fix: bound unproven profile submissions and support single-worker takeover

modelhub_submmit_api/history_stats.py

@@ -257,7 +257,7 @@ def classify_failure(record: dict[str, Any]) -> str:
     status = str(record.get("status") or "").lower()
     verify_result = _numeric_verify_result(record.get("verifyResult"))
     if status in {"failed", "error", "cancelled", "canceled", "rejected", "timeout"}:
-        return "参数/模板问题"
+        return "任务失败_原因未确认"
     if status in WAITING_STATUSES or status in RUNNING_STATUSES or verify_result is None:
         return "排队中/未知"
     if verify_result is not None and verify_result < 0: