feat(website): Next.js 16 marketing website with RTL/Farsi

Marketing website for Meezi platform:
- Server-side rendered pages: home, demo, blog, pricing
- RTL/Farsi layout with Vazirmatn font
- SEO metadata and Open Graph tags
- proxy.ts for Next.js 16 middleware convention
- MEEZI_API_URL internal Docker network routing

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

web/website/src/components/locale-html.tsx

@@ -0,0 +1,11 @@
+"use client";
+
+import { useEffect } from "react";
+
+export function LocaleHtml({ locale, dir }: { locale: string; dir: "rtl" | "ltr" }) {
+  useEffect(() => {
+    document.documentElement.lang = locale;
+    document.documentElement.dir = dir;
+  }, [locale, dir]);
+  return null;
+}