chore: migrate CI/CD from GitLab to Gitea Actions

Replace .gitlab-ci.yml with .gitea/workflows/deploy.yml for build and
deploy pipeline. Deploy target updated to 10.0.0.247.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -0,0 +1,34 @@
+name: Build and Deploy
+on:
+  push:
+    branches: [master]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build Docker image
+        run: docker build -t silverlabs-website:latest -t silverlabs-website:${{ github.sha }} .
+      - name: Deploy to server
+        run: |
+          # Install SSH tools
+          apt-get update && apt-get install -y sshpass
+          # Save and transfer image
+          docker save silverlabs-website:latest | gzip > /tmp/silverlabs-website.tar.gz
+          sshpass -p "${{ secrets.DEPLOY_PASSWORD }}" scp -o StrictHostKeyChecking=no /tmp/silverlabs-website.tar.gz sysadmin@10.0.0.247:/tmp/
+          # SSH and deploy
+          sshpass -p "${{ secrets.DEPLOY_PASSWORD }}" ssh -o StrictHostKeyChecking=no sysadmin@10.0.0.247 bash -s << 'EOF'
+          set -e
+          docker load < /tmp/silverlabs-website.tar.gz
+          docker stop silverlabs-website 2>/dev/null || true
+          docker rm silverlabs-website 2>/dev/null || true
+          docker run -d \
+            --name silverlabs-website \
+            --restart unless-stopped \
+            -p 8100:80 \
+            silverlabs-website:latest
+          docker ps | grep silverlabs-website
+          rm /tmp/silverlabs-website.tar.gz
+          echo "Deployment complete!"
+          EOF