{"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-13hdgvi7","versions":[{"created_at":"2026-06-04T05:50:21Z","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":"f6c288bd79640bf89d60c8087b357783ba23213150ba893daa369a73b8cd72ed","version":10},{"created_at":"2026-06-04T04:52:45Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 74.5→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":"bee9f818c67dafc82717a0d6cc63d0b9c8c3f67e1e53402081a16aaeca7f2717","version":9},{"created_at":"2026-06-04T04:52:45Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"9e35e6fd3fd3489a6f3a1993ef142ff3e8f48aebee4ff5858d8eadc8bced68de","version":8}]}