fix error in gitignore

apps/orders/serializers.py

@@ -0,0 +1,31 @@
+from rest_framework import serializers
+
+from apps.orders.models import ProcessingOrder
+
+
+class ProcessingOrderSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ProcessingOrder
+        fields = "__all__"
+        read_only_fields = [
+            "id", "order_number", "workflow_version", "price_snapshot",
+            "status", "confirmed_at", "net_weight_kg", "gross_weight_kg", "tare_weight_kg",
+        ]
+
+
+class OrderCreateSerializer(serializers.Serializer):
+    reservation = serializers.UUIDField()
+    workflow = serializers.UUIDField(required=False, allow_null=True)
+
+
+class WeighingSerializer(serializers.Serializer):
+    gross = serializers.DecimalField(max_digits=12, decimal_places=2)
+    tare = serializers.DecimalField(max_digits=12, decimal_places=2)
+
+
+class StepSelectionSerializer(serializers.Serializer):
+    step_keys = serializers.ListField(child=serializers.CharField())
+
+
+class ConfirmSerializer(serializers.Serializer):
+    terms_accepted = serializers.BooleanField(default=True)