{"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-bermondseyplacehouse-8ian300i","versions":[{"created_at":"2026-07-07T03:12:47Z","element_count":72,"note":"5軸GA polish 39->90 by M5 (autonomous)","saved_by":"mcp","sha256":"b2f8165220f8cae4c1ebdebddefeef59242e194bdafeed89c007c664462e47a9","version":3},{"created_at":"2026-07-07T03:08:02Z","element_count":101,"note":"loop3: 設計時延床 66.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"f7549e14f5a0198bc06aa0a573bedfe1be57be73fefa49fdb72e0df7a019a7a1","version":2},{"created_at":"2026-07-07T03:08:02Z","element_count":101,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}