{"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-g1-m62abd5w","versions":[{"created_at":"2026-06-04T17:01:20Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.1->99.3)","saved_by":"editor","sha256":"a0191a3fa88bd875b710928c8eeae098070d6f2a7ae823796262ee90d409a7de","version":5},{"created_at":"2026-06-04T05:53:44Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.1→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":"5bc1a19d858429fe9e9b1b344766bb834b4df5478f4aa9cdd1a2926588ad2536","version":4},{"created_at":"2026-06-04T04:58:56Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 38.8→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":"088e37740e499f57dfd13cdc1dea9c1fa1dfb48c939a17c52d77630350490f4a","version":3},{"created_at":"2026-06-04T04:58:56Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"4960a69f6e6b1b8f6eba9972b91ebbb6ebc5bceb575fa5944d12bef41790acb1","version":2}]}