{"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-ckwugcgq","versions":[{"created_at":"2026-06-11T00:14:54Z","element_count":85,"note":"5軸GA polish 58->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f8e855d8138e8caf29da1a081a4d3ac49290e9796e27da34d68cbc47e5791114","version":13},{"created_at":"2026-06-10T23:09:55Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"cf0815bc8c4c73300c4a9557086627b0b87e8c72522a67d958e353ed196b4caa","version":7}]}