{"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-76y806l7","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote22947594 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"57879f9cba1143034780f561b3ae6d4be6639796c055bec5551c6a1644f5d203","version":21},{"created_at":"2026-06-10T13:32:41Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積97.8㎡(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":"626cbf6e0ca0d68f9a481948e554694ddb98eccc3c0af95bb639e70656803844","version":7},{"created_at":"2026-06-10T12:16:04Z","element_count":69,"note":"5軸GA polish 61->95 by M5 (autonomous)","saved_by":"mcp","sha256":"2f362b578e12fad83aa1cea9bf5d9b1017e59b735c3c1a6e9a8289b7e9ab075d","version":3}]}