fix(core): use for-loop copy in _make_result to avoid Array.duplicate type loss

src/core/hand_evaluator.gd

@@ -50,7 +50,10 @@ static func _make_result(type: int, primary_rank: int, is_pure: bool, cards1: Ar
 	var r := EvaluatedPlay.new()
 	r.type = type
 	r.primary_rank = primary_rank
-	r.cards = cards1.duplicate(false)
+	var duped: Array[Card] = []
+	for c in cards1:
+		duped.append(c)
+	r.cards = duped
 	r.is_pure_bomb = is_pure
 	return r
 

src/ui/scenes/training_room.gd

@@ -145,8 +145,10 @@ func _on_player_passed(player_idx: int) -> void:
 
 func _show_table_cards(cards: Array[Card]) -> void:
 	_clear_table_cards()
-	# 按 rank 排序
-	var sorted_cards: Array[Card] = cards.duplicate(false)
+	# 按 rank 排序（用 for-loop 拷贝避免 Array.duplicate() 丢类型信息）
+	var sorted_cards: Array[Card] = []
+	for c in cards:
+		sorted_cards.append(c)
 	sorted_cards.sort_custom(func(a: Card, b: Card): return a.compare_to(b) < 0)
 	
 	var total_width := sorted_cards.size() * 60