{"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-toq52x0o","versions":[{"created_at":"2026-06-10T22:52:34Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73729440→quote24581776 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"adf3351cf6446f38b63b8acdb5cddbcf56877afa2c156da06cb7ea6de7e3933f","version":19},{"created_at":"2026-06-10T13:45:05Z","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":"4114685168fb3ad8f16bb26e402357ee86e9b332be8185215f85b8efab8572bd","version":6},{"created_at":"2026-06-10T13:22:14Z","element_count":84,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"5d482f874be15ea5548cc1ae7d1ec3f8fa186523262e757d14f1aabd809656ca","version":3}]}