chore: 补充生产部署配置

- requirements.txt 添加 requests 依赖
- 新增 docker-compose.prod.yml 生产编排文件
- 新增 frontend/Dockerfile.prod 前端生产镜像
- 新增 frontend/nginx.conf 反向代理配置

frontend/Dockerfile.prod

@@ -0,0 +1,21 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+RUN npm install -g npm@10
+
+COPY package.json .
+RUN npm install
+
+COPY . .
+RUN npm run build
+
+# Production stage
+FROM nginx:alpine
+
+COPY --from=builder /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]