[UI] Import context (#11685)

* Refactor ImporterDrawer

- Use a single, globally accessible object
- Provide global state management

* Expose global importer state to the plugin interface

* Improve registration of data import serializers

* Update frontend version / docs

* Bump API version

src/backend/InvenTree/InvenTree/api_version.py

@@ -1,11 +1,14 @@
 """InvenTree API version information."""
 
 # InvenTree API version
-INVENTREE_API_VERSION = 470
+INVENTREE_API_VERSION = 471
 """Increment this API version number whenever there is a significant change to the API that any clients need to know about."""
 
 INVENTREE_API_TEXT = """
 
+v471 -> 2026-04-07 : https://github.com/inventree/InvenTree/pull/11685
+    - Adds data importer support for the "SalesOrderShipment" model
+
 v470 -> 2026-04-01 : https://github.com/inventree/InvenTree/pull/11659
     - Renames "is_staff" field to "is_admin" and updates help texts accordingly to highlight current security boundaries
 

src/backend/InvenTree/importer/registry.py

@@ -19,14 +19,14 @@ class DataImportSerializerRegister:
     def register(self, serializer) -> None:
         """Register a new serializer with the importer registry."""
         if not issubclass(serializer, DataImportSerializerMixin):
-            logger.debug('Invalid serializer class: %s', type(serializer))
+            logger.debug('Invalid serializer class: %s', serializer.__name__)
             return
 
         if not issubclass(serializer, Serializer):
-            logger.debug('Invalid serializer class: %s', type(serializer))
+            logger.debug('Invalid serializer class: %s', serializer.__name__)
             return
 
-        logger.debug('Registering serializer class for import: %s', type(serializer))
+        logger.debug('Registering serializer class for import: %s', serializer.__name__)
 
         if serializer not in self.supported_serializers:
             self.supported_serializers.append(serializer)

src/backend/InvenTree/order/serializers.py

@@ -1297,7 +1297,10 @@ class SalesOrderLineItemSerializer(
 
 @register_importer()
 class SalesOrderShipmentSerializer(
-    FilterableSerializerMixin, NotesFieldMixin, InvenTreeModelSerializer
+    DataImportExportSerializerMixin,
+    FilterableSerializerMixin,
+    NotesFieldMixin,
+    InvenTreeModelSerializer,
 ):
     """Serializer for the SalesOrderShipment class."""