fine tune consent checkbox

> needs tuning -- can it be on the before page?
> 
> <img width="989" alt="Image" src="https://github.com/user-attachments/assets/22d5025a-8b88-4127-b61c-c6e803e66917" /> 

 _Originally posted by @jchris in [#19](https://github.com/fireproof-storage/dashboard/issues/19#issuecomment-2599481705)_