{"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-2-treyi1u9","versions":[{"created_at":"2026-06-04T05:49:31Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 100.0→100.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 100.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"7a64bf8e70e255188ef33909888a425d88f1fa389591c73718aa6009ed36cf22","version":10},{"created_at":"2026-06-04T04:57:08Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 48.2→100.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 100.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"36f36209500b79cbc7b3bf77c3118a7bd1efb2dfaae884bde3f48b9e36cc9b51","version":9},{"created_at":"2026-06-04T04:57:08Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3d1289760a041e1629b83e42363ce5cda2a124d7e7b69d5b9300d148b3a7f614","version":8}]}