Reorganize admin configuration sections

frontend/app/ui/AdminSidebar.tsx

@@ -4,18 +4,17 @@ import { usePathname } from 'next/navigation'
 
 const NAV_GROUPS = [
   {
-    title: 'Operations',
+    title: 'Configuration',
     items: [
-      { href: '/admin', label: 'Overview' },
-      { href: '/admin/diagnostics', label: 'System health' },
-      { href: '/new-requests', label: 'New requests' },
-      { href: '/admin/issues', label: 'Issue tracking' },
+      { href: '/admin', label: 'Config overview' },
+      { href: '/admin/general', label: 'Application & proxy' },
+      { href: '/admin/site', label: 'Site & login' },
+      { href: '/admin/notifications', label: 'Notifications' },
     ],
   },
   {
-    title: 'Services',
+    title: 'Media Services',
     items: [
-      { href: '/admin/general', label: 'General' },
       { href: '/admin/seerr', label: 'Seerr' },
       { href: '/admin/jellyfin', label: 'Jellyfin' },
       { href: '/admin/sonarr', label: 'Sonarr' },
@@ -25,24 +24,28 @@ const NAV_GROUPS = [
     ],
   },
   {
-    title: 'Requests',
+    title: 'Request Pipeline',
     items: [
-      { href: '/admin/requests', label: 'Request sync' },
-      { href: '/admin/requests-all', label: 'All requests' },
-      { href: '/admin/cache', label: 'Cache Control' },
+      { href: '/admin/requests', label: 'Sync & retention' },
+      { href: '/admin/cache', label: 'Request cache' },
       { href: '/admin/artwork', label: 'Artwork cache' },
+      { href: '/admin/requests-all', label: 'All requests' },
     ],
   },
   {
-    title: 'Admin',
+    title: 'Users & Access',
     items: [
-      { href: '/admin/notifications', label: 'Notifications' },
-      { href: '/admin/system', label: 'How it works' },
-      { href: '/admin/site', label: 'Site' },
       { href: '/users', label: 'Users' },
       { href: '/admin/invites', label: 'Invite management' },
+    ],
+  },
+  {
+    title: 'System',
+    items: [
+      { href: '/admin/diagnostics', label: 'System health' },
       { href: '/admin/logs', label: 'Activity log' },
       { href: '/admin/maintenance', label: 'Maintenance' },
+      { href: '/admin/system', label: 'How it works' },
     ],
   },
 ]
@@ -59,7 +62,9 @@ export default function AdminSidebar() {
             {group.items.map((item) => {
               const isActive =
                 pathname === item.href ||
-                (item.href !== '/' && pathname.startsWith(item.href))
+                (item.href !== '/' &&
+                  item.href !== '/admin' &&
+                  pathname.startsWith(`${item.href}/`))
               return (
                 <a key={item.href} href={item.href} className={isActive ? 'is-active' : ''}>
                   {item.label}