fix(Characters): 修复KukeChild在masterMine无效时崩溃的问题

refactor(Bullets): 重写Volcano子弹的旋转逻辑和动画
火山子弹现在会跟随鼠标指向，并添加了新的攻击动画

feat(Weapons): 更新Volcano武器的属性和行为
调整伤害、旋转速度等属性，移除多子弹生成逻辑

chore: 为Rooster角色添加Volcano武器

scripts/Contents/Characters/KukeChild.gd

@@ -21,4 +21,5 @@ func attack(type):
 	elif type == 1:
 		BulletBase.generate(ComponentManager.getBullet("HeavyCrystal"), self, findWeaponAnchor("normal"), position.angle_to_point(currentFocusedBoss.position))
 func kill():
-	masterMine.tryHeal(100)
+	if is_instance_valid(masterMine):
+		masterMine.tryHeal(100)