{"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-sy3opntt","versions":[{"created_at":"2026-06-04T05:52:53Z","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":"c8f649aa11326936fb49b2c9085ca0066659eadc865e44c00de3ad43855bc49a","version":10},{"created_at":"2026-06-04T04:59:10Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 38.1→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":"374cb2c0548b6db2527ad58220aadc752f1514f509c9da74f100cf7efed94899","version":9},{"created_at":"2026-06-04T04:59:10Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"9d3934934b819e51abef3c02b6ee977a1b843f4a54ddb5585a82dfba434106ba","version":8}]}