{"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-eokz91hn","versions":[{"created_at":"2026-06-11T00:14:48Z","element_count":72,"note":"5軸GA polish 57->95 by M5 (autonomous)","saved_by":"mcp","sha256":"5df5c0cc4938c036fca96bd4119e13e3c1f0ef1ccaa5e223ca638848fad194b7","version":13},{"created_at":"2026-06-10T23:10:03Z","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":"89877eb6f287f41a83e4794a1a62dddbce106034d2cf32c38ec14d2b55ec15f7","version":7}]}