{"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-8w8nles3","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote22379006 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"935f3e5be9465775539dbbf2611a1899fe2be2bae8507a4b11539aa6ecfcbf03","version":13},{"created_at":"2026-06-10T15:19:06Z","element_count":72,"note":"5軸GA polish 56->95 by M5 (autonomous)","saved_by":"mcp","sha256":"76e520e3f2bd886942e5e5a166a950e4be6cc44eeb412c26645cfd445e4188fa","version":5}]}