feat: implement SEO-optimized landing pages, sitemap, and updated footer for enhanced site navigation and search visibility.

greenlns-landing/app/layout.tsx

@@ -34,15 +34,6 @@ export const metadata: Metadata = {
     title: 'GreenLens - Plant Identifier and Care Planner',
     description: 'Identify plants, get care guidance, and manage your collection with GreenLens.',
   },
-  alternates: {
-    canonical: '/',
-    languages: {
-      de: '/',
-      en: '/',
-      es: '/',
-      'x-default': '/',
-    },
-  },
 }
 
 export default async function RootLayout({ children }: { children: React.ReactNode }) {