feat(Phase 3): 學習閉環重建 — 三根因修復 + 2x EWMA + Evolver Agent
ADR-083 Phase 3 學習閉環重建: **三根因修復** - approval_execution.py: fire-and-forget create_task → await asyncio.wait_for(timeout=30) × 2 (成功路徑 L265 + 失敗路徑 L353,超時記錄 learning_trigger_timeout metric,主流程不 crash) - models/approval.py: ApprovalRequestBase 新增 matched_playbook_id 欄位 - decision_manager.py: _auto_execute 建立 ApprovalRequest 時填充 matched_playbook_id - learning_service.py: 雙路徑查找 _matched_pb_id(matched_playbook_id + metadata fallback) **2x EWMA 負向強化** - models/playbook.py: 新增 trust_score: float = 0.3(EWMA 動態信任度欄位) - repositories/playbook_repository.py: update_stats 加 EWMA 成功: trust = 0.9 × old + 0.1 × 1.0 失敗: trust = 0.8 × old + 0.2 × 0.0(衰減速度 2x) trust < 0.1 → log warning,等 Evolver 封存 **Evolver Agent(新建)** - services/playbook_evolver.py: 三功能全靜態規則 1. 低信任封存: trust < 0.1 → DEPRECATED 2. 休眠封存: 30d 未使用 AND trust < 0.5 → DEPRECATED 3. 相似合併: 症狀 Jaccard > 0.9 → 保留高 trust,封存低 trust AIOPS_P3_EVOLVER_ENABLED=False 預設關閉 **文件** - ADR-083 學習閉環重建 - MASTER §8 Phase 3 完工記錄 AIOPS_P3_ENABLED=False(預設),骨架就位等統帥批准開啟 Co-Authored-By: Claude Sonnet 4.6(亞太)<noreply@anthropic.com>
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@@ -1478,6 +1478,10 @@ class DecisionManager:
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# 建立虛擬 ApprovalRequest (auto_execute — 不需人工審核)
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_risk = token.proposal_data.get("risk_level", "low")
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# ADR-083 Phase 3: 傳遞 matched_playbook_id,學習迴路 EWMA 才能觸發
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# Playbook RAG 命中時 proposal_data["playbook_id"] 會有值(見 _try_playbook_match)
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# 2026-04-15 ogt + Claude Sonnet 4.6(亞太): Phase 3 matched_playbook_id 修復
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_matched_playbook_id = token.proposal_data.get("playbook_id")
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approval = ApprovalRequest(
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incident_id=incident.incident_id,
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action=action,
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@@ -1486,6 +1490,7 @@ class DecisionManager:
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required_signatures=0,
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status=ApprovalStatus.APPROVED,
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risk_level=_risk,
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matched_playbook_id=_matched_playbook_id,
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)
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# ADR-071-I: 執行前抓 metrics_before 快照 (2026-04-11 Claude Sonnet 4.6)
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