feat: manage task process lifetimes and preserve turn history

web/static/i18n/en-US.json

@@ -1107,6 +1107,9 @@
     "autoRefresh": "Auto refresh",
     "historyHint": "Tip: Completed task history available. Check \"Show history\" to view.",
     "statusRunning": "Running",
+    "statusCleanupUnconfirmed": "Remote cancellation unconfirmed",
+    "statusCleaning": "Cleaning up",
+    "statusCleanupFailed": "Cleanup failed (retrying)",
     "statusCancelling": "Cancelling",
     "statusFailed": "Failed",
     "statusTimeout": "Timeout",

web/static/i18n/zh-CN.json

@@ -1095,6 +1095,9 @@
     "autoRefresh": "自动刷新",
     "historyHint": "提示：有已完成的任务历史，请勾选\"显示历史记录\"查看",
     "statusRunning": "执行中",
+    "statusCleanupUnconfirmed": "远端停止状态待确认",
+    "statusCleaning": "清理中",
+    "statusCleanupFailed": "清理异常（自动重试）",
     "statusCancelling": "取消中",
     "statusFailed": "执行失败",
     "statusTimeout": "执行超时",