style: apply ruff format to evolution_of_trust game files

Author: rororowyourboat

packages/gds-examples/games/evolution_of_trust/model.py

@@ -40,10 +40,10 @@
 # Payoff parameters — Nicky Case's version: T > R > P > S, 2R > T + S
 # ======================================================================
 
-R = 2   # Reward (mutual cooperation)
-T = 3   # Temptation (defect while other cooperates)
+R = 2  # Reward (mutual cooperation)
+T = 3  # Temptation (defect while other cooperates)
 S = -1  # Sucker (cooperate while other defects)
-P = 0   # Punishment (mutual defection)
+P = 0  # Punishment (mutual defection)
 
 # ======================================================================
 # Atomic Games — OGS primitives

packages/gds-examples/games/evolution_of_trust/strategies.py

@@ -99,8 +99,7 @@ class GrimTrigger:
 
     name = "Grim Trigger"
     description = (
-        "Cooperates until opponent defects once, "
-        "then defects forever. Unforgiving."
+        "Cooperates until opponent defects once, then defects forever. Unforgiving."
     )
 
     def __init__(self) -> None:
@@ -134,7 +133,10 @@ class Detective:
     )
 
     _probe_sequence: ClassVar[list[str]] = [
-        COOPERATE, DEFECT, COOPERATE, COOPERATE,
+        COOPERATE,
+        DEFECT,
+        COOPERATE,
+        COOPERATE,
     ]
 
     def __init__(self) -> None:

packages/gds-examples/games/evolution_of_trust/test_model.py

@@ -319,8 +319,11 @@ def test_noise_flips_actions(self):
 
         rng = _random.Random(42)
         result = play_match(
-            AlwaysCooperate(), AlwaysCooperate(),
-            rounds=10, noise=1.0, rng=rng,
+            AlwaysCooperate(),
+            AlwaysCooperate(),
+            rounds=10,
+            noise=1.0,
+            rng=rng,
         )
         # With noise=1.0, cooperate flips to defect
         defects = sum(1 for a, b in result.history if a == DEFECT or b == DEFECT)