{"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-wfh2zayi","versions":[{"created_at":"2026-06-10T22:52:28Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20577203 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5189b9c0e9a97da6d48dd875f8aae37e9169bc7b3fa789fbf248699b951eae19","version":21},{"created_at":"2026-06-10T13:33:14Z","element_count":63,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(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":"f095ceacd7dc997f28787681bbe7f66b519d24bf1c9fa77cdb66b19a3979c1f0","version":7},{"created_at":"2026-06-10T12:31:47Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"c135545c7de90640e227a39a2b1939684538d6aa0ef05e8d4c3753679f0ea18a","version":4}]}