[Feature Request] Update weight directly on landing screen

# Feature
It would be amazing if you could quickly adjust your bodyweight without having to navigate to the settings menu.

## Widget idea
<img width="344" height="156" alt="Image" src="https://github.com/user-attachments/assets/f2d21bbf-9aaa-4d4d-a0f6-bd7ce25f570c" />