Global search overlay (Cmd+K), copy button on messages, fix Turbopack ESM

app/layout.tsx

@@ -3,6 +3,7 @@ import "./globals.css";
 import { BottomNav } from "@/components/BottomNav";
 import { Providers } from "@/components/Providers";
 import { ErrorBoundary } from "@/components/ErrorBoundary";
+import { SearchOverlay } from "@/components/SearchOverlay";
 
 export const metadata: Metadata = {
   title: "Hermes OS",
@@ -31,6 +32,7 @@ export default function RootLayout({ children }: { children: React.ReactNode })
             <ErrorBoundary>{children}</ErrorBoundary>
           </main>
           <BottomNav />
+          <SearchOverlay />
         </Providers>
         <script
           dangerouslySetInnerHTML={{