{"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-g5-gwe322mb","versions":[{"created_at":"2026-06-04T05:51:50Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.5→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.5 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"26036e7222adc031f52604371e12801f3155e192d608389a66265072a5e7ca7f","version":4},{"created_at":"2026-06-04T04:54:32Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 66.0→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.5 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"b0cfbe3f63db0b98fae8a1969b25ba186a8453b4f2aa0dc8d60873ac2a137ec5","version":3},{"created_at":"2026-06-04T04:54:32Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"21f2d356c6f21f76b76e2611fc50d900a2b28a36e6b4b41c38ad35bc4cbfe0ac","version":2}]}