fix(tasks): v9 type filter now matches all equivalent trigger sources

The v9 ?type= query param mapped each value to a single TriggerSource,
but the serializer maps multiple sources to the same v9 type value.
A task serialized as "auto_task" would not appear when filtering by
?type=auto_task if its trigger_source was email_consume or
folder_consume. Same issue for "manual_task" missing web_ui and
api_upload sources. Changed to trigger_source__in with the full set
of sources for each v9 type value.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/documents/tests/test_api_tasks.py

@@ -422,8 +422,8 @@ class TestGetTasksV9:
         assert len(response.data) == 1
         assert response.data[0]["task_name"] == "consume_file"
 
-    def test_filter_by_type_maps_to_trigger_source(self, v9_client: APIClient) -> None:
-        """?type=scheduled_task filter maps to trigger_source=scheduled for v9 compatibility."""
+    def test_filter_by_type_scheduled_task(self, v9_client: APIClient) -> None:
+        """?type=scheduled_task matches trigger_source=scheduled only."""
         PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.SCHEDULED)
         PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.WEB_UI)
 
@@ -433,6 +433,42 @@ class TestGetTasksV9:
         assert len(response.data) == 1
         assert response.data[0]["type"] == "scheduled_task"
 
+    def test_filter_by_type_auto_task_includes_all_auto_sources(
+        self,
+        v9_client: APIClient,
+    ) -> None:
+        """?type=auto_task matches system, email_consume, and folder_consume tasks."""
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.SYSTEM)
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.EMAIL_CONSUME)
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.FOLDER_CONSUME)
+        PaperlessTaskFactory(
+            trigger_source=PaperlessTask.TriggerSource.MANUAL,
+        )  # excluded
+
+        response = v9_client.get(ENDPOINT, {"type": "auto_task"})
+
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 3
+        assert all(t["type"] == "auto_task" for t in response.data)
+
+    def test_filter_by_type_manual_task_includes_all_manual_sources(
+        self,
+        v9_client: APIClient,
+    ) -> None:
+        """?type=manual_task matches manual, web_ui, and api_upload tasks."""
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.MANUAL)
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.WEB_UI)
+        PaperlessTaskFactory(trigger_source=PaperlessTask.TriggerSource.API_UPLOAD)
+        PaperlessTaskFactory(
+            trigger_source=PaperlessTask.TriggerSource.SCHEDULED,
+        )  # excluded
+
+        response = v9_client.get(ENDPOINT, {"type": "manual_task"})
+
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 3
+        assert all(t["type"] == "manual_task" for t in response.data)
+
 
 @pytest.mark.django_db()
 class TestAcknowledge: