{"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-woodberrydownhouse-vbxr0kiz","versions":[{"created_at":"2026-07-07T03:12:47Z","element_count":89,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"e9e5a50fa3aad3df479cde52cb09f934eae05e3961e865706a02ae083a7b1261","version":3},{"created_at":"2026-07-07T03:07:04Z","element_count":119,"note":"loop3: 設計時延床 70.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"b2889f5cc8a3218afa0080b72793d48952aa1bbbcae660d30e194a4707f4e4ba","version":2},{"created_at":"2026-07-07T03:07:03Z","element_count":119,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}