feat: Updated brand to be vantage

web/app/layout.tsx

@@ -5,7 +5,7 @@ import { AuthProvider } from "@/components/AuthProvider";
 import { Sidebar } from "@/components/Sidebar";
 
 export const metadata: Metadata = {
-  title: "KeyManager",
+  title: "Vantage",
   description: "Self-hosted SSH key management",
 };