{"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-65eqe8al","versions":[{"created_at":"2026-06-04T05:55:34Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.0→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d11ef4cc6d2805bcde0c0fbf1a2b9c282d97b5abb7cbb912d4f4dbe12259d719","version":10},{"created_at":"2026-06-04T04:59:23Z","element_count":71,"note":"GA batch-improve 2026-06-04: 総合 36.7→93.0 (中庭ロの字・吹抜 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":"4e79bb6e5ca1a7ed0c02d80935b8e9cd3cb46903a31e0b19665fd8880a6005b8","version":9},{"created_at":"2026-06-04T04:59:23Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"538a47ad58e7889a75fa4e791de94dfc86cfc489a92ad23b69241ffa8d11716d","version":8}]}