[x] I have searched open and closed issues for duplicates
It would be nice if Signal could run minimized in the system tray, that is, without the task bar window which is always open albeit not being used. Same way like (most?) other chat messengers like pidgin do.
Currently, I've created a desktop shortcut for Signal (via "Extensions Overview -> Details" ) because I do not use Chrome/Chromium. Then I've added the command of this shortcut (/usr/bin/chromium-browser --profile-directory=Default --app-id=XXX) to the startup programs so that Signal starts automatically. I do this on Windows and Ubuntu this way.
Now also having a command line option or setting to let this run minimized and only popup it up when there is a new message or just use the indicators in the system tray would be perfect.
I do not know how and if system tray indicators or to start minimized would be technically possible with Chrome web apps, but I think it is a valid user story
It is not possible.
For anyone who comes here and finds this, use the option --start-in-tray (e.g., /usr/bin/signal-desktop --start-in-tray)