feat(#29): Add example product tool requiring purchase to access

src/routes/checkout/+page.server.ts

@@ -0,0 +1,11 @@
+/** @type {import('./$types').PageLoad} */
+import { redirect } from '@sveltejs/kit';
+
+export const load = async ({ params, locals: { safeGetSession } }) => {
+	const { session } = await safeGetSession();
+	if (!session) {
+		throw redirect(303, '/login'); // Redirect unauthenticated users to login
+	}
+
+	return params;
+};