{"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-8oqqqf7n","versions":[{"created_at":"2026-07-13T09:38:57Z","element_count":85,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"9521674fc2dad82bc641c772cb77be20f3d0621a690e1a769a76a7c86f6e6b7c","version":3},{"created_at":"2026-07-13T09:24:06Z","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":"053aa9f9f86fda7c00d1cbf08cb89b4598eeecbd273de9dc6fc0ad695ce45dfe","version":2},{"created_at":"2026-07-13T09:24:04Z","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}]}