refactor: enhance authentication and signup flow with new providers, update middleware matcher, and improve type safety for API responses

providers/query-provider.tsx

@@ -0,0 +1,12 @@
+"use client";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+
+const queryClient = new QueryClient();
+
+export default function QueryProvider({
+	children,
+}: { children: React.ReactNode }) {
+	return (
+		<QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+	);
+}