{"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-rc-zq1tjvmc","versions":[{"created_at":"2026-06-04T05:50:09Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"23da4b0c83d05bcbe91c50d944cfc7407cd1d4464024750656d53ff52d937e7b","version":4},{"created_at":"2026-06-04T04:56:56Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 49.2→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"e5c3ad25e74edc4dacaef83dc48201e70507417dab5b383ac174d3c9c86c5778","version":3},{"created_at":"2026-06-04T04:56:56Z","element_count":93,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"448b7b688734164e58bafa6e6038b0af8d3edf0334e62c792cba510006645c03","version":2}]}