Install Node.js and mystmd for GHA

.github/workflows/ci_publish.yml

@@ -27,6 +27,14 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Install mystmd
+        run: npm install mystmd
+
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
@@ -45,6 +53,58 @@ jobs:
           publish_dir: ./_build/html/
           commit_message: ${{ github.event.head_commit.message }}
 
+      - name: Create issue or comment if run fails
+        if: failure()
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const title = `❌ Job failed: ${context.job} Run #${context.runNumber}`;
+
+            // Search for existing open issue with the same title
+            const issues = await github.rest.issues.listForRepo({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: 'open',
+              labels: 'workflow-failure',
+              per_page: 100
+            });
+
+            const existingIssue = issues.data.find(issue => issue.title === title);
+
+            const body = `## Job Failed
+
+            **Job:** ${context.job}
+            **Workflow:** ${context.workflow}
+            **Event:** ${context.eventName}
+            **Run ID:** ${context.runId}
+            **Run Number:** ${context.runNumber}
+            **Run Attempt:** ${context.runAttempt}
+            **Ref:** ${context.ref}
+            **Ref Name:** ${context.refName}
+            **SHA:** ${context.sha}
+            **Short SHA:** ${context.sha.substring(0, 7)}
+
+            [View run details](${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId})`;
+
+            if (existingIssue) {
+              // Add comment to existing issue (for retry attempts)
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: existingIssue.number,
+                body: body
+              });
+            } else {
+              // Create new issue
+              await github.rest.issues.create({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                title: title,
+                body: body,
+                labels: ['workflow-failure']
+              });
+            }
+
   deploy_notebooks:
     if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
     name: Deploy deployed_notebook branch
@@ -62,4 +122,4 @@ jobs:
           git rm --cached -r .
           git add --pathspec-from-file=deployed_notebooks_manifest.in --force
           git commit -m "Deploy notebooks for commit ${gith}"
-          git push origin deployed_notebooks --force
+          git push origin deployed_notebooks --force

.github/workflows/ci_tests_run_notebooks.yml

@@ -65,6 +65,14 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Install mystmd
+        run: npm install mystmd
+
       - name: Setup Python
         uses: actions/setup-python@v6
         with: