{"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-jum37vft","versions":[{"created_at":"2026-06-10T23:07:06Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote20065976 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c3ab124dba0f12e9f9a3658941a949b41ec03b5a23b4e9df1e1aaf2d6e7952ac","version":9},{"created_at":"2026-06-10T22:51:10Z","element_count":84,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"fa1b91609390f9af84e0d311b440e3d21ed0bcfb8ec89c1ca75deb83550c2775","version":7}]}