{"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-house-xdpa65c5","versions":[{"created_at":"2026-06-04T05:51:20Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.6→98.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"531e1e4c25c731da7f18c31f1e0100a27f1f5218d32a3a55786638d50e1dae1e","version":10},{"created_at":"2026-06-04T04:55:29Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 61.2→98.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"fe16faeba4432dcad28ff0781f654c013710cb27ac0cb0b1dc82a06c38030bbc","version":9},{"created_at":"2026-06-04T04:55:29Z","element_count":29,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1eea512a1b373c3bae57c123a842a8d0c06b55b6d46932a05a86e2dad14f9083","version":8}]}