{"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-2gpwrytd","versions":[{"created_at":"2026-06-10T23:35:20Z","element_count":85,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy102533759→quote21288702 (旧polishコード再書き込みの再是正・rollback=m5:legacy_fix_rollback.jsonl phase=polish_recontam)","saved_by":"mcp","sha256":"70975b19f2219420cd1021a5a17ddc733f64fc3451b7f19d9fe31dbccfee9e12","version":12},{"created_at":"2026-06-10T23:08:24Z","element_count":74,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"1fef40f584879209cb3ce117b836502658cdc7b58e2a00b5e65b448d24cd2d54","version":9},{"created_at":"2026-06-10T23:07:22Z","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":"f1ef844912b4b69c6c0039c4633d0812784343d69b94e39ea3015553faeebb8c","version":8}]}