fix: 调整子弹逻辑和粒子效果参数

修复子弹逻辑中hitbox和track的显示顺序问题，优化LGBTBoom粒子效果参数：
- 调整粒子数量从10增加到20
- 修改粒子初始速度和大小曲线
- 更新颜色渐变和透明度曲线

scripts/Contents/Bullets/BossAttack/KukeMC/HeavyCrystal.gd

@@ -12,8 +12,8 @@ func ai():
 		rotation = launcher.position.angle_to_point(launcher.currentFocusedBoss.getTrackingAnchor())
 		hitbox.disabled = true
 	else:
+		track.visible = false
+		hitbox.disabled = false
 		damage = speed / 5
 		PresetBulletAI.forward(self, rotation)
 		speed *= 1.2
-		track.visible = false
-		hitbox.disabled = false