应用: 今日头条
任务: 打开今日头条，进入头条，搜索‘健康’
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 健康
step_id: 3
action: CLICK
step_id: 4
action: STOP