{"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-8wuxuwe6","versions":[{"created_at":"2026-06-21T05:55:55Z","element_count":101,"note":"revert: GA design failed production houki (M5)","saved_by":"mcp","sha256":"0eece098e1c087b373c9a7df386d486660fb29401feacbf52224b504f3473933","version":4},{"created_at":"2026-06-21T05:55:52Z","element_count":72,"note":"5軸GA polish 38->90 by M5 (autonomous)","saved_by":"mcp","sha256":"6e1ba9a8cf4b34ca133cb77d8ec03652d573426c513a01439137ee3d17c5c523","version":3},{"created_at":"2026-06-21T05:50:52Z","element_count":101,"note":"loop3: 設計時延床 45.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"01008dd0855b5c5e3f0953ecbdef8dd9cf45e5b92eaa08f13dac1bd09c4fb76f","version":2},{"created_at":"2026-06-21T05:50:50Z","element_count":101,"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}]}