Improve data fetching and handling for sales information on the platform

Updates `useQuery` hooks to explicitly parse JSON responses for sales data.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/ab880d72-1a34-4d36-b5be-9f44df85ed1a.jpg

client/src/components/NewSaleForm.tsx

@@ -57,11 +57,13 @@ export default function NewSaleForm() {
   const availableCategories = typeArticle ? ARTICLE_CATEGORY_MAPPING[typeArticle as keyof typeof ARTICLE_CATEGORY_MAPPING] || [] : [];
 
   const createSaleMutation = useMutation({
-    mutationFn: (saleData: any) =>
-      apiRequest('/api/sales', {
+    mutationFn: async (saleData: any) => {
+      const response = await apiRequest('/api/sales', {
         method: 'POST',
         body: JSON.stringify(saleData),
-      }),
+      });
+      return response.json();
+    },
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['/api/sales'] });
       toast({

client/src/components/SalesHistory.tsx

@@ -22,17 +22,20 @@ export default function SalesHistory({ canDelete = false }: SalesHistoryProps) {
   const [endDate, setEndDate] = useState('');
 
   // Query for sales
-  const { data: sales = [], isLoading } = useQuery<Sale[]>({
+  const { data: salesData, isLoading } = useQuery<Sale[]>({
     queryKey: ['/api/sales', startDate, endDate],
-    queryFn: () => {
+    queryFn: async () => {
       const params = new URLSearchParams();
       if (startDate) params.append('startDate', startDate);
       if (endDate) params.append('endDate', endDate);
       const queryString = params.toString();
-      return apiRequest(`/api/sales${queryString ? `?${queryString}` : ''}`);
+      const response = await apiRequest(`/api/sales${queryString ? `?${queryString}` : ''}`);
+      return response.json();
     },
   });
 
+  const sales = Array.isArray(salesData) ? salesData : [];
+
   // Delete mutation
   const deleteSaleMutation = useMutation({
     mutationFn: (saleId: number) =>