feat(km): P1-1 KMWriter 統一契約 + 5 caller 切換 + M4 反查鏈補齊
12-Agent 全景診斷揪出 KM 寫入鏈路 5 條入口無統一契約,fire-and-forget 在 Pod recycle 時會丟失條目。本次抽 KMWriter 強制 7 條契約。 ## 7 條契約強制 1. 同步底線:強制 await asyncio.wait_for(timeout) 2. 重試:3 次指數退避 1s/2s/4s(OperationalError / 網路類例外) 3. 失敗回收:3 次後寫 Redis DLQ km:dlq + log 4. 觀測:structlog event + 預留 metric hook(P1-3 補 emitter) 5. 冪等:incident_id + path_type 為 unique key 6. 禁止吞例外:except 必須 log + raise/DLQ 7. M4 反查鏈:payload 含 approval_id 時自動填 related_approval_id 並回填 Path A ## Caller 切換(5 條入口統一介面) - incident_service.py:1086 Path A(KB extractor + km_conversion) - approval_execution.py:771 Path B-人工 - decision_manager.py:2178 Path B-自動成功(消除跨類私有方法調用 M1) - decision_manager.py:2200 Path B-自動失敗(修 B2 早期吞例外) - playbook_service.py:210 PlaybookKM(兩份 T0 報告都漏的第三條) ## M4 反查鏈補齊 - knowledge.py + models.py: 補 related_approval_id ORM 欄位 - 對齊 phase26_incident_km_integration.sql:20 schema(partial index 已存在) - approval↔KM 雙向反查鏈完整(dual-path 縫合線) ## Feature Flag (rollback 保險) - KM_WRITE_AWAIT=true (default): await + timeout + DLQ 強制 - KM_WRITE_AWAIT=false: fire-and-forget(舊行為) ## 測試 - apps/api/tests/test_km_writer.py: 18 測試全綠 覆蓋 success / timeout / retry / DLQ / 冪等 / KMWriteError / on_failure=raise / 反查鏈回填 - 1552 unit tests 全綠(無回歸) ## 驗收 飛輪閉環核心 — KM 寫入不再靜默丟失,AI 學習鏈不斷裂。 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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@@ -778,6 +778,14 @@ class KnowledgeEntryRecord(Base):
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nullable=True,
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comment="症狀模式 hash (16字元 SHA256 前綴),Anti-Pattern 閉環攔截使用",
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)
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# P1-1 2026-04-28 ogt + Claude Sonnet 4.6: M4 補反查鏈
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# phase26_incident_km_integration.sql 已建立欄位與 partial index
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# KMWriter.write() 會自動填入並回填 Path A 條目(approval → KM 雙向追蹤)
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related_approval_id: Mapped[str | None] = mapped_column(
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String(36),
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nullable=True,
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comment="關聯 ApprovalRequest ID,P1-1 反查鏈修復(approval → KM 追蹤)",
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)
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# Metrics
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view_count: Mapped[int] = mapped_column(
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@@ -806,6 +814,12 @@ class KnowledgeEntryRecord(Base):
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Index("ix_knowledge_created_at", "created_at"),
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# 2026-04-04 ogt: Phase 25 P1 — Anti-Pattern 快速查詢
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Index("ix_knowledge_symptoms_hash", "symptoms_hash"),
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# P1-1 2026-04-28 ogt + Claude Sonnet 4.6: M4 反查鏈 partial index(配合 phase26 migration)
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Index(
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"ix_knowledge_related_approval",
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"related_approval_id",
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postgresql_where=text("related_approval_id IS NOT NULL"),
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),
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)
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