Improve UI of Settings section

See here:

<img width="326" height="423" alt="Image" src="https://github.com/user-attachments/assets/b5a76f97-a2de-4d51-89fb-602e668d34bb" />


More spacing around quit (and generally improve UI of context menu)
<img width="306" height="418" alt="Image" src="https://github.com/user-attachments/assets/37c001a2-0de8-464f-a80e-30896cf6ee20" />


macOS 26.2