{"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-s8ugt9t5","versions":[{"created_at":"2026-06-10T22:54:35Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote19293329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2e59f258cbeb5ca02e518350703b148c0aa5eee02afaa44197bbcb0ec7ed9607","version":10},{"created_at":"2026-06-10T17:39:49Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"84bf64d2870b77dc35e669bc563bf4219da12f8a2591a118b29ff43fb4133228","version":3}]}