{"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-rawm54kv","versions":[{"created_at":"2026-06-10T23:56:32Z","element_count":83,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"b671ae303fa7d566122278e5732c7a3b19869841e34c2dd0e3248409e0752674","version":12},{"created_at":"2026-06-10T23:09:30Z","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":"0112e7cbf5ebb0edf69b12e653043362ca411eac4e693efde6e57db167d186a6","version":7}]}