{"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-95wtffon","versions":[{"created_at":"2026-06-10T22:52:18Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote19626413 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9421977eaf18c399074520965b29de512e5ea1d83b7a82c91de27dc96335f297","version":25},{"created_at":"2026-06-10T13:23:43Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.3㎡(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":"fda8e0844e872ee07a1763d9bb656605fd2752f99a1b6786c582806b2ca1ef71","version":10},{"created_at":"2026-06-10T10:53:14Z","element_count":85,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"74ed936b1d60f134f3ecc4aaeed5086614a1cb5ef43395bd6b3c5255fdd30190","version":3}]}