{"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-g4-mb4ygpgl","versions":[{"created_at":"2026-06-04T05:55:53Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 92.2→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":"74bcb390c348f102b32f493ab2ef02be1fed93edb707080ee233fcad5c179dfa","version":4},{"created_at":"2026-06-04T04:57:34Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 46.6→92.2 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 92.2 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"c5ea7a68ae62c3ea7139ad0e48300345698603eb4652d18314bdd6e03003514d","version":3},{"created_at":"2026-06-04T04:57:34Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"8d717a40a19ae4078383aaf4082e9153087a0b8d427e9607ade72b608412a78a","version":2}]}