Bug Description
On 13-inch devices (1440×900 viewport), the onboarding modal's Previous and Next navigation buttons are not visible on the first two steps, "Natural Language Queries" and "Available Tools". The buttons exist but are pushed below the visible modal area, requiring users to scroll the entire modal to find them. Most users would not realise the buttons are there, making the onboarding flow feel broken.
Expected Behavior
The Previous/Next navigation buttons should always be visible at the bottom of the modal on all screen sizes, including 13-inch laptops.
Actual Behavior
The buttons are pushed below the visible area of the modal. Users must scroll within the modal to reach them, with no visual indication that scrolling is needed.