feat: 适配 Nginx /ai/ 路径前缀

docker/Dockerfile.frontend

@@ -12,4 +12,4 @@ ENV PYTHONPATH=/app
 
 EXPOSE 8501
 
-CMD ["streamlit", "run", "frontend/frontend.py", "--server.port", "8501", "--server.address", "0.0.0.0"]
+CMD ["streamlit", "run", "frontend/frontend.py", "--server.port", "8501", "--server.address", "0.0.0.0", "--server.baseUrlPath", "/ai"]

docker/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       dockerfile: docker/Dockerfile.frontend
     container_name: ai-frontend
     environment:
-      - API_URL=/api/chat   # 通过 Nginx 反向代理访问后端
+      - API_URL=/ai/api/chat   # 通过 Nginx 反向代理访问后端（路径前缀 /ai）
     ports:
       - "127.0.0.1:8501:8501"  # 仅本机访问，供 Nginx 反向代理使用
     networks: