FWIW, Session Buddy hasn't been updated since June.
.ldb files can't be read independently, unfortunately, so importing them isn't possible.
If you want to send the .ldb file to
sup...@sessionbuddy.com, I can take a look and try to restore it. Might be best to just zip the data folders and send everything.
> I suggest to implement auto backup feature ... to a chosen by user backup folder
This isn't possible with a web app, unfortunately. Saving to the file system outside of the browser's purview requires user intervention.
OPFS could be used for auto-backups but that won't save you when the browser profile gets corrupted or reset, which sounds like what might have happened. The only way to account for data loss risks related to browser bugs, crashes, quotas, etc is to store data in the cloud, which is a feature we're working on.
Hans