{"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-oy3f4zgs","versions":[{"created_at":"2026-06-10T22:55:07Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote22600161 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"39d4b2eeced980e4e26fb21d1452a7e26fd820f6b226b81cf4b4c9e24b701b98","version":11},{"created_at":"2026-06-10T22:01:42Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"989f52615993acee263d39043971d00bb7c974dde0bfb50028dde5beb58eb4e3","version":5},{"created_at":"2026-06-10T17:56:20Z","element_count":90,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"12bd83de93f7fcba9b4f6d987a8155adb94543a6de3eb3c9b4cddeca69dff7a3","version":3}]}