{"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-sgvp7j76","versions":[{"created_at":"2026-06-10T22:52:13Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote21304953 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8eb214d9f53a31163f08eb1b0a66bf7120c1f4833e3a2eb9f936182d0e38ef6e","version":25},{"created_at":"2026-06-10T13:18:10Z","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":"5ee57a390d5f7e83f6eb91fc4c782b0fab2f17be1ed4bbf47e9c99a24b94468f","version":10},{"created_at":"2026-06-10T09:53:58Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"819c7c20c0ddca86034f39041e423846d8b459b468f36d3d2d96d57447fc12bb","version":2}]}