Improve UI make chat Interface CLEANER less cluttered rename usernames

### Your use case

#### What would you like to do?
Make the chat User Interface cleaner, less cluttered, easier on the eyes.

#### Why would you like to do it?
Because I'd like to get other people to use this chat instead of Whatsapp and others, but they will definitely complain big time about the annoying text cluttering everything, starting with @ blablablausername:server1.domain1.com which really sucks.

#### How would you like to achieve it?
Provide a way to rename/shorten the DISPLAYED username, underneath/hidden it can be whatever ugly cryptic thing you want and if you tap on it you can be shown the server and full address of user, but usually I just want names in the chat to be SHORT and simple like "John" and "Jill" and "Bill" etc not some long cryptic string with @ and colons in it going from one end screen to the other. Also other contextual channel setup info, all should be kept "very minimal" and just a dot somewhere to expand all..

On channel creation etc its not goot to have messages fill half phone screen talking about the creation of the channel or Direct Message setup. I don't need to see encryption enabled each time, put a tiny "lock" graphic you can tap for more details. And who wants some big color circle the size of a penny with first letter of your username. Its all just too "CLUTTERED" and needs to be much cleaner than it is now.

If this is all doable then please make it easier to see where/how, if it isn't, believe me this should be a "priority". Thanks!

### Have you considered any alternatives?

_No response_

### Additional context

_No response_