{"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-f30jatyv","versions":[{"created_at":"2026-06-10T23:39:37Z","element_count":72,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"5dada6cd91279d3261a62c525d407ca245b52860a3858d340aaf4e4bca3bce53","version":11},{"created_at":"2026-06-10T23:08:41Z","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":"3afdde75ba72ee0d56910e1c7ef06a7e971c0fd14943e40fedcff748b9336053","version":7}]}