chore: add hf frontmatter

.github/workflows/hf_sync.yml

@@ -13,7 +13,33 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config --global user.name "GitHub Action"
+          git config --global user.email "[email protected]"
+
+      - name: Prepend frontmatter to README
+        run: |
+          if [ -f README.md ] && ! grep -q "^---" README.md; then
+            FRONTMATTER="---
+          title: marimo learn
+          emoji: 🧠
+          colorFrom: blue
+          colorTo: indigo
+          sdk: docker
+          sdk_version: \"latest\"
+          app_file: app.py
+          pinned: false
+          ---
+
+          "
+            echo "$FRONTMATTER$(cat README.md)" > README.md
+            git add README.md
+            git commit -m "Add HF frontmatter to README" || echo "No changes to commit"
+          fi
+
       - name: Push to hub
         env:
           HF_TOKEN: ${{ secrets.HF_TOKEN }}
-        run: git push https://mylessss:[email protected]/spaces/marimo-team/marimo-learn main
+        run: git push -f https://mylessss:[email protected]/spaces/marimo-team/marimo-learn main