Small stuff here mostly improving colors, spacing, and typeface use
(leaning towards using UI font as most of the text in the agent panel is
actually UI font).

| Before | After |
|--------|--------|
| <img width="700" alt="Screenshot 2026-06-19 at 7  48@2x"
src="https://github.com/user-attachments/assets/b54da1de-e6ce-4e39-8d9d-6c375430e67c"
/> | <img width="600" alt="Screenshot 2026-06-19 at 7  47@2x"
src="https://github.com/user-attachments/assets/b3d5c704-6961-4ae2-9306-f6b70a641cdd"
/> |

Release Notes:

- N/A