{"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-house-dsebof2p","versions":[{"created_at":"2026-06-23T06:08:27Z","element_count":74,"note":"5軸GA polish 42->93 by M5 (autonomous)","saved_by":"mcp","sha256":"e817ce72ef93deb664013bf93dcb1f4e932047e625ed8f4ecb71081c970bacb9","version":3},{"created_at":"2026-06-23T06:04:01Z","element_count":85,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"5a951321f274a7907ce05a4a78a93a0a48f9d9ae8778ab0d72b0282285e56987","version":2},{"created_at":"2026-06-23T06:04:01Z","element_count":85,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}