fix: Enabled vertical scrolling in sidebar navigation

frontend/components/Sidebar.tsx

@@ -54,7 +54,7 @@ export default function Sidebar({ tabs, activeTab, onTabSelect, status, lang }:
         {isExpanded && <h1 className="text-xl font-bold tracking-tight text-white whitespace-nowrap animate-in fade-in duration-500">AndesOps</h1>}
       </div>
 
-      <nav className="flex-1 flex flex-col gap-2 overflow-hidden">
+      <nav className="flex-1 flex flex-col gap-2 overflow-y-auto custom-scrollbar pr-1">
         {tabs.map((tab) => {
           const isActive = activeTab === tab;
           const { label, icon } = getTabLabel(tab);