refactor(utils): 禁用屏幕开关并优化 xset 查找逻辑

- 注释掉所有 BlankOpen/BlankClose 调用，启动不再关屏
- 将 xset 路径查找改为 init + sync.Once 缓存，避免重复执行
- 清理未使用的 utils 导入

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

internal/routes/play/only_video.go

@@ -6,14 +6,15 @@ import (
 	"game-driver/leaf"
 	"game-driver/pkg/utils"
 	"game-driver/pkg/video"
+
 	"go.uber.org/zap"
 )
 
 func OnlyVideo(c *leaf.Context) {
 	payload := leaf.Value[*schema.PlayModal](c, middleware.PayloadJSONKey)
 
-	utils.BlankOpen()
-	defer utils.BlankClose()
+	// utils.BlankOpen()
+	// defer utils.BlankClose()
 
 	if url, ok := payload.Game["video"]; ok {
 		path, local, err := utils.LinkVideo(url.(string))