Add POI feature and imporve the overall backend implementation

frontend/src/components/domain/onboarding/steps/InventoryReviewStep.tsx

@@ -330,10 +330,11 @@ export const InventoryReviewStep: React.FC<InventoryReviewStepProps> = ({
         }
       }
 
-      // Complete the step with metadata
+      // Complete the step with metadata and inventory items
       onComplete({
         inventoryItemsCreated: inventoryItems.length,
         salesDataImported: salesImported,
+        inventoryItems: inventoryItems, // Pass the created items to the next step
       });
     } catch (error) {
       console.error('Error creating inventory items:', error);