<SlideHeader>

Persistent top bar — title, logo, slide number.

Name	Type	Default	Description
title?	string	—	Center text.
logo?	ReactNode	—	Left-side logo.
showSlideNumber?	boolean	false	Render "current / total" on the right.
children?	ReactNode	—	Extra right-side content (rendered before the slide number).

Place chrome inside any slide, or once outside <Slide> to show on every slide.