fix: harden Python workflow client boundary

src/wf_client/__init__.py

@@ -5,22 +5,6 @@ from wf_platform import CapabilityRef, Page
 from .app import App
 from .authoring import EditableWorkflow
 from .capabilities import CapabilityResult, CapabilitySummary, RemoteCapability
-from .codec import (
-    DecodedRunResult,
-    DecodedTracePage,
-    decode_capabilities_page,
-    decode_capability_call,
-    decode_capability_diagnostics,
-    decode_capability_inspect,
-    decode_dependency_diagnostics,
-    decode_deployment,
-    decode_deployment_validation,
-    decode_deployments,
-    decode_run_result,
-    decode_trace_result,
-    decode_validate_artifact_plan,
-    decode_workflow_artifact,
-)
 from .deployments import Deployment, DeploymentValidation
 from .errors import (
     ArtifactNotFound,
@@ -35,7 +19,6 @@ from .errors import (
     ValidationFailed,
     WorkflowClientError,
 )
-from .protocols import WorkflowClientPort
 from .runs import Run, TracePage
 from .workflows import (
     ArtifactRef,
@@ -54,8 +37,6 @@ __all__ = [
     "CapabilityRef",
     "CapabilityResult",
     "CapabilitySummary",
-    "DecodedRunResult",
-    "DecodedTracePage",
     "Diagnostic",
     "DeploymentNotRunnable",
     "DeploymentRequired",
@@ -70,22 +51,9 @@ __all__ = [
     "TransportError",
     "ValidationFailed",
     "WorkflowClientError",
-    "WorkflowClientPort",
     "EditableWorkflow",
     "WorkflowArtifact",
     "WorkflowDiagnostic",
     "WorkflowValidation",
     "TracePage",
-    "decode_capabilities_page",
-    "decode_capability_call",
-    "decode_capability_diagnostics",
-    "decode_capability_inspect",
-    "decode_dependency_diagnostics",
-    "decode_deployment_validation",
-    "decode_deployments",
-    "decode_deployment",
-    "decode_run_result",
-    "decode_trace_result",
-    "decode_validate_artifact_plan",
-    "decode_workflow_artifact",
 ]