $HEAD_BRANCH
+          Commit: $HEAD_SHA
+          Actor: $ACTOR
+          Run: $RUN_URL
+          EOF
+
+          gh issue create \
+            --repo "$REPOSITORY" \
+            --title "[CI failed] $REPOSITORY / $WORKFLOW_NAME" \
+            --body-file "$body_file"