ci: add GitHub Actions workflow to sync to Gitea

.github/workflows/sync-to-gitea.yml

@@ -0,0 +1,29 @@
+name: sync-to-gitea
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Push to Gitea
+        env:
+          GITEA_USERNAME: ${{ secrets.GITEA_USERNAME }}
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        run: |
+          echo "Syncing to Gitea: https://ci.nxtgauge.com/Admin/${{ github.event.repository.name }}"
+          echo "GitHub commit: $(git rev-parse HEAD)"
+          echo "Target branch: high-performance"
+
+          git remote add gitea "https://${GITEA_USERNAME}:${GITEA_TOKEN}@ci.nxtgauge.com/Admin/${{ github.event.repository.name }}.git"
+          git push gitea main:high-performance --force-with-lease
+
+          echo "Sync complete!"