Update logo, favicon, and hero image

index.html

@@ -10,7 +10,7 @@
     <meta property="og:title" content="herocast">
     <meta property="og:type" content="website">
     <meta property="og:description" content="herocast">
-    <meta property="og:image" content="/images/herocast_og.png">
+    <meta property="og:image" content="/images/nounspace_og.png">
     <meta property="og:image:type" content="image/jpeg">
     <meta property="og:image:width" content="1200">
     <meta property="og:image:height" content="737">

src/pages/_document.tsx

@@ -11,7 +11,7 @@ export default function Document() {
         <meta property="og:title" content="herocast" />
         <meta property="og:type" content="website" />
         <meta property="og:description" content="herocast is a client for Farcaster. it's focused on keyboard-first desktop experience for power users and teams" />
-        <meta property="og:image" content="/images/herocast_og.png" />
+        <meta property="og:image" content="/images/nounspace_og.png" />
         <meta property="og:image:type" content="image/jpeg" />
         <meta property="og:image:width" content="1200" />
         <meta property="og:image:height" content="737" />
@@ -28,4 +28,4 @@ export default function Document() {
       </body>
     </Html>
   )
-}
+}