Update app/icon.tsx

app/icon.tsx

@@ -0,0 +1,30 @@
+import { ImageResponse } from 'next/og';
+
+export const size = {
+  width: 32,
+  height: 32,
+};
+export const contentType = 'image/png';
+
+export default function Icon() {
+  return new ImageResponse(
+    (
+      <div
+        style={{
+          fontSize: 24,
+          background: 'linear-gradient(90deg, #667eea 0%, #764ba2 100%)',
+          width: '100%',
+          height: '100%',
+          display: 'flex',
+          alignItems: 'center',
+          justifyContent: 'center',
+          color: 'white',
+          borderRadius: '50%',
+        }}
+      >
+        👔
+      </div>
+    ),
+    { ...size }
+  );
+}