Fix new services implementation 2

services/inventory/app/models/inventory.py

@@ -160,6 +160,14 @@ class Ingredient(Base):
     
     def to_dict(self) -> Dict[str, Any]:
         """Convert model to dictionary for API responses"""
+        # Map to response schema format - use ingredient_category as primary category
+        category = None
+        if self.ingredient_category:
+            category = self.ingredient_category.value
+        elif self.product_category:
+            # For finished products, we could map to a generic category
+            category = "other"
+        
         return {
             'id': str(self.id),
             'tenant_id': str(self.tenant_id),
@@ -167,6 +175,7 @@ class Ingredient(Base):
             'sku': self.sku,
             'barcode': self.barcode,
             'product_type': self.product_type.value if self.product_type else None,
+            'category': category,  # Map to what IngredientResponse expects
             'ingredient_category': self.ingredient_category.value if self.ingredient_category else None,
             'product_category': self.product_category.value if self.product_category else None,
             'subcategory': self.subcategory,