{"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-2-4u6pjdbn","versions":[{"created_at":"2026-06-04T05:50:48Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"33f9b065d4443ab820ce75af670030700ffb26c120704c3d0d61aba8560669b6","version":10},{"created_at":"2026-06-04T04:57:34Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 46.7→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"385c51294dbc655d256a10efc4fe80200d9f190ad3dc9bafcdf8e159e1f1950c","version":9},{"created_at":"2026-06-04T04:57:34Z","element_count":40,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"659e3164e7ee5e668abed112c5a65e84d25cb3ad4ac4b4e9f590394e853622c3","version":8}]}