feat: ship blog platform admin and deploy stack

frontend/README.md

@@ -1,43 +1,60 @@
-# Astro Starter Kit: Minimal
+# frontend
 
-```sh
-npm create astro@latest -- --template minimal
+Astro 前台站点，当前运行模式为：
+
+- `output: 'server'`
+- `@astrojs/node` standalone
+- 少量 Svelte 组件用于客户端激活
+
+## 常用命令
+
+```powershell
+pnpm install
+pnpm dev
+pnpm build
 ```
 
-> 🧑‍🚀 **Seasoned astronaut?** Delete this file. Have fun!
+默认本地开发端口：
 
-## 🚀 Project Structure
+- frontend: `4321`
 
-Inside of your Astro project, you'll see the following folders and files:
+## API 地址约定
 
-```text
-/
-├── public/
-├── src/
-│   └── pages/
-│       └── index.astro
-└── package.json
+前台现在区分两类 API 地址：
+
+- `INTERNAL_API_BASE_URL`
+  - 给 Astro SSR / Node 服务端渲染访问 backend 用
+  - docker compose 默认推荐：`http://backend:5150/api`
+- `PUBLIC_API_BASE_URL`
+  - 给浏览器里的评论、AI 问答、搜索等请求用
+  - 如果不设置，生产环境会回退到“当前访问主机 + `:5150/api`”
+
+如果你走正式域名 / HTTPS / 反向代理，建议显式设置：
+
+```env
+PUBLIC_API_BASE_URL=https://api.blog.init.cool
 ```
 
-Astro looks for `.astro` or `.md` files in the `src/pages/` directory. Each page is exposed as a route based on its file name.
+## 图片处理链
 
-There's nothing special about `src/components/`, but that's where we like to put any Astro/React/Vue/Svelte/Preact components.
+前台现在额外带了一个 SSR 图片优化端点：
 
-Any static assets, like images, can be placed in the `public/` directory.
+- `/_img`
 
-## 🧞 Commands
+它会对**同域图片**做：
 
-All commands are run from the root of the project, from a terminal:
+- 响应式尺寸裁切/缩放
+- `AVIF / WebP / JPEG|PNG` 输出
+- 前台卡片 / 文章页封面的 `srcset` 生成
 
-| Command                   | Action                                           |
-| :------------------------ | :----------------------------------------------- |
-| `npm install`             | Installs dependencies                            |
-| `npm run dev`             | Starts local dev server at `localhost:4321`      |
-| `npm run build`           | Build your production site to `./dist/`          |
-| `npm run preview`         | Preview your build locally, before deploying     |
-| `npm run astro ...`       | Run CLI commands like `astro add`, `astro check` |
-| `npm run astro -- --help` | Get help using the Astro CLI                     |
+如果你的封面图来自额外 CDN / R2 公网域名，需要给 frontend 运行时增加：
 
-## 👀 Want to learn more?
+```env
+PUBLIC_IMAGE_ALLOWED_HOSTS=cdn.example.com,pub-xxxx.r2.dev
+```
 
-Feel free to check [our documentation](https://docs.astro.build) or jump into our [Discord server](https://astro.build/chat).
+admin 侧上传封面时也会额外做：
+
+- 上传前压缩
+- 16:9 封面规范化
+- 优先转为 `AVIF / WebP`