{"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-capitalcrescentbunga-oqo0wi5a","versions":[{"created_at":"2026-07-16T15:57:27Z","element_count":88,"note":"5軸GA polish 38->92 by M5 (autonomous)","saved_by":"mcp","sha256":"9f1f88de0c7fc41e5dc7e7535b2ebdcc6ba95e9088a0dd58acc2564a59a3b206","version":3},{"created_at":"2026-07-16T15:49:23Z","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":"62dc5efb3e011d42541c20d0b70c948992672a03ff921aca712f1e1a4d43df3d","version":2},{"created_at":"2026-07-16T15:49:23Z","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}]}