docs: add document for nextjs integration

Author: moonrailgun

website/docs/framework/_category_.json

@@ -0,0 +1,8 @@
+{
+  "label": "Framework",
+  "position": 5,
+  "link": {
+    "type": "generated-index",
+    "description": "Framework"
+  }
+}

website/docs/framework/nextjs.md

@@ -0,0 +1,32 @@
+---
+sidebar_position: 1
+title: Nextjs
+---
+
+## Use in Nextjs
+
+### transpile source code
+
+As nextjs will not auto transpile modules in `node_module`. so you should manual assign it should be process in build stage.
+
+- [Reference](https://nextjs.org/docs/architecture/nextjs-compiler#module-transpilation)
+
+
+
+### Only render in client side
+
+as tushan is a pure client library and not ready for SSR, so just keep everything is in client render will avoid much problem
+
+```ts
+'use client'
+```
+
+- [Reference](https://nextjs.org/docs/app/api-reference/directives/use-client)
+
+### Support not cool in nextjs 15
+
+As nextjs 15 is design for react 19, so its will have some issue between react 18 and 19.
+
+Unfortunately, the component library arco design used by tushan does not fully support react 19.
+
+So at least you need use your own `Message`/`Notification` component rather than `tushan`'s those component.