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;"]

frontend/nginx.conf

@@ -0,0 +1,41 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Gzip compression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+
+    # Frontend static files
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # API proxy to backend
+    location /api/ {
+        proxy_pass http://backend:8000/api/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_connect_timeout 30s;
+        proxy_send_timeout 30s;
+        proxy_read_timeout 30s;
+    }
+
+    # Health check endpoint
+    location /health {
+        proxy_pass http://backend:8000/health;
+    }
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 30d;
+        add_header Cache-Control "public, immutable";
+    }
+}