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根本原因: playbooks 表空 → NO_MATCH → 永遠走審批,從不自動修復 修復: startup 時從 alert_rules.yaml seed APPROVED Playbook(冪等) 確保自動修復鏈路有規則可用 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>