{"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-woodberrydownlodgeho-88g73tvp","versions":[{"created_at":"2026-06-25T17:35:16Z","element_count":71,"note":"5軸GA polish 38->90 by M5 (autonomous)","saved_by":"mcp","sha256":"b42c7f2b4199e935ba3e8d5a125ef46db6f517183d20fbc0d3a2cad12f0484b1","version":3},{"created_at":"2026-06-25T17:33:42Z","element_count":119,"note":"loop3: 設計時延床 55.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"bcce91f81d33c6eef1813764130979726999963fd454bf3f4b47acca1216926c","version":2},{"created_at":"2026-06-25T17:33:42Z","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}]}