{"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-2-69ghwrhx","versions":[{"created_at":"2026-06-04T17:00:20Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.6->99.1)","saved_by":"editor","sha256":"e7d388323c722fed68dc211966b872a47378757606370ffb4902be5aca5da925","version":11},{"created_at":"2026-06-04T05:53:03Z","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":"2026-06-04T04:53:44Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 69.0→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":"db8f966ecd93bba6af2622228db95e621a4d3e199f90ebf56b91b4c06a80327a","version":9},{"created_at":"2026-06-04T04:53:44Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"f7044b4848e498664315d0c0fe569a6b96ef25ca4819700d51866e2aa36f6e6e","version":8}]}