Add Open Graph and Twitter Card metadata

Generated with Claude Code

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

app/layout.tsx

@@ -15,6 +15,30 @@ export const metadata: Metadata = {
   icons: {
     icon: "data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🗳️</text></svg>",
   },
+  openGraph: {
+    title: "Conviction Voting - Continuous Decision Making for DAOs",
+    description:
+      "Learn about Conviction Voting, a novel continuous decision-making mechanism where votes accumulate weight over time using a halflife algorithm.",
+    url: "https://convictionvoting.com",
+    siteName: "Conviction Voting",
+    images: [
+      {
+        url: "/og-image.jpg",
+        width: 1200,
+        height: 630,
+        alt: "Conviction Voting - Continuous Decision Making for DAOs",
+      },
+    ],
+    locale: "en_US",
+    type: "website",
+  },
+  twitter: {
+    card: "summary_large_image",
+    title: "Conviction Voting - Continuous Decision Making for DAOs",
+    description:
+      "Learn about Conviction Voting, a novel continuous decision-making mechanism where votes accumulate weight over time using a halflife algorithm.",
+    images: ["/og-image.jpg"],
+  },
 }
 
 export default function RootLayout({