fix: make workflow drafts explicitly opt in

src/wf_contract_manifest/generate.py

@@ -14,8 +14,15 @@ from .normalize import manifest_from_openrpc
 def generate_manifest() -> ContractManifest:
     """Compose the real server against an isolated store and normalize OpenRPC."""
     with TemporaryDirectory(prefix="wf-contract-manifest-") as directory:
-        server = build_local_static_workflow_server(Path(directory) / "store")
-        document = cast(dict[str, object], create_rpc_app(server).get_openrpc())
+        # The checked contract describes the complete opt-in API. Product
+        # composition remains draft-free by default; contract generation is
+        # the deliberate compatibility seam that asks for the full surface.
+        server = build_local_static_workflow_server(
+            Path(directory) / "store", drafts=True
+        )
+        document = cast(
+            dict[str, object], create_rpc_app(server, drafts=True).get_openrpc()
+        )
         # Normalization deliberately drops framework metadata that could carry
         # process-local paths or transport details.
         return manifest_from_openrpc(document)