{"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-8fomapms","versions":[{"created_at":"2026-06-10T22:59:57Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81784771→quote22615183 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a8d1cc6117796d9fa8920de9ee530fa08be030a76b1a044e7717031c2c8c9cc1","version":9},{"created_at":"2026-06-10T20:54:40Z","element_count":84,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"207c932b46961a793468074970cda71b5c7bfba6f1cbef75fc3bf848faa3a3be","version":3}]}