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/__init__.py

@@ -0,0 +1,5 @@
+"""Content ingestion agent application package."""
+
+from .agent import create_agent_app
+
+__all__ = ["create_agent_app"]