UX: Reorder admin menu to highlight Design Approvals and Shipping rates

Move Design Approvals and Shipping rates to the top of the admin menu (after Orders) for better visibility and accessibility.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/components/AdminNav.tsx

@@ -6,6 +6,12 @@ export default function AdminNav() {
       <Link href="/admin/orders" className="tag-label hover:text-ink">
         Orders
       </Link>
+      <Link href="/admin/designs" className="tag-label hover:text-ink">
+        Design Approvals
+      </Link>
+      <Link href="/admin/shipping-rates" className="tag-label hover:text-ink">
+        Shipping rates
+      </Link>
       <Link href="/admin/products/new" className="tag-label hover:text-ink">
         Add product
       </Link>
@@ -27,9 +33,6 @@ export default function AdminNav() {
       <Link href="/admin/inbox" className="tag-label hover:text-ink">
         Inbox
       </Link>
-      <Link href="/admin/designs" className="tag-label hover:text-ink">
-        Design Approvals
-      </Link>
       <Link href="/admin/gallery/new" className="tag-label hover:text-ink">
         Add to gallery
       </Link>
@@ -39,9 +42,6 @@ export default function AdminNav() {
       <Link href="/admin/change-password" className="tag-label hover:text-ink">
         Change password
       </Link>
-      <Link href="/admin/shipping-rates" className="tag-label hover:text-ink">
-        Shipping rates
-      </Link>
     </div>
   );
 }