chore: establish learning module baseline

OpenMAIC/packages/docs/app/(intl)/[lang]/[...slug]/layout.tsx

@@ -0,0 +1,17 @@
+import { source } from '@/lib/source';
+import { DocsLayout } from 'fumadocs-ui/layouts/docs';
+import { baseOptions } from '@/lib/layout.shared';
+import type { ReactNode } from 'react';
+
+// DocsLayout (sidebar + nav) for prefixed-locale docs pages.
+export default async function Layout({
+  children,
+  params,
+}: LayoutProps<'/[lang]/[...slug]'>) {
+  const { lang } = await params;
+  return (
+    <DocsLayout tree={source.getPageTree(lang)} {...baseOptions(lang)}>
+      {children}
+    </DocsLayout>
+  );
+}

OpenMAIC/packages/docs/app/(intl)/[lang]/[...slug]/page.tsx

@@ -0,0 +1,33 @@
+import { source } from '@/lib/source';
+import { notFound } from 'next/navigation';
+import type { Metadata } from 'next';
+import { RenderDocsPage } from '@/components/docs-page';
+import { i18n } from '@/lib/i18n';
+
+// Prefixed-locale docs page at /docs/<lang>/<slug> (requires >=1 slug segment,
+// so it never collides with the default-locale single-segment /[slug] route).
+export default async function Page(props: PageProps<'/[lang]/[...slug]'>) {
+  const { lang, slug } = await props.params;
+  return <RenderDocsPage slug={slug} lang={lang} />;
+}
+
+export function generateStaticParams() {
+  // Every NON-default locale × every slug.
+  const langs = i18n.languages.filter((l) => l !== i18n.defaultLanguage);
+  const params: { lang: string; slug: string[] }[] = [];
+  for (const lang of langs) {
+    for (const page of source.getPages(lang)) {
+      params.push({ lang, slug: page.slugs });
+    }
+  }
+  return params;
+}
+
+export async function generateMetadata(
+  props: PageProps<'/[lang]/[...slug]'>,
+): Promise<Metadata> {
+  const { lang, slug } = await props.params;
+  const page = source.getPage(slug, lang);
+  if (!page) notFound();
+  return { title: page.data.title, description: page.data.description };
+}