feat(子弹): 增强鸡毛箭和鸡毛弓效果

- 为 ChickSprint 子弹添加 atk 属性并调整伤害计算
- 猫角色攻击时设置 ChickSprint 子弹的 atk 为 0.2
- 调整 Bow 子弹的生成延迟和角度计算精度
- 将 Bow 的箭矢数量从 1 增加到 2
- 增强 Arrow 子弹的速度、射程和视觉效果

scripts/Contents/Bullets/Bow.gd

@@ -5,14 +5,14 @@ var count: int = 0
 var atk: float = 0
 
 func spawn():
-	await TickTool.millseconds(250)
+	await TickTool.millseconds(1000)
 	var startAngle = rotation - deg_to_rad(count * 10.0 / 2)
 	for c in count:
 		for i in BulletBase.generate(
 			ComponentManager.getBullet("Arrow"),
 			launcher,
 			position,
-			startAngle + deg_to_rad(c * 10)
+			startAngle + deg_to_rad(c * 10.0)
 		):
 			var bullet: Arrow = i
 			bullet.atk = atk

scripts/Contents/Bullets/ChickSprint.gd

@@ -1,11 +1,13 @@
 extends BulletBase
 class_name ChickSprint
 
+var atk: float = 1
+
 func register():
 	speed = 0
 	penerate = 1
 func ai():
-	damage = launcher.velocity.length() / 500
+	damage = launcher.velocity.length() / 500 * atk
 	PresetBulletAI.lockLauncher(self, launcher, true)
 	if !launcher.sprinting:
 		tryDestroy()