{"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-tjs0gg3e","versions":[{"created_at":"2026-06-10T22:50:21Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21039553 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2fe4eb1d8667456d175732acf1402da148c2fd6da3abed35f7e167ab603a9a19","version":25},{"created_at":"2026-06-10T13:08:42Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.7㎡(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":"36e68d6f412e75e3535e685c12350bd3c4996437f0fb0bacecb612b8c4ef8856","version":11},{"created_at":"2026-06-10T07:42:34Z","element_count":89,"note":"5軸GA polish 46->98 by M5 (autonomous)","saved_by":"mcp","sha256":"12bbe0d0a3bebc27b6683bc32b973a9b16224e64241361c4777023b1304018fe","version":2}]}