rememberEpubViewState
Remembers a PdfViewState for an EPUB document. Hoist it to drive an EpubView (or the shared PdfView state overload) from navigation buttons, a page indicator, a HUD. The state object is the single point of control.
The state type is shared with PDF (rememberPdfViewState): both a io.github.yuroyami.kitepdf.PdfDocument and an EpubDocument are io.github.yuroyami.kitepdf.core.KiteDocuments, so one viewer path serves both.