feat(武器): 调整茴香豆武器参数和效果

修改茴香豆武器的散射角度从40°降低到20°
添加反弹伤害衰减20%的机制
当特效纹理ID为1时不计入反弹次数
更新武器描述模板和数值计算
移除不再使用的HXDBoom特效脚本

scripts/Contents/Bullets/HXD.gd

@@ -14,7 +14,12 @@ func succeedToHit(_dmg: float, entity: EntityBase):
 		if is_instance_valid(newEntity):
 			look_at(newEntity.position)
 			bouncedTime += 1
-		EffectController.create(ComponentManager.getEffect("HXDBoom"), position).shot()
+	var effect = EffectController.create(ComponentManager.getEffect("HXDBoom"), position)
+	var textureId = randi_range(0, 4)
+	if textureId == 1:
+		bouncedTime -= 1
+	effect.particles.texture = load("res://resources/bullets/HXD/effect/%d.png" % textureId)
+	effect.shot()
 func split(newBullet: BulletBase, _index: int, _total: int, _lastBullet: float):
 	if newBullet is HXDBullet:
 		newBullet.bouncedTime = 0