{"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-ojnp0hib","versions":[{"created_at":"2026-06-19T06:02:25Z","element_count":74,"note":"5軸GA polish 43->93 by M5 (autonomous)","saved_by":"mcp","sha256":"ca0109f5cf4e3049d933decb1ddfc32b96897f31117860b6f1acdbe59f17cc13","version":3},{"created_at":"2026-06-19T05:51:15Z","element_count":88,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"39ad764211f937a73ed5c1f9747c591963763f0d3993692c35d7e633b148862e","version":2},{"created_at":"2026-06-19T05:51:13Z","element_count":88,"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}]}