{"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-hj8sqeoe","versions":[{"created_at":"2026-06-10T22:52:23Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote23314543 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"89ec6e6b1527a018b38c48a270692357e91c4ca6f22903ac91f8c7a058f374d0","version":23},{"created_at":"2026-06-10T13:29:25Z","element_count":65,"note":"backfill: 延床=居室床スラブ実面積106.2㎡(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":"ba935d0e49fe0468340497b0a5ceab86a1a84ec3ded1e75f7a68cf4b3565dc71","version":9},{"created_at":"2026-06-10T11:43:43Z","element_count":73,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"82c66b023134f6cac07c3098cfbdee1b3ee3002fa2c7070d44896dea93c3714f","version":4}]}