chore: set index to each page

app/search/layout.tsx

@@ -3,6 +3,11 @@ import { Metadata } from "next";
 // TODO: use query param
 export const metadata: Metadata = {
   title: "Search results",
+  robots: {
+    googleBot: {
+      index: false,
+    },
+  },
 };
 
 export default function Layout({ children }: { children: React.ReactNode }) {