{"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-p0d41bde","versions":[{"created_at":"2026-06-11T00:14:52Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"4313e2fc1745c6ccd2509cb33642bc68e23e7eb4f6ae0c10012d9dcfe14da891","version":13},{"created_at":"2026-06-10T23:10:07Z","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":"4f73f5163093166d48f623c963f368fd3bf41f1fa49243ec948106a17ed0100e","version":7}]}