{"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-eu11fgci","versions":[{"created_at":"2026-06-13T16:29:25Z","element_count":83,"note":"5軸GA polish 45->96 by M5 (autonomous)","saved_by":"mcp","sha256":"1351663d807e624de056d4b04eecbfa3f14e199b9e4a9dc67ac14ce4068da8a1","version":3},{"created_at":"2026-06-13T16:20:34Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"6e70b1940e0a093c209bb81a2ca5d6461040bc38794227ef9e2a8a0aa5d78238","version":2},{"created_at":"2026-06-13T16:20:34Z","element_count":105,"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}]}