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CD Pipeline / build-and-deploy (push) Has been cancelled
根因:create_incident_for_approval 建立 Incident 時從未查詢 AnomalyCounter
→ frequency_snapshot 永遠 null → 歷史按鈕顯示「無建立時快照」
signoz/sentry webhook 有寫,Alertmanager 路徑漏掉
修復:建立前 record_anomaly → 頻率快照存入 frequency_stats → PG 持久化
失敗無害(try/except,不阻斷主流程)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>