{"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-3kiwlr0x","versions":[{"created_at":"2026-06-04T05:50:11Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→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":"127798cf3bdc5019c18e1399101cf3a5857492d5857a88a6ced6339741b90358","version":10},{"created_at":"2026-06-04T04:55:13Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 62.6→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":"b0d014f05184b39d584bcf85bc6c33cb386a69a820d5e92a3ba4efbc411feca9","version":9},{"created_at":"2026-06-04T04:55:13Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"ff57d1d69f06a9f56b00c36793896f36bba04ec98b941176d1fffe65a13aa879","version":8}]}