{"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-1dcn0ijp","versions":[{"created_at":"2026-06-10T23:35:20Z","element_count":65,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy102533759→quote20904388 (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":"ed1b8e2d65d21defd31a3cdf3fe34b0b3cd64785673e14468fa8bd4e5f5fcf31","version":11},{"created_at":"2026-06-10T23:07:55Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"937c843dac87dfc36c0a13c69c1eb7cedcfd6af69fa2ff2bba1d19faeb3b0b49","version":8},{"created_at":"2026-06-10T23:07:25Z","element_count":46,"note":"legacy fix: rooms設備語除去 / jpy26330000→quote19430210 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"56902910d4f6867e1b17226e38c243c963f55aae116d71e403a1f9b80cd968af","version":7}]}