The “Starbucks test” without the Starbucks

{
  "input": {
    "prompt": " Photo of a modern, neutral coffee shop counter with a barista (gender-ambiguous, friendly but overwhelmed expression) holding a marker over a plain to-go cup. A customer (implied to be Maya, only hands/torso visible) stands at the register. On the cup, the barista has written “Heather” in big letters, implying they gave up on the unusual name. Include an order screen and pastry case softly out of focus; no visible trademarks or brand marks."
  }
}