{"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-mw69doz8","versions":[{"created_at":"2026-07-17T14:00:03Z","element_count":71,"note":"5軸GA polish 47->96 by M5 (autonomous)","saved_by":"mcp","sha256":"38e65cafcf7d1a6402055c5745621b21c4744509328055d7169601c9d15ef1d2","version":3},{"created_at":"2026-07-17T13:55:49Z","element_count":107,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"06afb439167e3972f7a9bf956d8c94d73497a9d235f0875a041a0d109ca0de64","version":2},{"created_at":"2026-07-17T13:55:49Z","element_count":107,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}