style: fix ruff format violations in subplan_service and tdd steps

Apply ruff auto-format to resolve CI lint failure (format check step).
No logic changes — pure whitespace/line-length reformatting.

features/steps/tdd_invariant_propagation_subplan_steps.py

@@ -226,11 +226,9 @@ def step_child_has_invariant_decisions(context: Context) -> None:
     child_plan_id: str = child_plan.identity.plan_id
 
     # Query the decision service for invariant_enforced decisions on the child plan
-    child_invariant_decisions: list[Decision] = (
-        context.decision_service.list_by_type(
-            child_plan_id,
-            DecisionType.INVARIANT_ENFORCED,
-        )
+    child_invariant_decisions: list[Decision] = context.decision_service.list_by_type(
+        child_plan_id,
+        DecisionType.INVARIANT_ENFORCED,
     )
 
     assert len(child_invariant_decisions) > 0, (
@@ -256,11 +254,9 @@ def step_child_has_n_invariant_decisions(context: Context, count: int) -> None:
     child_plan: Plan = result.child_plans[0]
     child_plan_id: str = child_plan.identity.plan_id
 
-    child_invariant_decisions: list[Decision] = (
-        context.decision_service.list_by_type(
-            child_plan_id,
-            DecisionType.INVARIANT_ENFORCED,
-        )
+    child_invariant_decisions: list[Decision] = context.decision_service.list_by_type(
+        child_plan_id,
+        DecisionType.INVARIANT_ENFORCED,
     )
 
     assert len(child_invariant_decisions) == count, (
@@ -287,11 +283,9 @@ def step_child_has_non_overridable_invariant(context: Context) -> None:
     child_plan: Plan = result.child_plans[0]
     child_plan_id: str = child_plan.identity.plan_id
 
-    child_invariant_decisions: list[Decision] = (
-        context.decision_service.list_by_type(
-            child_plan_id,
-            DecisionType.INVARIANT_ENFORCED,
-        )
+    child_invariant_decisions: list[Decision] = context.decision_service.list_by_type(
+        child_plan_id,
+        DecisionType.INVARIANT_ENFORCED,
     )
 
     assert len(child_invariant_decisions) > 0, (
@@ -301,9 +295,7 @@ def step_child_has_non_overridable_invariant(context: Context) -> None:
 
     # Verify the non_overridable invariant text was propagated
     expected_option: str = context.non_overridable_chosen_option
-    propagated_options: list[str] = [
-        d.chosen_option for d in child_invariant_decisions
-    ]
+    propagated_options: list[str] = [d.chosen_option for d in child_invariant_decisions]
     assert expected_option in propagated_options, (
         f"Non-overridable invariant chosen_option {expected_option!r} not found "
         f"in child plan decisions: {propagated_options}. "
@@ -311,9 +303,7 @@ def step_child_has_non_overridable_invariant(context: Context) -> None:
     )
 
 
-@then(
-    "the spawn should succeed with no invariant decisions recorded for the child"
-)
+@then("the spawn should succeed with no invariant decisions recorded for the child")
 def step_spawn_succeeds_no_invariants(context: Context) -> None:
     """Assert that spawn succeeds cleanly when parent has no invariant decisions."""
     assert context.spawn_error is None, (
@@ -330,11 +320,9 @@ def step_spawn_succeeds_no_invariants(context: Context) -> None:
     child_plan: Plan = result.child_plans[0]
     child_plan_id: str = child_plan.identity.plan_id
 
-    child_invariant_decisions: list[Decision] = (
-        context.decision_service.list_by_type(
-            child_plan_id,
-            DecisionType.INVARIANT_ENFORCED,
-        )
+    child_invariant_decisions: list[Decision] = context.decision_service.list_by_type(
+        child_plan_id,
+        DecisionType.INVARIANT_ENFORCED,
     )
 
     assert len(child_invariant_decisions) == 0, (

src/cleveragents/application/services/subplan_service.py

@@ -375,9 +375,7 @@ class SubplanService:
                 rationale=parent_decision.rationale,
                 context_snapshot=parent_decision.context_snapshot,
                 confidence_score=parent_decision.confidence_score,
-                alternatives_considered=list(
-                    parent_decision.alternatives_considered
-                ),
+                alternatives_considered=list(parent_decision.alternatives_considered),
             )
 
     # ------------------------------------------------------------------