{"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-an2lagsr","versions":[{"created_at":"2026-06-10T22:55:21Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20863604 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5331bc362a567d1ea37890987df2f6f1b044259b2e1d2fcc2f0b361ace958f21","version":10},{"created_at":"2026-06-10T18:13:48Z","element_count":84,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"39107dec546e01257e2fbb88b5ae3ee8d15bfc125aa4ce1df5bfb0e943c120c5","version":3}]}