{"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-p5ctdn3e","versions":[{"created_at":"2026-06-10T23:35:30Z","element_count":77,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy73729440→quote22616301 (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":"845acf91a317b0d4f613da073039432dee21a297df5f743e57ff06174b8d3f70","version":11},{"created_at":"2026-06-10T23:08:09Z","element_count":84,"note":"5軸GA polish 52->97 by M5 (autonomous)","saved_by":"mcp","sha256":"a62eb2da79640b8e63fc6ffe8441f42e072f42a6cc11e051a8e41fe2ae75151a","version":8},{"created_at":"2026-06-10T23:07:36Z","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":"d1afc65d95d19592b696667c2f26609b496354faf3ad56f2f12f545cfa8e1094","version":7}]}