Mobile Bug Fixes

frontend/src/features/vehicles/hooks/useVehicles.ts

@@ -23,6 +23,8 @@ export const useVehicles = () => {
     queryKey: ['vehicles'],
     queryFn: vehiclesApi.getAll,
     enabled: isAuthenticated && !isLoading,
+    staleTime: 5 * 60 * 1000, // 5 minutes - prevent unnecessary refetches
+    gcTime: 10 * 60 * 1000, // 10 minutes cache time
     retry: (failureCount, error: any) => {
       // Retry 401 errors up to 3 times for mobile auth timing issues
       if (error?.response?.status === 401 && failureCount < 3) {
@@ -32,6 +34,8 @@ export const useVehicles = () => {
       return false;
     },
     retryDelay: (attemptIndex) => Math.min(1000 * 2 ** attemptIndex, 30000),
+    refetchOnWindowFocus: false, // Prevent refetch on window focus
+    refetchOnMount: false, // Only fetch on mount if data is stale
   });
 };