feat(武器系统): 为红水晶武器添加水晶碎片弹射效果

新增水晶碎片子弹类型，当红水晶爆炸时会向随机方向发射碎片
修改红水晶武器配置，添加碎片数量和伤害百分比属性
更新武器描述以反映新功能

scripts/Contents/Bullets/CrystalBlock.gd

@@ -0,0 +1,5 @@
+extends BulletBase
+class_name CrystalBlockBullet
+
+func ai():
+	PresetBulletAI.forward(self, rotation)

scripts/Contents/Bullets/CrystalBlock.gd.uid

@@ -0,0 +1 @@
+uid://2fv75mmhvjuc

scripts/Contents/Bullets/RedCrystal.gd

@@ -2,6 +2,7 @@ extends BulletBase
 class_name RedCrystalBullet
 
 var radius: float = 0
+var percent: float = 0
 
 func register():
 	hitbox.shape = hitbox.shape.duplicate()
@@ -11,4 +12,7 @@ func ai():
 func destroy(_beacuseMap: bool):
 	hitbox.shape.radius = radius
 	EffectController.create(ComponentManager.getEffect("RedCrystalExplosion"), global_position).shot()
+	for bullet in BulletBase.generate(ComponentManager.getBullet("CrystalBlock"), launcher, position, deg_to_rad(randf_range(0, 360))):
+		if bullet is CrystalBlockBullet:
+			bullet.baseDamage = baseDamage * percent
 	await TickTool.millseconds(100)