获取教练详情

{
    "code": 200,
    "message": "success",
    "data": {
        "id": 1,
        "user_id": 2,
        "name": "王教练",
        "specialty": "瑜伽、普拉提",
        "bio": "10年教学经验，擅长瑜伽和普拉提，曾获得多项瑜伽比赛奖项。持有国际瑜伽联盟认证证书。",
        "teaching_style": "温和耐心，注重细节，善于引导学员，让每个人都能在舒适的状态下练习。",
        "rating": 4.8,
        "total_reviews": 128,
        "course_tags": [
            "瑜伽",
            "普拉提",
            "拉伸",
            "冥想"
        ],
        "avatar": "https://example.com/coaches/1.jpg",
        "status": 1
    }
}