{"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-5ido0zgk","versions":[{"created_at":"2026-06-10T23:23:56Z","element_count":73,"note":"5軸GA polish 50->95 by M5 (autonomous)","saved_by":"mcp","sha256":"d85e647e5cde4be42ed7ef0049ef5f6117df61328e1695404ca3ea1a4260934d","version":10},{"created_at":"2026-06-10T23:08:22Z","element_count":44,"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":"8b9cc2e797d99d8e1419f3719384004fb2ef44770838058ff6785855b4222f05","version":7}]}