{"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-4rifehoj","versions":[{"created_at":"2026-06-10T22:52:07Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote24966245 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5f1820f5381b7327b005d838cfa9a3b0df68789374a14175cc724ece8fa874f4","version":26},{"created_at":"2026-06-10T21:59:43Z","element_count":55,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"e5a2644d8631054d0b3cc505121209c2659cc250dbf174fd7c9e35e7abdb9a5e","version":20},{"created_at":"2026-06-10T13:13:25Z","element_count":62,"note":"backfill: 延床=居室床スラブ実面積118.8㎡(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":"81bd63c29560cfb62c478a526bb109716fa205d03875648096eaacf07f64954f","version":10},{"created_at":"2026-06-10T09:04:58Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"6ab6437d862e1c33143e11285898020a260f83f8bb03bf72931e47cfd48740b9","version":2}]}