{"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-g4-6vr04zxq","versions":[{"created_at":"2026-06-04T05:55:32Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.0→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"a1a69beb4b097db1a6951aacbb433b53b3ca1164484e64be916dda3a293c9bca","version":4},{"created_at":"2026-06-04T04:59:14Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 37.7→93.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 93.0 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"ab405d3f15a64bfc707edca865934f416ed9863b4f7946b5e03ec8cb98122e17","version":3},{"created_at":"2026-06-04T04:59:14Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5c8b1718150174006a19e050bab1e8b60b45b805ee1ff79c2fcdda0933b544fe","version":2}]}