{"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-house-w1tozwht","versions":[{"created_at":"2026-06-10T23:56:52Z","element_count":74,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"e60ebe1fb32522ab7ec1b4ff7a8d5055908db1a8ed29c5ab9e650116a419c209","version":12},{"created_at":"2026-06-10T23:09:51Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3d5275cf4952ee7676f7c5cb8d9f3c71eb78f5d4b545b759a1e7dd117199ddbf","version":7}]}