{"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-6e6gfdt4","versions":[{"created_at":"2026-06-04T17:01:21Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (93.8->99.0)","saved_by":"editor","sha256":"0351167424cab140f86be3c336c73890c35f60ad6dd55d979a7406448e949795","version":11},{"created_at":"2026-06-04T05:53:51Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.8→93.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"8cbe076a6728d95cec0fd1dc031fc9e9f29430a520a45ea850093122a73cef16","version":10},{"created_at":"2026-06-04T04:56:05Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 57.6→93.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"0291e69698970b4396dfb4f0eb440dcceb05f0b2e788785cff3e5407d41b4e18","version":9},{"created_at":"2026-06-04T04:56:05Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"d68efc4244c64c8bfef1ae9a9ac80efc5fbc26144114652f71570a930d5b3251","version":8}]}