goal 异常退出记 interrupted，可断点续跑

长 goal 实弹（2026-10-28）：宿主机内存挤兑致回合挂起 59 分钟，恢复时 goal 进程异常退出、无结论行，云端旧语义（returncode 非 0 一律 failed）把可续跑的断点判成终局。

修法：host.py run_goal_loop 回合异常统一记 interrupted 并打印 goal interrupted after rounds 标记行；cloud/sandbox.py 四处 goal 解析同步新语义（标记或无结论非 0 退出 -> interrupted，有结论的非 0 退出仍 failed）；worker 终局审计名与状态对齐。单测：sandbox 新测 5 个、host 新测 1 个、更新旧测 1 个；三套件 cloud 1017、host 61、deploy 29 全绿。只本地提交，未推未部署。

cloud/worker.py

@@ -3770,13 +3770,19 @@ class Worker:
             cost_id = self._record_usage_cost(
                 task, actual_model, usage_total, stdout, fallback_count)
         if final_written:
+            # 审计名须与终态一致：interrupted 任务记 worker_failed
+            # 会把“可续跑的中断”误读成失败，误导后续排查。
             self._audit(task["project_id"],
                         "worker_quota_stop" if quota_stop else
                         ("worker_completed" if final == "completed"
+                         else "worker_interrupted"
+                         if final == "interrupted"
                          else "worker_failed"), task_id)
             log_event(self.logger,
                       "worker_quota_stop" if quota_stop else
                       ("worker_completed" if final == "completed"
+                       else "worker_interrupted"
+                       if final == "interrupted"
                        else "worker_failed"),
                       task_id=task_id, project_id=task["project_id"],
                       status=final)