💄 style(layout): adjust scroll area styling

- add overflow-y-auto to ScrollArea component to ensure proper vertical scrolling behavior in main layout

src/client/admin-shadcn/layouts/MainLayout.tsx

@@ -95,7 +95,7 @@ export const MainLayout = () => {
         )}
       </div>
       
-      <ScrollArea className="flex-1">
+      <ScrollArea className="flex-1 overflow-y-auto">
         <nav className="p-2">
           {menuItems.map((item) => (
             <div key={item.key}>