chore: sync with main [skip ci] (#91)

Co-authored-by: NtskwK <natsukawa247@outlook.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

3 files changed, 44 insertions, 0 deletions

diff --git a/packages/docs/app/lib/i18n.ts b/packages/docs/app/lib/i18n.ts
new file mode 100644
index 0000000..a9f18b1
--- /dev/null
+++ b/packages/docs/app/lib/i18n.ts
@@ -0,0 +1,8 @@
+import { defineI18n } from 'fumadocs-core/i18n';
+
+export const i18n = defineI18n({
+  defaultLanguage: 'zh',
+  languages: ['zh', 'en'],
+  hideLocale: 'default-locale',
+  parser: 'dir', // 使用目录结构 (content/zh/*, content/en/*)
+});
diff --git a/packages/docs/app/lib/layout.shared.tsx b/packages/docs/app/lib/layout.shared.tsx
new file mode 100644
index 0000000..6e90ba0
--- /dev/null
+++ b/packages/docs/app/lib/layout.shared.tsx
@@ -0,0 +1,24 @@
+import type { BaseLayoutProps } from 'fumadocs-ui/layouts/shared';
+import { i18n } from './i18n';
+
+export function baseOptions(locale: string): BaseLayoutProps {
+  // 默认语言（zh）不显示前缀，其他语言显示前缀
+  const isDefaultLocale = locale === i18n.defaultLanguage;
+  const localePrefix = isDefaultLocale ? '' : `/${locale}`;
+  
+  return {
+    i18n,
+    nav: {
+      title: 'DropOut',
+      url: localePrefix || '/',
+    },
+    githubUrl: 'https://github.com/HydroRoll-Team/DropOut',
+    links: [
+      {
+        type: 'main',
+        text: locale === 'zh' ? '文档' : 'Documentation',
+        url: `${localePrefix}/docs`,
+      },
+    ],
+  };
+}
diff --git a/packages/docs/app/lib/source.ts b/packages/docs/app/lib/source.ts
new file mode 100644
index 0000000..bce9bf9
--- /dev/null
+++ b/packages/docs/app/lib/source.ts
@@ -0,0 +1,12 @@
+import { loader } from 'fumadocs-core/source';
+import { docs } from 'fumadocs-mdx:collections/server';
+import { i18n } from './i18n';
+
+export const source = loader({
+  source: docs.toFumadocsSource(),
+  baseUrl: '/docs',
+  i18n,
+  // hideLocale: 'default-locale' 会自动生成正确的 URL:
+  // - 默认语言 (zh): /docs/getting-started
+  // - 其他语言 (en): /en/docs/getting-started
+});