{"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-woodberrydowncottage-axjusjvq","versions":[{"created_at":"2026-07-16T09:51:06Z","element_count":70,"note":"5軸GA polish 40->91 by M5 (autonomous)","saved_by":"mcp","sha256":"2a18bdc59bd53085eff4de50d7a9fd6e8cf6d6f143c6a47488455252306ede11","version":3},{"created_at":"2026-07-16T09:38:09Z","element_count":86,"note":"loop3: 設計時延床 80.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"547e797b1a5978aab5d07e6c88779600953bdd7535da5636522ea1ab43ea231e","version":2},{"created_at":"2026-07-16T09:38:07Z","element_count":86,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}