{"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-u1r22nv9","versions":[{"created_at":"2026-06-04T05:49:46Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"5473c06a5212f10e19405c6aa067aeed067bfe571f8bd7639a6de8c2b3f9530a","version":4},{"created_at":"2026-06-04T04:53:04Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 72.3→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"4aa4dee7ef2b3ba336bb82e39a0257a30c3101035c5c0f2e775335c277304b57","version":3},{"created_at":"2026-06-04T04:53:04Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0b352141b274d4398c5da1e02b0167ec88625c26b9c31059e066ee75a54d2b3f","version":2}]}