Images
Generate images (OpenAI compatible)
BaseURL：https://ai.amethyst.ltd/v1
生成图片
POST /images/generations示例：
curl https://ai.amethyst.ltd/v1/images/generations \
-H "Authorization: Bearer $AI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-image-1",
"prompt": "A clean, modern logo for Amethyst",
"size": "1024x1024"
}'响应示例（结构遵循 OpenAI）：
{
"created": 1710000000,
"data": [
{ "url": "https://..." }
]
}