{"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-qvy4bi54","versions":[{"created_at":"2026-06-10T22:52:23Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20039150 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8a54bf6a20ea6d27b8bfff5a522624650c2f1b03252c0bd116f0bec8e8b9338a","version":23},{"created_at":"2026-06-10T13:29:23Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"28d69fe6ea73689d2523a349843f3a1b32867303bf5a19b1c0807d376572651a","version":9},{"created_at":"2026-06-10T11:43:36Z","element_count":85,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f88052bc0f242ca87c99b5040b5dbc96bb9130dff5c3abb3e6ba444c29b8d0fc","version":4}]}