{"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-ed9wn1gh","versions":[{"created_at":"2026-06-04T05:52:17Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 95.9→98.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.1 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"3ac62fd955064969929f7f7884ee970d4eab026ec9d56954ae32c13256974f62","version":10},{"created_at":"2026-06-04T04:55:37Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 60.5→95.9 (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 95.9 (美 93 環 98 楽 100))","saved_by":"editor","sha256":"65d68fe2e3f1ecf461fdf2d60fc25e9a4e20620d4d19d8e31c7aa68ffb453a65","version":9},{"created_at":"2026-06-04T04:55:37Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"4a933c67e2f03a3e947e115fdad0b8e4613b4ed2e92d06c4d3f4bb74784743dc","version":8}]}