Avoid opening log output before start &

Replace tracing logs with task monitor

cmd/sing-box/cmd_run.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -193,7 +194,7 @@ func run() error {
 }
 
 func closeMonitor(ctx context.Context) {
-	time.Sleep(3 * time.Second)
+	time.Sleep(C.DefaultStopFatalTimeout)
 	select {
 	case <-ctx.Done():
 		return

cmd/sing-box/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"os"
 	"time"
 
@@ -37,7 +38,7 @@ func main() {
 
 func preRun(cmd *cobra.Command, args []string) {
 	if disableColor {
-		log.SetStdLogger(log.NewFactory(log.Formatter{BaseTime: time.Now(), DisableColors: true}, os.Stderr, nil).Logger())
+		log.SetStdLogger(log.NewDefaultFactory(context.Background(), log.Formatter{BaseTime: time.Now(), DisableColors: true}, os.Stderr, "", nil, false).Logger())
 	}
 	if workingDir != "" {
 		_, err := os.Stat(workingDir)