创建诊断任务

POST /api/open/runs
Authorization: Bearer <API_TOKEN>
Content-Type: application/json

{
  "file_id": "of_...",
  "pipeline": "bp_diagnosis",
  "target": "export_optimization"
}

{
  "code": 0,
  "message": "流水线已创建，等待执行",
  "data": {
    "pipeline_run_id": "uuid",
    "status": "QUEUED",
    "queue_message_id": "queue-task-id"
  }
}