{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-eastmanvillagehouse-xnqjx77h","versions":[{"created_at":"2026-07-02T21:52:04Z","element_count":88,"note":"5軸GA polish 38->91 by M5 (autonomous)","saved_by":"mcp","sha256":"a8612c0e795e3398fac317bdfdbd1f9c2ffefa52fdc6a6897e3fa0a53ada3863","version":3},{"created_at":"2026-07-02T21:45:27Z","element_count":119,"note":"loop3: 設計時延床 48.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"b9a5341b496b0fafdd86aebcdbfb09c237ed656854def9f2b9e95217471deb68","version":2},{"created_at":"2026-07-02T21:45:27Z","element_count":119,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}