How can i check for first startup of the Dashboard?

Hi my name is Elijah,

i'd like to have a startup page made with the ui_builder node. The thing is i already have the page, but i don't know how to check for first startup and let NodeRed redirect to the /startup page if it is the first startup. If you fill out the form on the startup page it redirects you to the normal dashboard with a button - that works. After that if you reopen it in the browser, it should only display the dashboard. Not the startup page anymore.

My question is:
How can i check for the first startup of node red? Is there a built-in method? And how can i automatically redirect the user to the startup page inside the browser if it is the first startup?

Thanks for your time!

Use an inject node set to fire on start up.