Add CI/CD workflow for automatic builds

Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -0,0 +1,26 @@
+name: Build and Push Frontend
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Build Docker image
+        run: docker build -t git.fuq.tv/admin/aiworker-frontend:${{ gitea.sha }} .
+
+      - name: Tag as latest
+        run: docker tag git.fuq.tv/admin/aiworker-frontend:${{ gitea.sha }} git.fuq.tv/admin/aiworker-frontend:latest
+
+      - name: Login to Gitea registry
+        run: echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login git.fuq.tv -u admin --password-stdin
+
+      - name: Push images
+        run: |
+          docker push git.fuq.tv/admin/aiworker-frontend:${{ gitea.sha }}
+          docker push git.fuq.tv/admin/aiworker-frontend:latest