pub fn materialize(
catalog: &MdCatalog,
product_meta: &ProductMeta,
user_overrides: &OverrideFile,
) -> (Vec<BuiltinProviderEntry>, BTreeMap<String, Vec<BuiltinModelEntry>>)Expand description
Convert a MdCatalog into oxicode’s internal provider + model entries.
Applies product-meta extra headers and user overrides (Layer 2) after the base conversion.
Returns (providers, models) sorted by provider id.