{
  "model": "gpt-4.1-mini",
  "provider": {
    "sort": "success_rate"
  },
  "temperature": 0,
  "response_format": {
    "type": "json_object"
  },
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "text",
          "text": "Read both attached teaching images, not a real product. Return JSON with exact source English quotes and Chinese steps: buttons with position and operation/hold_seconds; indicator states; loading sequence and test print text; unsupported functions. Include every numeric timing and every ordering prerequisite. POWER is not an ordinary single click: transcribe its exact hold time from the manual. STATUS is an indicator only. Use no external printer facts. Never invent WiFi, Bluetooth, app, cutter, firmware. Preserve ambiguity as null."
        },
        {
          "type": "image_url",
          "image_url": {
            "url": "<local image; see input-provenance.json>"
          }
        },
        {
          "type": "image_url",
          "image_url": {
            "url": "<local image; see input-provenance.json>"
          }
        }
      ]
    }
  ]
}