{"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-aeb1fp88","versions":[{"created_at":"2026-06-10T22:52:36Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote18693989 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"cf5b67aa68f6600874f50fedd680c4c41fba0dd5480ec9424d3d32ceca334ee1","version":18},{"created_at":"2026-06-10T14:13:03Z","element_count":84,"note":"5軸GA polish 62->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d5308b8832abb1b8d35fc53bae1c578d82118e5d0683badd8f59cf35cb006add","version":7},{"created_at":"2026-06-10T13:47:22Z","element_count":50,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"033e8534a38ffe3c6135812e0201ce85ad82f0b43ae007aa6c51f822360788f6","version":4}]}