{"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-bermondseyplacebunga-nlksi38g","versions":[{"created_at":"2026-07-13T19:41:39Z","element_count":83,"note":"5軸GA polish 38->92 by M5 (autonomous)","saved_by":"mcp","sha256":"b2f356bccdcad3103db343e34be0af2c11fd5b748dc04d5a343c8f9ff2a51d03","version":3},{"created_at":"2026-07-13T19:30:26Z","element_count":119,"note":"loop3: 設計時延床 55.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"20483ecf6dfd451ffdd57defb48e7d129e750b0778fe71febe3dc5bf6f1eed45","version":2},{"created_at":"2026-07-13T19:30:26Z","element_count":119,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}