异步任务生命周期

const terminalStatuses = new Set([-1, 1])
let delay = 1000

while (true) {
  const query = new URLSearchParams({ task_id: taskId })
  const response = await fetch(`https://api.aichs365.com/api/v1/image_generation_query?${query}`, {
    headers: { 'X-Legacy-Token': token }
  })
  const payload = await response.json()
  if (!response.ok || !payload.success) throw new Error(payload.message || '查询任务失败')

  if (terminalStatuses.has(payload.data.status)) {
    if (payload.data.status === -1) throw new Error(payload.data.error_message || '任务失败')
    return payload.data
  }

  await new Promise((resolve) => setTimeout(resolve, delay + Math.random() * 300))
  delay = Math.min(Math.round(delay * 1.5), 10000)
}