feat: rebuild CSP practice workflow, UX and automation

frontend/README.md

@@ -1,36 +1,43 @@
-This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
+# Frontend (Next.js)
 
-## Getting Started
-
-First, run the development server:
+## 开发
 
 ```bash
+npm ci
 npm run dev
-# or
-yarn dev
-# or
-pnpm dev
-# or
-bun dev
 ```
 
-Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+默认访问：`http://localhost:3000`
 
-You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+## 构建
 
-This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
+```bash
+npm run lint
+npm run build
+npm run start
+```
 
-## Learn More
+## 环境变量
 
-To learn more about Next.js, take a look at the following resources:
+- `NEXT_PUBLIC_API_BASE`：浏览器访问后端 API 的基地址。
+  - 开发默认：`http://localhost:8080`
+  - Docker/生产推荐：`/admin139`
+- `BACKEND_INTERNAL_URL`：Next.js 反向代理后端目标（服务端）
+  - Docker 默认：`http://backend:8080`
 
-- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
-- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+## 页面
 
-You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
-
-## Deploy on Vercel
-
-The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
-
-Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.
+- `/auth` 登录/注册
+- `/problems` 题库列表
+- `/problems/:id` 题目详情与提交
+- `/submissions` 提交列表
+- `/submissions/:id` 提交详情
+- `/wrong-book` 错题本
+- `/contests` 模拟竞赛列表
+- `/contests/:id` 比赛详情/报名/排行榜
+- `/kb` 知识库列表
+- `/kb/:slug` 文章详情
+- `/imports` 题库导入任务状态与结果
+- `/run` 在线 C++ 运行
+- `/me` 当前用户信息
+- `/leaderboard` 全站排行