{"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-qg23jf96","versions":[{"created_at":"2026-06-11T00:14:28Z","element_count":89,"note":"5軸GA polish 57->98 by M5 (autonomous)","saved_by":"mcp","sha256":"94d85ba9e573fba135044868d5ddfd954582ca455890b2b83a5a13b65035dc95","version":13},{"created_at":"2026-06-10T23:09:55Z","element_count":54,"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":"25fe7df9c027656ee1060422879c53937c651e4b0fff3a4e537c3dba0a3b5ebc","version":7}]}