feat(docs): enhance documentation site with internationalization and layout updates

- Updated the demo API to support locale-based content rendering.
- Refactored the main layout to accommodate language-specific metadata and routing.
- Introduced new components for blog and documentation pages, ensuring proper language handling.
- Added styles for improved UI consistency across different sections.
- Removed deprecated layout files and streamlined the structure for better maintainability.

apps/docs/lib/github.ts

@@ -0,0 +1,39 @@
+import { gitConfig } from './shared';
+
+export type RepoStats = {
+  stars: number | null;
+  version: string | null;
+};
+
+async function fetchJson(url: string): Promise<Record<string, unknown> | null> {
+  try {
+    const res = await fetch(url, {
+      headers: { Accept: 'application/vnd.github+json' },
+      next: { revalidate: 3600 },
+    });
+    if (!res.ok) return null;
+    return (await res.json()) as Record<string, unknown>;
+  } catch {
+    return null;
+  }
+}
+
+export async function getRepoStats(): Promise<RepoStats> {
+  const base = `https://api.github.com/repos/${gitConfig.user}/${gitConfig.repo}`;
+  const [repo, release] = await Promise.all([
+    fetchJson(base),
+    fetchJson(`${base}/releases/latest`),
+  ]);
+
+  return {
+    stars: typeof repo?.stargazers_count === 'number' ? repo.stargazers_count : null,
+    version: typeof release?.tag_name === 'string' ? release.tag_name : null,
+  };
+}
+
+export function formatStars(stars: number): string {
+  return new Intl.NumberFormat('en', {
+    notation: 'compact',
+    maximumFractionDigits: 1,
+  }).format(stars);
+}