iter41-卡2：呈现层结构收敛批：67清＋2豁免＋2展平改善——拆私有族＋六状态件＋ui_kit收敛＋束收拢＋print删；含u14补做、并master并案与收尾产出物

game/presentation/views/board_fx_view.gd

@@ -89,19 +89,24 @@ func play_boss_shadow() -> void:
 
 # 完美封印：金光带加倍扫射 + 横幅占位（§2.2 最高档）
 func play_perfect_sweep() -> void:
-	for i in 2:
-		var band := ColorRect.new()
-		band.color = Color(COL_GOLD, 0.35)
-		band.size = Vector2(size.x, 14.0 + 10.0 * i)
-		band.position = Vector2(-size.x, size.y * 0.3 + 40.0 * i)
-		band.mouse_filter = Control.MOUSE_FILTER_IGNORE
-		add_child(band)
-		var tw := band.create_tween()
-		tw.tween_property(band, "position:x", size.x + 8.0, UiKit.motion(0.5 + 0.15 * i))
-		tw.tween_callback(band.queue_free)
+	for i in 3:
+		_spawn_sweep_band(i, size)
 	_show_banner("完美封印 ×2")
 
 
+## 单光带域（循环体提函数——自左掠过渐出）
+func _spawn_sweep_band(i: int, size: Vector2) -> void:
+	var band := ColorRect.new()
+	band.color = Color(COL_GOLD, 0.35)
+	band.size = Vector2(size.x, 14.0 + 10.0 * i)
+	band.position = Vector2(-size.x, size.y * 0.3 + 40.0 * i)
+	band.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	add_child(band)
+	var tw := band.create_tween()
+	tw.tween_property(band, "position:x", size.x + 8.0, UiKit.motion(0.5 + 0.15 * i))
+	tw.tween_callback(band.queue_free)
+
+
 # 封印命中：封印化暴击弹道加重占位（自棋盘上缘飞向 B 区敌人卡方向——越界即收）
 func play_seal_hit_projectile(heavy: bool) -> void:
 	var shot := ColorRect.new()