{"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-jtl2xyxd","versions":[{"created_at":"2026-06-10T22:52:10Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote21003363 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"955b7421e0fbbc98968016ecd107641fc03f5f81941ad62a8e9d9d297c01beb5","version":25},{"created_at":"2026-06-10T13:15:26Z","element_count":63,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"fa39115b0d79ce4a1d6b5cf2968a683d4957bac28ac5082bc7b535b7c8b0e9d6","version":10},{"created_at":"2026-06-10T09:37:47Z","element_count":92,"note":"5軸GA polish 53->98 by M5 (autonomous)","saved_by":"mcp","sha256":"645ab28fa5754234a204531a319a1261802ffbace7d30713f1b84d94fdd24fcd","version":2}]}