{"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-g3ldk-hfc0fen1","versions":[{"created_at":"2026-06-04T16:59:42Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.6->99.6)","saved_by":"editor","sha256":"7e6a84591ee1a87ea65a3aaa30dbdf6177ec71f70215a150d0b24150a7bf1f3d","version":5},{"created_at":"2026-06-04T05:55:08Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.5→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"5afe37274a69be72aa7afa93ffb8c0db08b6962029157358754aaca631eeac2f","version":4},{"created_at":"2026-06-04T04:55:59Z","element_count":69,"note":"GA batch-improve 2026-06-04: 総合 58.4→93.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"2ad94136ac605fecc6480c32bd90deb31bfbdc9525513c0780f97e85f8c18592","version":3},{"created_at":"2026-06-04T04:55:59Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"36f45e0050a35ad7085b1d4e7df529f61b0f19a4c7e6e0fb9024cd2fbbc07be2","version":2}]}