{"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-86h8nl6a","versions":[{"created_at":"2026-06-04T17:00:44Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.1->99.3)","saved_by":"editor","sha256":"abb57504b7a750fb791e4cf2b056161942ed0d047e5f9ba17a313f7eda26b67e","version":11},{"created_at":"2026-06-04T05:55:33Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.0→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"dfcb7886ad6c30e851a666e516e0ccb3edce494598efec18aeaed08995c0c485","version":10},{"created_at":"2026-06-04T04:59:09Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 38.2→93.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 93.0 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"729dd5aa329ed23939e415766884210ff8fcbc1962ed8fc2278751e43f7d1a21","version":9},{"created_at":"2026-06-04T04:59:09Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"46a1e471fb9b2b28a72adcfaf167185886155e188dbefda9a32b7f6f405dd208","version":8}]}