Update deployment health checks. Fix UI bugs.

frontend/src/features/vehicles/mobile/VehiclesMobileScreen.tsx

@@ -3,7 +3,7 @@
  * @ai-context Enhanced with Suspense, optimistic updates, and transitions
  */
 
-import React, { useTransition, useEffect } from 'react';
+import React, { useTransition, useMemo } from 'react';
 import { Box, Typography, Grid, Button } from '@mui/material';
 import AddIcon from '@mui/icons-material/Add';
 import { useVehicles } from '../hooks/useVehicles';
@@ -40,24 +40,22 @@ export const VehiclesMobileScreen: React.FC<VehiclesMobileScreenProps> = ({
 }) => {
   const { data: vehicles, isLoading } = useVehicles();
   const [_isPending, startTransition] = useTransition();
-  
+
+  // Stable reference for empty array (prevents infinite loop when vehicles is undefined)
+  const safeVehicles = useMemo(
+    () => (Array.isArray(vehicles) ? vehicles : []),
+    [vehicles]
+  );
+
   // React 19 optimistic updates
   const {
     optimisticVehicles,
     isPending: isOptimisticPending
-  } = useOptimisticVehicles(Array.isArray(vehicles) ? vehicles : []);
-  
-  // Enhanced search with transitions
-  const {
-    filteredVehicles,
-    updateVehicles
-  } = useVehicleSearch(optimisticVehicles);
-  
-  // Update search when optimistic vehicles change
-  useEffect(() => {
-    updateVehicles(optimisticVehicles);
-  }, [optimisticVehicles, updateVehicles]);
+  } = useOptimisticVehicles(safeVehicles);
   
+  // Enhanced search with transitions (auto-syncs when vehicles change)
+  const { filteredVehicles } = useVehicleSearch(optimisticVehicles);
+
   const handleVehicleSelect = (vehicle: Vehicle) => {
     // Use transition to avoid blocking UI during navigation
     startTransition(() => {