Nano-Banana改图

curl --location --request POST 'https://api.ppchat.vip/v1beta/models/gemini-3-pro-image-preview:generateContent' \
--header 'x-goog-api-key: $GEMINI_API_KEY' \
--header 'Content-Type: application/json' \
--data-raw '{
      "contents": [{
        "parts":[
            {"text": "'\''Create a picture of my cat eating a nano-banana in a fancy restaurant under the Gemini constellation"},
            {
              "inline_data": {
                "mime_type":"image/jpeg",
                "data": "$IMG_BASE64"
              }
            }
        ]
      }]
    }'