fix: resolve pass keyword conflict in move_generator and game_controller

src/core/move_generator.gd

@@ -10,10 +10,10 @@ const BEAM_WIDTH := 50
 
 static func generate(hand: Array[Card], current_rank: int, config: RuleConfig) -> Array[HandEvaluator.EvaluatedPlay]:
     var results: Array[HandEvaluator.EvaluatedPlay] = []
-    var pass := HandEvaluator.EvaluatedPlay.new()
-    pass.type = -1
-    pass.primary_rank = 0
-    results.append(pass)
+    var pass_play := HandEvaluator.EvaluatedPlay.new()
+    pass_play.type = -1
+    pass_play.primary_rank = 0
+    results.append(pass_play)
     if hand.is_empty():
         return results
     var sorted := hand.duplicate(false)