srecord noeq G22ChallengePanel(G22Challenge challenge) is Swingable {
  transient int randomSeed = randomInt();
  transient JPanel imagesPanel = jline();
  
  visual jvsplit(
    northAndCenterWithMargin(
      jRightAlignedLine(withLabel("Random seed:", dm_label(intToHex_upper(randomSeed)))),
      jCenteredRaisedSection("Images", jscrollHorizontal(imagesPanel))
    ),
    jCenteredSection("Analysis",
      jTodo()
    )
  );
}