feat: complete huihui square avatar workflows

digital-avatar-app/docker-compose.yml

@@ -0,0 +1,31 @@
+# 会会数字分身 —— Docker 测试实例（独立端口，不干扰现有 :8088 huihui 部署）
+services:
+  avatar-backend:
+    build: ./backend
+    image: avatar-test-backend:latest
+    container_name: avatar-test-backend
+    restart: unless-stopped
+    env_file:
+      - .env
+    expose:
+      - "8000"
+    ports:
+      - "8011:8000"   # 仅用于直接调试 API；前端经内部网络访问，不走 host 端口
+    networks:
+      - avatar-net
+
+  avatar-frontend:
+    build: .
+    image: avatar-test-frontend:latest
+    container_name: avatar-test-frontend
+    restart: unless-stopped
+    ports:
+      - "8099:80"     # 浏览器访问 http://<host>:8099
+    depends_on:
+      - avatar-backend
+    networks:
+      - avatar-net
+
+networks:
+  avatar-net:
+    driver: bridge