{"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-6sk6ymli","versions":[{"created_at":"2026-06-11T00:14:22Z","element_count":72,"note":"5軸GA polish 57->95 by M5 (autonomous)","saved_by":"mcp","sha256":"7c14ec9cd34757025b56271f38c21db6476d2119d6b73239a119f55f7e250740","version":13},{"created_at":"2026-06-10T23:10:05Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"fe2592c2f3a2ab44af5a95b0a635b913ff55590cb3234224372d9dd609e4b2a6","version":7}]}