docs: add chinese readme and docs website (#76)

## Summary by Sourcery

Add a new documentation site package and a Chinese README to improve
project documentation and accessibility.

New Features:
- Introduce a dedicated @dropout/docs React Router application powered
by Fumadocs for hosting the project documentation.

Documentation:
- Add a Chinese README file providing an overview, installation, build
instructions, and contribution guidelines for Chinese-speaking users.
- Set up initial docs content, navigation, and metadata within the new
docs site, including example pages and search endpoint configuration.

8 files changed, 192 insertions, 0 deletions

diff --git a/packages/docs/app/app.css b/packages/docs/app/app.css
new file mode 100644
index 0000000..50b3bc2
--- /dev/null
+++ b/packages/docs/app/app.css
@@ -0,0 +1,3 @@
+@import 'tailwindcss';
+@import 'fumadocs-ui/css/neutral.css';
+@import 'fumadocs-ui/css/preset.css';
diff --git a/packages/docs/app/docs/page.tsx b/packages/docs/app/docs/page.tsx
new file mode 100644
index 0000000..2618989
--- /dev/null
+++ b/packages/docs/app/docs/page.tsx
@@ -0,0 +1,51 @@
+import type { Route } from './+types/page';
+import { DocsLayout } from 'fumadocs-ui/layouts/docs';
+import { DocsBody, DocsDescription, DocsPage, DocsTitle } from 'fumadocs-ui/layouts/docs/page';
+import { source } from '@/lib/source';
+import defaultMdxComponents from 'fumadocs-ui/mdx';
+import browserCollections from 'fumadocs-mdx:collections/browser';
+import { baseOptions } from '@/lib/layout.shared';
+import { useFumadocsLoader } from 'fumadocs-core/source/client';
+
+export async function loader({ params }: Route.LoaderArgs) {
+  const slugs = params['*'].split('/').filter((v) => v.length > 0);
+  const page = source.getPage(slugs);
+  if (!page) throw new Response('Not found', { status: 404 });
+
+  return {
+    path: page.path,
+    pageTree: await source.serializePageTree(source.getPageTree()),
+  };
+}
+
+const clientLoader = browserCollections.docs.createClientLoader({
+  component(
+    { toc, frontmatter, default: Mdx },
+    // you can define props for the `<Content />` component
+    props?: {
+      className?: string;
+    },
+  ) {
+    return (
+      <DocsPage toc={toc} {...props}>
+        <title>{frontmatter.title}</title>
+        <meta name="description" content={frontmatter.description} />
+        <DocsTitle>{frontmatter.title}</DocsTitle>
+        <DocsDescription>{frontmatter.description}</DocsDescription>
+        <DocsBody>
+          <Mdx components={{ ...defaultMdxComponents }} />
+        </DocsBody>
+      </DocsPage>
+    );
+  },
+});
+
+export default function Page({ loaderData }: Route.ComponentProps) {
+  const { path, pageTree } = useFumadocsLoader(loaderData);
+
+  return (
+    <DocsLayout {...baseOptions()} tree={pageTree}>
+      {clientLoader.useContent(path)}
+    </DocsLayout>
+  );
+}
diff --git a/packages/docs/app/docs/search.ts b/packages/docs/app/docs/search.ts
new file mode 100644
index 0000000..9603c72
--- /dev/null
+++ b/packages/docs/app/docs/search.ts
@@ -0,0 +1,12 @@
+import type { Route } from './+types/search';
+import { createFromSource } from 'fumadocs-core/search/server';
+import { source } from '@/lib/source';
+
+const server = createFromSource(source, {
+  // https://docs.orama.com/docs/orama-js/supported-languages
+  language: 'english',
+});
+
+export async function loader({ request }: Route.LoaderArgs) {
+  return server.GET(request);
+}
diff --git a/packages/docs/app/lib/layout.shared.tsx b/packages/docs/app/lib/layout.shared.tsx
new file mode 100644
index 0000000..af2b6f0
--- /dev/null
+++ b/packages/docs/app/lib/layout.shared.tsx
@@ -0,0 +1,9 @@
+import type { BaseLayoutProps } from 'fumadocs-ui/layouts/shared';
+
+export function baseOptions(): BaseLayoutProps {
+  return {
+    nav: {
+      title: 'React Router',
+    },
+  };
+}
diff --git a/packages/docs/app/lib/source.ts b/packages/docs/app/lib/source.ts
