{"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-gamfcx0d","versions":[{"created_at":"2026-07-01T06:56:34Z","element_count":83,"note":"5軸GA polish 45->96 by M5 (autonomous)","saved_by":"mcp","sha256":"dbeb2e07d18515f6cff1c491c36fd8d495fa17003f20feb383393ea0cc7a03e5","version":3},{"created_at":"2026-07-01T06:41:29Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"9e04372e2410a989f6e16d1b2497c7f0b29c61c7a7482cb13ef63ed774cacb9d","version":2},{"created_at":"2026-07-01T06:41:29Z","element_count":87,"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}]}