fix(system): 岗位导入补充必填校验，修复编码为空时的「系统异常」

tuqin

3 天以前 e60607fbdc127d7c622f2a20fb15fd9b04b0faac

1
{"already_assigned": 4, "assigned_at": "2026-10-13 09:40:28", "assigned_user_id": 244, "assigned_user_name": "李万娟", "matched_logs": 17, "original_operation_times_preserved": true, "original_request_evidence_preserved": true, "other_logs_unchanged": 155, "role_id": 166, "updated_logs": 13}