OG T
fab65e7d7a
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fix(alerts): PENDING 收斂無 TTL → 老記錄永久封鎖 Telegram 告警
根因：find_by_fingerprint 的 PENDING 匹配條件無時間上限，
2026-04-12 建立的 3 筆 PENDING approval records（hit=77/30/17）
持續吃掉所有同指紋告警，造成 2+ 小時 Telegram 靜音。
修正（approval_db.py）：
- PENDING_TTL_HOURS = 24：PENDING 記錄逾 24h 不再收斂新告警
- 原本：OR(status=PENDING, created_at>=30min前)
- 修正：OR(PENDING AND created_at>=24h前, created_at>=30min前)
緊急修復：kubectl exec 直接將 7 筆過期 PENDING 記錄設為 expired，
即時恢復 Telegram 告警流（不等部署）。
Phase 6 AI 自我治理閉環（ADR-087）：
- feat(db): 新增 ai_governance_events 表 + 3 個 index（base.py + models.py）
- feat(svc): ai_slo_calculator.py — 7d 滾動 SLO（success/override/false_neg）
- feat(svc): trust_drift_detector.py — Playbook 信任度極端偏態偵測
- feat(job): kb_rot_cleaner.py — K8s API/Prom metric/老舊 incident_case 腐爛清理
- feat(svc): decision_manager.py — 自我降級守衛（SLO 違反 → 提高門檻/保守模式）
2026-04-15 ogt + Claude Sonnet 4.6（亞太）
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-15 18:56:26 +08:00
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