{"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-g4-g77i426u","versions":[{"created_at":"2026-06-04T17:01:38Z","element_count":63,"note":"polish: batch-improve-100 2026-06-04 (92.4->100.0)","saved_by":"editor","sha256":"cf4421b9fffeb3dcba8a8bb7721e29194b9886ea88f1f105b0b60805a8f3fe0a","version":5},{"created_at":"2026-06-04T05:54:44Z","element_count":55,"note":"GA diverse re-design 2026-06-04: 総合 93.6→92.4 (総2階(箱)・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 92.4 (美 95 環 100 楽 91))","saved_by":"editor","sha256":"b2d17584b79816bb0298de4c419f0f13e7362cfff17812c911b849c310b5f7a0","version":4},{"created_at":"2026-06-04T04:59:02Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 38.6→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 93.6 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"7c100ed24a046d0655102e3b25ee99953b2300c6e8995743f104c1c9cbc244ee","version":3},{"created_at":"2026-06-04T04:59:02Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"9d3934934b819e51abef3c02b6ee977a1b843f4a54ddb5585a82dfba434106ba","version":2}]}