Add React inventory UI with tree and node context panel

frontend/src/App.tsx

@@ -1,33 +1,7 @@
-import { useState } from 'react';
-import './App.css';
-import { TopologyView } from './pages/TopologyView';
-import { InventoryView } from './pages/InventoryView';
-import { IPsView } from './pages/IPsView';
-import { DiscoveryJobsView } from './pages/DiscoveryJobsView';
-import { ServicesView } from './pages/ServicesView';
-import type { ViewKey } from './types';
+import { InventoryPage } from './pages/InventoryPage';
 
-export function App() {
-  const [current, setCurrent] = useState<ViewKey>('inventory');
-
-  const commonProps = { onNavigate: setCurrent };
-
-  const renderView = () => {
-    switch (current) {
-      case 'topology':
-        return <TopologyView {...commonProps} />;
-      case 'inventory':
-        return <InventoryView {...commonProps} />;
-      case 'ips':
-        return <IPsView {...commonProps} />;
-      case 'discovery':
-        return <DiscoveryJobsView {...commonProps} />;
-      case 'services':
-        return <ServicesView {...commonProps} />;
-      default:
-        return <InventoryView {...commonProps} />;
-    }
-  };
-
-  return renderView();
+function App() {
+  return <InventoryPage />;
 }
+
+export default App;