{"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-0cgzlblg","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21473216 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"63e20a70c17b85a5c570b05ab9d5f5b46ab8db55a619f1c895b1403360e786ac","version":14},{"created_at":"2026-06-10T15:18:57Z","element_count":70,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a6a6002d07a5cdf5f0f3b83155f56511b0d746d370d5aa1a762f848a153b1c26","version":6}]}