{"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-3ir7sp9y","versions":[{"created_at":"2026-06-04T05:52:13Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 96.7→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":"754ae21be105bd868d47c96215a7689c38c7391eceada39b41260a53b51706ed","version":10},{"created_at":"2026-06-04T04:58:03Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 45.4→96.7 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 96.7 (美 94 環 100 楽 100))","saved_by":"editor","sha256":"0c2aa5833ce310c0a384a2846dc29dcd47b18d848b65053824c75b5d7ca52029","version":9},{"created_at":"2026-06-04T04:58:03Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0b603ffc656f5e20161d4be3c658d25c24090c0baf7527124b3a96a7810b60be","version":8}]}