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對應 issue #1(頂層 mira-dissolve T3)。 - contracts/ingest-candidate.json:ingest→graph 邊界契約(自頂層搬入) - contracts/README.md:標明候選(輸入)≠已存(triplet) - docs/3-specs/ingest-contract/design.md + tasks.md: - ensureTemplate 改 slot-diff 補丁(取代 early-return,免遷移腳本) - 補 KbdbClient.updateRecord(base PATCH /records/:id) - ingest 流程:驗證(422)→idempotency(uri+hash)→先 append 後 deprecate - triplet template 增 source_uri+content_hash slot 承載 idempotency - 跨 repo 協調點(3.6 圖工具併 KBDB MCP)明列需 arcrun 配合 總管已認可四個設計決定(issue #1 comment)。鐵律:零建表/零 SQL/零 migration。 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>