new file mode 100644
index 0000000..97cf767
--- /dev/null
+++ b/packages/docs/app/lib/source.ts
@@ -0,0 +1,7 @@
+import { loader } from 'fumadocs-core/source';
+import { docs } from 'fumadocs-mdx:collections/server';
+
+export const source = loader({
+  source: docs.toFumadocsSource(),
+  baseUrl: '/docs',
+});
diff --git a/packages/docs/app/root.tsx b/packages/docs/app/root.tsx
new file mode 100644
index 0000000..08b8aa8
--- /dev/null
+++ b/packages/docs/app/root.tsx
@@ -0,0 +1,73 @@
+import {
+  isRouteErrorResponse,
+  Links,
+  Meta,
+  Outlet,
+  Scripts,
+  ScrollRestoration,
+} from 'react-router';
+import { RootProvider } from 'fumadocs-ui/provider/react-router';
+import type { Route } from './+types/root';
+import './app.css';
+
+export const links: Route.LinksFunction = () => [
+  { rel: 'preconnect', href: 'https://fonts.googleapis.com' },
+  {
+    rel: 'preconnect',
+    href: 'https://fonts.gstatic.com',
+    crossOrigin: 'anonymous',
+  },
+  {
+    rel: 'stylesheet',
+    href: 'https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap',
+  },
+];
+
+export function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <html lang="en" suppressHydrationWarning>
+      <head>
+        <meta charSet="utf-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <Meta />
+        <Links />
+      </head>
+      <body className="flex flex-col min-h-screen">
+        <RootProvider>{children}</RootProvider>
+        <ScrollRestoration />
+        <Scripts />
+      </body>
+    </html>
+  );
+}
+
+export default function App() {
+  return <Outlet />;
+}
+
+export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
+  let message = 'Oops!';
+  let details = 'An unexpected error occurred.';
+  let stack: string | undefined;
+
+  if (isRouteErrorResponse(error)) {
+    message = error.status === 404 ? '404' : 'Error';
+    details =
+      error.status === 404 ? 'The requested page could not be found.' : error.statusText || details;
+  } else if (import.meta.env.DEV && error && error instanceof Error) {
+    details = error.message;
+    stack = error.stack;
+  }
+
+  return (
+    <main className="pt-16 p-4 w-full max-w-[1400px] mx-auto">
+      <h1>{message}</h1>
+      <p>{details}</p>
+      {stack && (
+        <pre className="w-full p-4 overflow-x-auto">
+          <code>{stack}</code>
+        </pre>
+      )}
+    </main>
+  );
+}
diff --git a/packages/docs/app/routes.ts b/packages/docs/app/routes.ts
new file mode 100644
index 0000000..60dd630
--- /dev/null
+++ b/packages/docs/app/routes.ts
@@ -0,0 +1,7 @@
+import { index, route, type RouteConfig } from '@react-router/dev/routes';
+
+export default [
+  index('routes/home.tsx'),
+  route('docs/*', 'docs/page.tsx'),
+  route('api/search', 'docs/search.ts'),
+] satisfies RouteConfig;
diff --git a/packages/docs/app/routes/home.tsx b/packages/docs/app/routes/home.tsx
new file mode 100644
index 0000000..7f03ba9
--- /dev/null
+++ b/packages/docs/app/routes/home.tsx
@@ -0,0 +1,30 @@
+import type { Route } from './+types/home';
+import { HomeLayout } from 'fumadocs-ui/layouts/home';
+import { Link } from 'react-router';
+import { baseOptions } from '@/lib/layout.shared';
+
+export function meta({}: Route.MetaArgs) {
+  return [
+    { title: 'New React Router App' },
+    { name: 'description', content: 'Welcome to React Router!' },
+  ];
+}
+
+export default function Home() {
+  return (
+    <HomeLayout {...baseOptions()}>
+      <div className="p-4 flex flex-col items-center justify-center text-center flex-1">
+        <h1 className="text-xl font-bold mb-2">Fumadocs on React Router.</h1>
+        <p className="text-fd-muted-foreground mb-4">
+          The truly flexible docs framework on React.js.
+        </p>
+        <Link
+          className="text-sm bg-fd-primary text-fd-primary-foreground rounded-full font-medium px-4 py-2.5"
+          to="/docs"
+        >
+          Open Docs
+        </Link>
+      </div>
+    </HomeLayout>
+  );
+}