{"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-oqk3agkz","versions":[{"created_at":"2026-06-10T22:52:32Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21159829 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"175b3d4a152cbe2a8b7b323c89b90b22811d34a42c2eb602bcfe79fb8754ea05","version":19},{"created_at":"2026-06-10T13:05:13Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"c9e034cc102a25dedc9c01eac61e848237247cd9c4f315bf2962484cc965e031","version":4}]}