{"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-ibndkyx6","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote21362937 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9eb13dbe3bbfb6a97f155233c01a0549c7366b9f81158aea764d7334cb4c1baa","version":21},{"created_at":"2026-06-10T13:32:21Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"98a194aeaf498b958603c17fa0719e363361d8ed11502fa338bd946d1765e24c","version":7},{"created_at":"2026-06-10T12:16:03Z","element_count":91,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f6431b23cd2dd38052c4004313f88b7673f2548b9b2f5ec896255d8cb85342f7","version":3}]}