{"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-henriettesgrovehouse-nyoore98","versions":[{"created_at":"2026-07-15T20:21:55Z","element_count":72,"note":"5軸GA polish 46->97 by M5 (autonomous)","saved_by":"mcp","sha256":"65124aae5b92f7bb62e65ed58545352254443265daa84e4055de658c6c3585f6","version":3},{"created_at":"2026-07-15T20:15:01Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8a8cd821f110263575924c69220c37d89d31de1d2f595c9d6e1b7393164d2c01","version":2},{"created_at":"2026-07-15T20:15:01Z","element_count":105,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}