{"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-2oqfn7yx","versions":[{"created_at":"2026-06-10T22:52:20Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73729440→quote24966245 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"86770d4d602eca36d488c46474cdf1e66f18b88b2db975b193355c55e6f2c33a","version":26},{"created_at":"2026-06-10T22:00:54Z","element_count":44,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"2e3e55b8e7d91f7b4df4db84359c5ba422585c2dae3429124bd46082c3f545f1","version":20},{"created_at":"2026-06-10T13:25:33Z","element_count":63,"note":"backfill: 延床=居室床スラブ実面積118.8㎡(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":"cc38685c5225839bd7447112305e831af6ba576ab1865d3ce6dd993b7022f9ee","version":11},{"created_at":"2026-06-10T11:10:01Z","element_count":84,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"550f76341095cae82d2aca5572b1d3f83004e099840383504c6f481ea8bab6cb","version":4}]}