{"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-7nytuap7","versions":[{"created_at":"2026-06-10T22:49:40Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21450603 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5f1283d6709c0c4a54e3be1cab06b97cb7d282b3d1b4f34fd2ef4319b647a4de","version":25},{"created_at":"2026-06-10T13:07:17Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(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":"7a71f4802e331ed2dab26f3bc1c5e74c33b24d95f85cae099759e4c611e2951d","version":11},{"created_at":"2026-06-10T07:25:35Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"df50209fb447878aff5f64499106d3c72301623af53131754c8048c031b22896","version":2}]}