{"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-theoldmillhouse-bpfcdqsz","versions":[{"created_at":"2026-07-13T10:49:13Z","element_count":85,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"1584f5a38c1a22e8cd83cdfbef645d1c6bc28a8e7d24ee0d87707f6a676e09b2","version":3},{"created_at":"2026-07-13T10:36:39Z","element_count":107,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1d0d56e945d48aadc2888d6dca2e4bfc095a7ece0d7d810f939d4a634826c363","version":2},{"created_at":"2026-07-13T10:36:38Z","element_count":107,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}