The squares’ coach (a stern rectangle) delivers the warning

{
  "input": {
    "prompt": " Medium shot illustration of a no-nonsense rectangle in a coach’s jacket, arms crossed, speaking to reporters. Quote on a lower-third graphic: “Respect the opponent. Respect the work.” The rectangle’s expression is severe; behind them, the two squares stand quietly, uncelebratory, and the defeated cubes limp away in the distance under dim corridor lights."
  }
}