{"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-2-pkbmd0wy","versions":[{"created_at":"2026-06-04T17:01:21Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (93.5->98.3)","saved_by":"editor","sha256":"ab12e61ca6526122272ca04c56530334fdbdb99a9a8aa14b407fae60c5df0ad8","version":11},{"created_at":"2026-06-04T05:55:11Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.5→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"7177ecaabecc92e5737624d080931e698ec52e1741fe282d671e272593ea296b","version":10},{"created_at":"2026-06-04T04:52:45Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 74.6→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"557443a1635cb05c3d3c5821a2846de04681db4232d5e2970f7e67c76fd2f76a","version":9},{"created_at":"2026-06-04T04:52:45Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"16effa4791c48487a7a5bfa42a4490f0647a653a3c2e5429496807743df39357","version":8}]}