{"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-r1upy72e","versions":[{"created_at":"2026-07-03T06:27:35Z","element_count":90,"note":"5軸GA polish 42->95 by M5 (autonomous)","saved_by":"mcp","sha256":"cd210022b9cbcc5d8d7d82d919119bbaf0df68c713dbc94a77c53fb3154e0830","version":3},{"created_at":"2026-07-03T06:22:23Z","element_count":82,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1ba6bbbb6b9c8716c6efcb37e9517e7c5b4ed8e52db6f455d716bdc4ccf0a68f","version":2},{"created_at":"2026-07-03T06:22:23Z","element_count":82,"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}]}