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/app/manifest.ts

@@ -0,0 +1,21 @@
+import { MetadataRoute } from "next";
+
+export default function manifest(): MetadataRoute.Manifest {
+  return {
+    name: "Meezi — میزی",
+    short_name: "Meezi",
+    description: "پلتفرم هوشمند مدیریت کافه و رستوران",
+    start_url: "/fa",
+    display: "standalone",
+    background_color: "#ffffff",
+    theme_color: "#16a34a",
+    orientation: "portrait",
+    icons: [
+      { src: "/icon-192.png", sizes: "192x192", type: "image/png", purpose: "maskable" },
+      { src: "/icon-512.png", sizes: "512x512", type: "image/png", purpose: "any" },
+    ],
+    categories: ["business", "productivity"],
+    lang: "fa",
+    dir: "rtl",
+  };
+}