{"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-tcr02gg2","versions":[{"created_at":"2026-06-04T05:50:08Z","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":"21a182b4d3ff48647b4f6cf24c84ff6e78bc8f013a9eba835138d01083084945","version":4},{"created_at":"2026-06-04T04:53:54Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 68.3→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":"62cff924c5b4b66c86570a8ac3c98c3a1e784ad15f4f90fa79766bc64707eebb","version":3},{"created_at":"2026-06-04T04:53:54Z","element_count":64,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"799c8da8e4952dcaf6d9e1543acf4f5d68a6f893735a500dbda280e239b528f4","version":2}]}