chore: polish interrupt contract implementation

src/wf_core/models/steps.py

@@ -3,9 +3,8 @@ from __future__ import annotations
 from collections.abc import Mapping
 from typing import Annotated, Literal, Self
 
-from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
-
 from jsonschema import Draft202012Validator, SchemaError, validators
+from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
 
 from wf_core.models.conditions import Condition
 from wf_core.models.schemas import SchemaRef

tests/core/test_execution_results.py

@@ -184,7 +184,9 @@ async def test_interrupt_resume_payload_validates_before_state_mutation() -> Non
             ),
             EndNode(id="end", type="end", outcome="submitted"),
         ],
-        edges=[Edge.model_validate({"from": "ask", "outcome": "submitted", "to": "end"})],
+        edges=[
+            Edge.model_validate({"from": "ask", "outcome": "submitted", "to": "end"})
+        ],
     )
     interrupted = await execute_workflow_async(workflow, {}, {})