{"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-wbruib0v","versions":[{"created_at":"2026-06-10T22:52:08Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote19740953 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3fcc1085fdec23d8e5b168320b0f8f7f45a7f1762e79c4f5decfefe14470bdb0","version":25},{"created_at":"2026-06-10T13:13:53Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"d0e7500d0db456f72797132275e86e2fbaba136fc20c40270faa7b42474b19e4","version":10},{"created_at":"2026-06-10T09:05:35Z","element_count":74,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"d2e886009c22e3827621eebcc04b74f7cb62b7ec500d64dbc075e771540fff0a","version":2}]}