optional FastAPI service skeleton

src/kontextual_engine/__init__.py

@@ -13,6 +13,7 @@ from .artifacts import (
 )
 from .adapters.memory import InMemoryAssetRegistryRepository
 from .adapters.sqlite import SQLiteAssetRegistryRepository
+from .api import ServiceRuntime, create_app
 from .context import ContextAssembler, ContextItem, ContextPackage
 from .core import (
     Actor,
@@ -235,6 +236,7 @@ __all__ = [
     "RunManifest",
     "RunStatus",
     "Sensitivity",
+    "ServiceRuntime",
     "SourceReference",
     "SourceConnector",
     "SourcePayload",
@@ -271,6 +273,7 @@ __all__ = [
     "WorkflowTemplate",
     "bundle_digest",
     "content_digest",
+    "create_app",
     "default_transformation_registry",
 ]