{"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-amz4e5dq","versions":[{"created_at":"2026-06-10T23:01:03Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20954809 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8143323800a6570b3517e3fabc4c8ac9b8e1dc38c1d6f6f26c12a54ca8a52948","version":9},{"created_at":"2026-06-10T22:00:45Z","element_count":70,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"072fb50126c0c136ad86718018162f593c8023ab5dc0997e771f0ea6ef999c4e","version":3}]}