{"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-p5aytonc","versions":[{"created_at":"2026-06-10T22:52:25Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote21115024 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a05944f5b485b99bb04993e990a5857b43c0856fe103943e3af3000e0ed41c45","version":22},{"created_at":"2026-06-10T13:31:06Z","element_count":63,"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":"78f9ba27842fe87ddddb186ffd8ba771d03beed9f96d31cce6ae24b2a80f2a7b","version":8},{"created_at":"2026-06-10T11:59:59Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"b9228c215609066997f831d4b9e364f4602daa32b8b7972873f52bad4d851caa","version":3}]}