{"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-theheightshouse-uxvftz55","versions":[{"created_at":"2026-06-24T08:46:26Z","element_count":72,"note":"5軸GA polish 39->90 by M5 (autonomous)","saved_by":"mcp","sha256":"c2959da832fa4e71b6672212a77ba486db6cdcca862aaed51929842efe78ed24","version":3},{"created_at":"2026-06-24T08:39:34Z","element_count":86,"note":"loop3: 設計時延床 65.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"24eb4a396a5e0d59027bec81f3fd7739417e4fe786ab5251f9d0b8286a6b494e","version":2},{"created_at":"2026-06-24T08:39:34Z","element_count":86,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}