{"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-p0ypo04q","versions":[{"created_at":"2026-06-10T22:58:51Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy55439020→quote21331732 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"fd45629078bea1d1a5bb355785b3f2f4a8e3c2459b1f84c988e0bc776a988f16","version":9},{"created_at":"2026-06-10T20:22:38Z","element_count":88,"note":"5軸GA polish 60->94 by M5 (autonomous)","saved_by":"mcp","sha256":"5bde62d603bd08e087ec06a5c4e0cafa2e580660a9dadbbc9e27481680a4436b","version":2}]}