decomposer: fix validation failure for Migrate the kab_ingestion domain models, ports, GitHub SCM connector, and SharePoint CMS connector into the repository's app/ package.; Wire the migrated ingestion components into the agent application entry point, card, settings, triggers, governance, publication, and validation layers.; Populate every remaining placeholder file with working application, package, test, dependency, and Kubernetes content.; Verify the migrated agent and completed repository end to end.

app/kab_ingestion/ports/cms.py

@@ -0,0 +1,9 @@
+from typing import Protocol
+
+from ..domain.models import SourceDocument
+
+
+class CMSConnector(Protocol):
+    """Publish normalized source documents to a content system."""
+
+    def publish(self, document: SourceDocument) -> str: ...