{"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-tdzo7cmd","versions":[{"created_at":"2026-06-10T22:52:33Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote19626413 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c8b5624175747e3fd822f826bb5c7de7099c39894077f8507332129c90031e48","version":20},{"created_at":"2026-06-10T13:44:22Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.3㎡(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":"fda8e0844e872ee07a1763d9bb656605fd2752f99a1b6786c582806b2ca1ef71","version":7},{"created_at":"2026-06-10T13:22:10Z","element_count":84,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"985b6fcd81c1ff6ee0fa63f6dd9f29eaf17f384681bafa03973718228bd64b27","version":4}]}