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/ports.py

@@ -0,0 +1,8 @@
+from typing import Protocol, Sequence
+from .domain.models import Document, IngestionRequest, IngestionResult
+
+class SourceConnector(Protocol):
+    def fetch(self, request: IngestionRequest) -> Sequence[Document]: ...
+
+class PublicationPort(Protocol):
+    def publish(self, document: Document) -> IngestionResult: ...