{"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-lightmakerscottage-udkmbdut","versions":[{"created_at":"2026-07-02T19:55:06Z","element_count":85,"note":"5軸GA polish 38->92 by M5 (autonomous)","saved_by":"mcp","sha256":"69fa25423cdc9b1fc01fbba0d556d86d222d88bb157d6fc391a45d87c8d73c63","version":3},{"created_at":"2026-07-02T19:48:58Z","element_count":101,"note":"loop3: 設計時延床 48.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"9eb0cf23386796f3dea95f79a6e3e8f24a3df180acc9d4e61d3890e1eaa70361","version":2},{"created_at":"2026-07-02T19:48:58Z","element_count":101,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}