Task: Move darkmode toggle to right side of navbar

[2nPlusOne]

Move darkmode toggle to right side of navbar

Description

The darkmode toggle is usually located at the top right of the navbar in most sites. Let's move the toggle from the bottom left of the footer to the top right of the navbar.

Subtasks

• Move the element into the navbar at the end of the container with the links
• If there is layout shift due to deferred rendering until the component mounts (see this), render an empty skeleton element in its place to prevent the shift. You would just modify the return value in the isMounted conditional from null to the empty placeholder.

Acceptance Criteria

• The darkmode toggle is always visible at the top right of the navbar
• There is no layout shift when the page loads
• The darkmode toggle is focusable and selectable with the keyboard