{"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-6cw7u5kp","versions":[{"created_at":"2026-06-10T22:52:29Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy63326340→quote24269040 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e4a25709cb8c1e0ac340c141401667d71610575459171d5831225918f30b51f6","version":22},{"created_at":"2026-06-10T22:01:10Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"8e8451752c9dea70cb6cc76175c78ba2f32da3562c060566f26904397b388fef","version":16},{"created_at":"2026-06-10T13:34:14Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"74b1c66b49525b35311ff9474e847654d59716a33ce0a88538f870a54e8cb5d2","version":8},{"created_at":"2026-06-10T12:31:45Z","element_count":90,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"8404e22194ab47ecdbecb259792a61c410d92c6a0fcab708a14974dc5ffb735b","version":4}]}