Https is end to end encryption and doesn't need to be on their road map
Encryption at rest could be an option but seeing as how many other projects have trouble with it (nsxtcloud), its probably best to have this at the fike system level with disc encryption
Last in checked, there is an open PR for the PWA Android app the expose the share function. That will allow this to work however you will have to install the PWA via chrome since the share feature for PWA is proprietary. Sucks because I use Firefox with a bunch of privacy features .