{"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-6qihb7v1","versions":[{"created_at":"2026-07-06T19:43:36Z","element_count":72,"note":"5軸GA polish 44->96 by M5 (autonomous)","saved_by":"mcp","sha256":"ca971a8525550b1739e07edc0cb9e9984dbfd377d91bc6729c675fbec645a5eb","version":3},{"created_at":"2026-07-06T19:36:41Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"c2ad2ef5928f5b370be1e5cf3e5e1de6cd0d09a9d06c948d7c654faaafccda3e","version":2},{"created_at":"2026-07-06T19:36:41Z","element_count":105,"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}]}