{"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-dgrti75x","versions":[{"created_at":"2026-06-10T22:58:13Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy63545472→quote24936019 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"25761bda95e7c98496982d74f1311f9250e10c34d9833dc3e2ead18bb0fbf525","version":9},{"created_at":"2026-06-10T19:51:05Z","element_count":72,"note":"5軸GA polish 58->92 by M5 (autonomous)","saved_by":"mcp","sha256":"89f0e1a675d4e83b4770532984750a7225e69aaf69b8a7e09a822ff5743460c1","version":2}]}