查询历史任务

{
    "code": 0,
    "message": "获取成功",
    "data": {
        "tasks": [
            {
                "task_id": "gm31_679f1b2c3d4e5_1719293400",
                "prompt": "一只可爱的柴犬在樱花树下",
                "aspect_ratio": "1:1",
                "image_size": "1K",
                "x_channel": "gemini_31_t2i",
                "status": "completed",
                "progress": 100,
                "result_image_url": "https://oss.example.com/uploads/image/original/gm31_679f1b2c3d4e5_1719293400.png",
                "points": 0.58,
                "created_at": "2026-06-25 14:30:00"
            },
            {
                "task_id": "gm3pro_edit_679f1a1b2c3d4e_1719290000",
                "prompt": "变成Ghibli卡通风格",
                "aspect_ratio": "4:3",
                "image_size": "2K",
                "x_channel": "gemini_3_pro_edit",
                "status": "completed",
                "progress": 100,
                "result_image_url": "https://oss.example.com/uploads/image/original/gm3pro_edit_679f1a1b2c3d4e_1719290000.png",
                "points": 1.25,
                "created_at": "2026-06-25 13:00:00"
            },
            {
                "task_id": "gm31_679f1a1b2c3d4e_1719280000",
                "prompt": "夕阳下的城市",
                "aspect_ratio": "16:9",
                "image_size": "4K",
                "x_channel": "gemini_31_t2i",
                "status": "failed",
                "progress": 0,
                "result_image_url": null,
                "points": 0,
                "created_at": "2026-06-25 12:00:00"
            }
        ]
    }
}