{"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-c4t8makr","versions":[{"created_at":"2026-06-10T22:57:25Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy66487392→quote20693313 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a534277fc02badf307100cdc35c1e4b38caaa7122b2640d92fd3060f5663e580","version":9},{"created_at":"2026-06-10T19:18:40Z","element_count":73,"note":"5軸GA polish 56->93 by M5 (autonomous)","saved_by":"mcp","sha256":"f1e241c450039f75dfb4579f2f1098f191b4db3843b48b7ef4bf5f807138b675","version":2}]}