admin: Superforms + Zod validation, three-address-defaults schema, profiles toast fix

- Add Superforms + Zod 4 for all admin form validation
- Replace address isDefault with three separate boolean defaults (Mailing, Billing, Shipping)
- Update profiles page with three-checkbox address form and toast improvements
- Convert all admin page server actions to pass request directly to crud
- Export superFormErrorsToFieldErrors helper for profiles server actions
- Regenerate Prisma client for new schema fields

src/routes/+error.svelte

@@ -6,8 +6,11 @@
 <Window>
 	{#if $page.status === 403}
 		<h1 class="dark:text-gray-100">Not Authorized</h1>
-      <p class="dark:text-gray-300">
-        You don't have permission to view this page. <a href="/" class="dark:text-gray-400 dark:hover:text-gray-200">Go home</a>.
-      </p>
+		<p class="dark:text-gray-300">
+			You don't have permission to view this page. <a
+				href="/"
+				class="dark:text-gray-400 dark:hover:text-gray-200">Go home</a
+			>.
+		</p>
 	{/if}
 </Window>