{"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-2-054t93fc","versions":[{"created_at":"2026-06-04T17:00:36Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.6->99.6)","saved_by":"editor","sha256":"80242e2d0d7aacc18c78fa7f2ea27b86325127f1ce6681fb2bc60c59f2f3ca6d","version":11},{"created_at":"2026-06-04T05:53:07Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"f97e34bc5b0db354c4d51c3397e6fce50befcafac8b05f8ee9074f71d09fa6a4","version":10},{"created_at":"2026-06-04T04:56:00Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 58.3→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"419b3fe4c9ac0f12020340dc0ef01dc938f070f2591545db43d18eb269bb9258","version":9},{"created_at":"2026-06-04T04:56:00Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"301c975e699047aaf2058eccd224f80a6fde860bc3680e46946887e0f765e51e","version":8}]}