{"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-hwgrjkw7","versions":[{"created_at":"2026-06-10T23:39:39Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0cef555fbb1fe6aa706bef1cf16cdef538166c0b20655db417bc672b103a0fd5","version":11},{"created_at":"2026-06-10T23:09:19Z","element_count":50,"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":"3bd2a5d2d9e4ec8dce6e3591f6fba45c14da18608718cbdb9bf8e73a0b59ae6c","version":7}]}