{"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-highgateshepherdsclo-abs8vv5v","versions":[{"created_at":"2026-07-03T20:15:45Z","element_count":82,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"221d3dedde8b721edf0dbf5aa5a04934e90b8517530868803f226b4a14f61429","version":3},{"created_at":"2026-07-03T20:10:15Z","element_count":83,"note":"loop3: 設計時延床 65.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"f5831ef0d9e8c4b42d9b83795a1e2038ed05a2adffec2427b36e23ec185a389d","version":2},{"created_at":"2026-07-03T20:10:15Z","element_count":83,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}