Refactor "string truncate" (#32984)

routers/api/actions/runner/runner.go

@@ -69,7 +69,7 @@ func (s *Service) Register(
 	labels := req.Msg.Labels
 
 	// create new runner
-	name, _ := util.SplitStringAtByteN(req.Msg.Name, 255)
+	name := util.EllipsisDisplayString(req.Msg.Name, 255)
 	runner := &actions_model.ActionRunner{
 		UUID:        gouuid.New().String(),
 		Name:        name,

routers/web/repo/compare.go

@@ -664,7 +664,7 @@ func PrepareCompareDiff(
 	}
 	if len(title) > 255 {
 		var trailer string
-		title, trailer = util.SplitStringAtByteN(title, 255)
+		title, trailer = util.EllipsisDisplayStringX(title, 255)
 		if len(trailer) > 0 {
 			if ctx.Data["content"] != nil {
 				ctx.Data["content"] = fmt.Sprintf("%s\n\n%s", trailer, ctx.Data["content"])