ci: replace peaceiris action with direct git push for clearer failure diagnosis

Author: XomaDev

.github/workflows/deploy-pages.yml

@@ -29,9 +29,12 @@ jobs:
         run: npm run build
 
       - name: Deploy to falconlang.github.io
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          personal_token: ${{ secrets.PAGES_DEPLOY_TOKEN }}
-          external_repository: falconlang/falconlang.github.io
-          publish_branch: main
-          publish_dir: tensor/dist
+        run: |
+          git clone https://x-access-token:${{ secrets.PAGES_DEPLOY_TOKEN }}@github.com/falconlang/falconlang.github.io.git _site
+          rsync -a --delete tensor/dist/ _site/
+          cd _site
+          git config user.email "action@github.com"
+          git config user.name "GitHub Actions"
+          git add -A
+          git diff --cached --quiet || git commit -m "Deploy tensor"
+          git push