feat(i18n): add multilingual support for documentation with Chinese and English content

docs/src/lib/i18n.ts

@@ -0,0 +1,15 @@
+import { defineI18n } from 'fumadocs-core/i18n';
+
+export type Locale = 'en' | 'zh-CN';
+
+export const i18n = defineI18n({
+  defaultLanguage: 'en',
+  languages: ['en', 'zh-CN'],
+  parser: 'dot',
+  hideLocale: 'default-locale',
+  fallbackLanguage: null,
+});
+
+export function localizePath(locale: string, path: string) {
+  return locale === i18n.defaultLanguage ? path : `/${locale}${path}`;
+}