feat: add 9 missing admin routes and nav groups restructure

frontend/src/App.tsx

@@ -46,6 +46,15 @@ import Tenant from '@/pages/admin/Tenant';
 import Billing from '@/pages/admin/Billing';
 import Analytics from '@/pages/admin/Analytics';
 import UserPortal from '@/pages/UserPortal';
+import AdminKnowledge from '@/pages/admin/Knowledge';
+import AdminWorkflow from '@/pages/admin/Workflow';
+import AdminStorage from '@/pages/admin/Storage';
+import AdminDeveloper from '@/pages/admin/Developer';
+import AdminDeveloperTools from '@/pages/admin/DeveloperTools';
+import AdminAutomation from '@/pages/admin/Automation';
+import AdminMcp from '@/pages/admin/Mcp';
+import AdminApps from '@/pages/admin/Apps';
+import AssetCenter from '@/pages/admin/AssetCenter';
 
 const App: React.FC = () => {
   const [user, setUser] = useState<User | null>(null);
@@ -134,6 +143,15 @@ const App: React.FC = () => {
           <Route path="tenant" element={<Tenant />} />
           <Route path="billing" element={<Billing />} />
           <Route path="analytics" element={<Analytics />} />
+          <Route path="knowledge" element={<AdminKnowledge />} />
+          <Route path="workflow" element={<AdminWorkflow />} />
+          <Route path="storage" element={<AdminStorage />} />
+          <Route path="developer" element={<AdminDeveloper />} />
+          <Route path="developer-tools" element={<AdminDeveloperTools />} />
+          <Route path="automation" element={<AdminAutomation />} />
+          <Route path="mcp" element={<AdminMcp />} />
+          <Route path="apps" element={<AdminApps />} />
+          <Route path="assets" element={<AssetCenter />} />
           <Route path="portal" element={<UserPortal />} />
         </Route>