fix: 调整Cogwheel子弹减速逻辑并移除Rooster测试代码

调整Cogwheel子弹的减速系数slow从乘以2改为固定0.5，使减速更平滑
移除Rooster角色中非发布版本的额外子弹数量测试代码

scripts/Contents/Bullets/Cogwheel.gd

@@ -19,7 +19,7 @@ func ai():
 	else:
 		speed = initialSpeed * (rotateSpeed / initialRotate)
 	if rotateSpeed >= 0 and rotateSpeed / slow <= 0:
-		slow *= 2
+		slow = 0.5
 	dotTime = 1000 / (rotateSpeed)
 	rotateSpeed -= slow
 func applyDot():

scripts/Contents/Characters/Rooster.gd

@@ -15,8 +15,6 @@ func register():
 				EffectController.create(ComponentManager.getEffect("BloodFall"), texture.global_position).shot()
 	)
 	chargeParticle.emitting = false
-	if !WorldManager.isRelease():
-		fields[FieldStore.Entity.EXTRA_BULLET_COUNT] = 3
 
 func ai():
 	texture.play("walk")