{
 "schema_version": "1.0",
 "dataset_id": "data_material_surcharge_manifest",
 "generated_at": "2026-09-07T00:00:00+09:00",
 "built_by": "수작업 — 산림품셈 1-3-1 전사 + 건설품셈 1-3-1 대조(2026-09-07)",
 "files": [
  {
   "file": "material_surcharge_2026-01-01.json",
   "sha256": "d9a66bbadec54fa384ce9f04d0ff7081c1896bae606a059f06a742416570aac6",
   "size_bytes": 4752
  }
 ]
}