{"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-ikj0v506","versions":[{"created_at":"2026-06-10T22:52:28Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote21003363 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0fee7a8a9d087b458667c63af10c19c2aa3c5acbba154027ca94ce153f207312","version":21},{"created_at":"2026-06-10T13:33:06Z","element_count":62,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"7b7f18b87c4d2a5ff496cc83b8eb84e440d6bf66ae47f04fa242bb0a0ef37555","version":7},{"created_at":"2026-06-10T12:31:46Z","element_count":72,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"ff587b7aa86510ed117552c30a347a86a07860ea2977e603f6b271458a0e0c17","version":4}]}