feat: remove 'Audit Log' from AppSidebar and HubPage navigation

Author: ChingEnLin

frontend/components/AppSidebar.tsx

@@ -52,15 +52,6 @@ const NAV_ITEMS: NavItem[] = [
       </svg>
     ),
   },
-  {
-    label: 'Audit Log',
-    href: '/audit',
-    icon: (
-      <svg width="14" height="14" viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.4">
-        <path d="M3 2h7l3 3v9H3zM6 7h5M6 9h5M6 11h3"/>
-      </svg>
-    ),
-  },
 ];
 
 const itemBase: React.CSSProperties = {

frontend/pages/HubPage.tsx

@@ -210,7 +210,6 @@ const HubPage: React.FC = () => {
           {[
             { label: 'Home', href: '/hub', active: true },
             { label: 'Analytics', href: '/analytics', active: false },
-            { label: 'Audit Log', href: '/audit', active: false },
           ].map((item) => (
             <Link
               key={item.href}