chore: commit in-progress metadata and asset updates

app/layout.tsx

@@ -31,9 +31,20 @@ const plexMono = IBM_Plex_Mono({
   variable: '--font-plex-mono',
 })
 
+const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://localhost:3000'
+
 export const metadata: Metadata = {
+  metadataBase: new URL(siteUrl),
   title: { template: '%s | Krishna', default: 'Krishna' },
   description: 'A sleek static journal with code and math.',
+  icons: {
+    icon: '/ouroboros.svg',
+  },
+  openGraph: {
+    title: 'Krishna',
+    description: 'A sleek static journal with code and math.',
+    images: ['/og.png'],
+  },
 }
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {