Analyzes in the cloud and connection timeout

Hi there !
Thank you for the best game ever !
If click "Go deeper" and wait for a few hours - the cloud does not save, instead the page just reloads and all analysis progresses are reset.
1) Why does the page just reload after a few hours ?
2) Is it possible to do analyzes offline and send them to the cloud when connected to the Internet or when the connection is restored , as in the lichess mobile application for Android ? It would be very cool if there was a native application for desktop Linux 🐧

By the way , the cloud does not save solutions after the 14th move. Ok, maybe this is done to keep the cloud from being flooded with data that is unlikely to be requested too often.