{"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-qwqb0h7r","versions":[{"created_at":"2026-06-10T23:23:54Z","element_count":85,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"5b9948d7a244f113bf0e299647a2a5f466cc83161badadce66a378a2524c4640","version":10},{"created_at":"2026-06-10T23:08:16Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ce94f6fcc09f2d225730c2fca48a173c68e92861c4e9daccdcdb922f14380580","version":7}]}