feat: implement landing page structure with legal pages, footer, CTA, and domain redirection proxy

greenlns-landing/app/page.tsx

@@ -1,3 +1,4 @@
+import type { Metadata } from 'next'
 import Navbar from '@/components/Navbar'
 import Hero from '@/components/Hero'
 import Ticker from '@/components/Ticker'
@@ -9,6 +10,12 @@ import FAQ from '@/components/FAQ'
 import CTA from '@/components/CTA'
 import Footer from '@/components/Footer'
 
+export const metadata: Metadata = {
+  alternates: {
+    canonical: '/',
+  },
+}
+
 const howToSchema = {
   '@context': 'https://schema.org',
   '@type': 'HowTo',