Header Redesign Code Review comment fixes

[jacob314]

The new header looks bad in the default mac terminal due to that terminal's extra line spacing.

Proposed mac terminal rendering (more symetric)

Fix issue where the username when signing in with google is missing due to useEffect that never runs because only saved the first frame rendered. To repro this is fixed, auth with google and verify you can see your username on startup.

[NoName7n11]

It also got changed for windows terminal, kinda liked the bulky "GEMINI" but this one also looks minimal and good