renderToImage
fun renderToImage(page: EpubPage, scale: Double = 1.0, background: Int = Color.WHITE, theme: ReaderTheme? = null): Image
Render page into a freshly-allocated Skia Image. The caller owns the returned object and should call close() (or use encodeToPng) once done. Skia images hold off-heap memory.
fun renderToImage(page: EpubPage, scale: Double = 1.0, background: Int = Color.WHITE, theme: ReaderTheme? = null, maxPixels: Long): Image
renderToImage with an explicit allocation ceiling.