Fix expense to be nullable without raw material.

internal/transformer/analytics_transformer.go

@@ -172,10 +172,10 @@ func PurchasingAnalyticsModelToContract(resp *models.PurchasingAnalyticsResponse
 			Date:                      item.Date,
 			Purchases:                 item.Purchases,
 			RawMaterialPurchases:      item.RawMaterialPurchases,
-			NonInventoryPurchases:     item.NonInventoryPurchases,
+			ExpensePurchases:          item.ExpensePurchases,
 			PurchaseOrders:            item.PurchaseOrders,
 			RawMaterialPurchaseOrders: item.RawMaterialPurchaseOrders,
-			NonInventoryExpenseCount:  item.NonInventoryExpenseCount,
+			ExpenseCount:              item.ExpenseCount,
 			Quantity:                  item.Quantity,
 			Ingredients:               item.Ingredients,
 			Vendors:                   item.Vendors,
@@ -216,10 +216,10 @@ func PurchasingAnalyticsModelToContract(resp *models.PurchasingAnalyticsResponse
 		Summary: contract.PurchasingSummary{
 			TotalPurchases:            resp.Summary.TotalPurchases,
 			RawMaterialPurchases:      resp.Summary.RawMaterialPurchases,
-			NonInventoryPurchases:     resp.Summary.NonInventoryPurchases,
+			ExpensePurchases:          resp.Summary.ExpensePurchases,
 			TotalPurchaseOrders:       resp.Summary.TotalPurchaseOrders,
 			RawMaterialPurchaseOrders: resp.Summary.RawMaterialPurchaseOrders,
-			NonInventoryExpenseCount:  resp.Summary.NonInventoryExpenseCount,
+			ExpenseCount:              resp.Summary.ExpenseCount,
 			TotalQuantity:             resp.Summary.TotalQuantity,
 			AveragePurchaseOrderValue: resp.Summary.AveragePurchaseOrderValue,
 			TotalIngredients:          resp.Summary.TotalIngredients,

internal/transformer/analytics_transformer_test.go

@@ -61,20 +61,20 @@ func TestPurchasingAnalyticsModelToContractCopiesOutletName(t *testing.T) {
 		Summary: models.PurchasingSummary{
 			TotalPurchases:            300,
 			RawMaterialPurchases:      125,
-			NonInventoryPurchases:     175,
+			ExpensePurchases:          175,
 			TotalPurchaseOrders:       3,
 			RawMaterialPurchaseOrders: 1,
-			NonInventoryExpenseCount:  2,
+			ExpenseCount:              2,
 		},
 		Data: []models.PurchasingAnalyticsData{
 			{
 				Date:                      now,
 				Purchases:                 300,
 				RawMaterialPurchases:      125,
-				NonInventoryPurchases:     175,
+				ExpensePurchases:          175,
 				PurchaseOrders:            3,
 				RawMaterialPurchaseOrders: 1,
-				NonInventoryExpenseCount:  2,
+				ExpenseCount:              2,
 			},
 		},
 	})
@@ -85,14 +85,14 @@ func TestPurchasingAnalyticsModelToContractCopiesOutletName(t *testing.T) {
 	require.Equal(t, outletName, *result.OutletName)
 	require.Equal(t, float64(300), result.Summary.TotalPurchases)
 	require.Equal(t, float64(125), result.Summary.RawMaterialPurchases)
-	require.Equal(t, float64(175), result.Summary.NonInventoryPurchases)
+	require.Equal(t, float64(175), result.Summary.ExpensePurchases)
 	require.Equal(t, int64(3), result.Summary.TotalPurchaseOrders)
 	require.Equal(t, int64(1), result.Summary.RawMaterialPurchaseOrders)
-	require.Equal(t, int64(2), result.Summary.NonInventoryExpenseCount)
+	require.Equal(t, int64(2), result.Summary.ExpenseCount)
 	require.Len(t, result.Data, 1)
 	require.Equal(t, float64(300), result.Data[0].Purchases)
 	require.Equal(t, float64(125), result.Data[0].RawMaterialPurchases)
-	require.Equal(t, float64(175), result.Data[0].NonInventoryPurchases)
+	require.Equal(t, float64(175), result.Data[0].ExpensePurchases)
 }
 
 func TestPurchasingAnalyticsModelToContractOmitsNilOutletName(t *testing.T) {

internal/transformer/purchase_order_transformer_test.go

@@ -12,15 +12,19 @@ import (
 )
 
 func TestCreatePurchaseOrderRequestToModelAllowsMissingDueDate(t *testing.T) {
+	ingredientID := uuid.New()
+	quantity := 1.0
+	unitID := uuid.New()
+
 	result, err := CreatePurchaseOrderRequestToModel(&contract.CreatePurchaseOrderRequest{
 		VendorID:        uuid.New(),
 		PONumber:        "PO-001",
 		TransactionDate: "2026-05-29",
 		Items: []contract.CreatePurchaseOrderItemRequest{
 			{
-				IngredientID: uuid.New(),
-				Quantity:     1,
-				UnitID:       uuid.New(),
+				IngredientID: &ingredientID,
+				Quantity:     &quantity,
+				UnitID:       &unitID,
 				Amount:       1000,
 			},
 		},