docs: update readme

Author: antfu

README.md

@@ -1,16 +1,32 @@
+![Vite DevTools](https://github.com/user-attachments/assets/ac930792-ba80-4eb3-9121-66fcd59dc2a8)
+
 # Vite DevTools
 
+Vite DevTools is a set of tools for visualizing the internal state and build analysis for Vite and Rolldown (currently only work with [`rolldown-vite`](https://github.com/vitejs/rolldown-vite)).
+
 > [!IMPORTANT]
-> This project is still in development. Not yet usable.
+> This project is still in development. Not yet usable. You may preview it by building this project from source.
+
+## 🏗️ Project Progress
+
+State: **🚧 Work in progress**
 
-### Development Guide
+We are currently focusing on get the basic data visualization working for **Vite-Rolldown's build mode**. Dev mode will be delayed for later until Vite get the full-bundler dev mode.
+
+You can check the [TODO list](https://github.com/vitejs/devtools/issues/9) if you are interested in helping out.
+
+## 🧑‍💻 Development Guide
 
 Currently Vite DevTools only supports build time inspection, to develop this project, you first need to build itself to get the Rolldown meta for testing.
 
-Run `pnpm build` first and then run `pnpm dev` to start the dev server.
+- `pnpm install` to install dependencies
+- `pnpm build` first to get the Rolldown logs under `./packages/devtools/.rolldown` folder
+- `pnpm dev` to start the dev server
+
+As the data interface between Rolldown is not yet stable, and breaking changes are expected. We locked the Rolldown version in our `pnpm-workspace.yaml`, which means the published version may not work with the latest Rolldown.
 
-As the data interface between Rolldown is not yet stable, when you pull the latest code, it's recommended remove the `./packages/devtools/.rolldown` folder and run `pnpm build` again to get the latest log.
+When pulling the latest commits, it's recommended to remove the `./packages/devtools/.rolldown` folder and run `pnpm build` again to get the latest data format.
 
-## Licenses
+## 📄 Licenses
 
 This project is licensed under the [MIT License](LICENSE).