diff --git a/features/steps/tdd_context_tier_defaults_1443_steps.py b/features/steps/tdd_context_tier_defaults_1443_steps.py
index 88fd5d96b..321ed5f79 100644
--- a/features/steps/tdd_context_tier_defaults_1443_steps.py
+++ b/features/steps/tdd_context_tier_defaults_1443_steps.py
@@ -49,6 +49,7 @@ def step_when_invoke_budget_helper(context: Any) -> None:
 
 # --- Budget capacity assertions (avoid collision with {val:d} param patterns) ---
 
+
 @then("the budget hot capacity matches 16000")
 def step_then_budget_hot_16000(context: Any) -> None:
     """Verify budget.max_tokens_hot is the spec value, not the old wrong one."""
@@ -72,6 +73,7 @@ def step_then_budget_cold_500(context: Any) -> None:
 
 # --- Module constant scenarios ---
 
+
 @given("the module default constants exist")
 def step_given_module_constants_exist(context: Any) -> None:
     """Verify we can import the module-level DEFAULT_MAX_* constants."""
@@ -97,6 +99,7 @@ def step_then_module_constants_correct(context: Any) -> None:
 
 # --- Anti-regression assertion ---
 
+
 @then("every budget field must NOT be an old wrong default value")
 def step_then_budget_not_legacy(context: Any) -> None:
     """Ensure none of the three fields reverted to old wrong defaults."""