Aegis is just for Android. This is about a desktop program being discontinued.

That emoji is called “hot beverage”.

A cup of a steaming-hot beverage, usually taken as coffee or tea. Sometimes shown on a saucer.

https://emojipedia.org/hot-beverage

Does KDE Connect do what you want?

Maybe a better term is field-replaceable batteries. It’s great for the longevity of a device to be able to install a new battery in a few minutes with just a screwdriver, but I miss the earlier days of cell phones where you could keep a spare battery in your bag while out and about and swap it out with the dead battery in your phone in just a couple seconds.

You can, but users on their instance can’t