Add ISAC user operations and access roles

src/lib/components/AppShell.svelte

@@ -3,8 +3,9 @@
 	import PendingForm from '$lib/components/PendingForm.svelte';
 	import type { Snippet } from 'svelte';
 
-	let { user, children }: {
+	let { user, isacAccess, children }: {
 		user: { username: string; role: string } | null;
+		isacAccess: boolean;
 		children: Snippet;
 	} = $props();
 
@@ -26,8 +27,8 @@
 		{#if user}
 			<a class:active={page.url.pathname.startsWith('/account')} href="/account">My Profile</a>
 		{/if}
-		{#if user?.role === 'admin'}
-			<a class:active={page.url.pathname.startsWith('/admin')} href="/admin/stats">Admin</a>
+		{#if isacAccess}
+			<a class:active={page.url.pathname.startsWith('/admin')} href="/admin">ISAC</a>
 		{/if}
 	</nav>
 	{#if user}