Diagnose and triage cron job failures. Checks job states, identifies error patterns, prioritizes by criticality, generates health reports. Triggers on: cron failures, job health check, scheduled task errors, cron diagnosis, job not running, backup failed.

诊断和分类定时任务失败情况。检查任务状态，识别错误模式，按重要性优先排序，生成健康报告。触发条件：定时任务失败、任务健康检查、计划任务错误、定时任务诊断、任务未运行、备份失败