{"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-d8g4ob09","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81784771→quote22367202 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"19e7c16fbfea142622e6c3ee97338ad560de2188b2dacf90f6c5e42c8045ab6e","version":22},{"created_at":"2026-06-10T22:00:29Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"5824413f38d63ff06e727e3837d45bee251e5830fd992d9f9693561f76ac6363","version":16},{"created_at":"2026-06-10T13:32:43Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"7c01220652869f6e2bde9f1ccc88cb06e904606c94111f2334c1991198061287","version":7},{"created_at":"2026-06-10T12:16:02Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"9948669e6451734f69a1065dabdda019c4ebd37c9d3b2bf4ca29d7ac67645b4f","version":3}]}