Branded canonical invoice recipe using the Tiered Composition pattern.

Branding inputs are supplied through data.brand:

data = %{
  id: "INV-001",
  date: ~D[2026-01-15],
  items: [],
  brand: %{font_name: :brand_heading, logo_name: :company_logo}
}

font_name and logo_name must be atoms. Missing or invalid branding data raises ArgumentError instead of silently falling back to the unbranded recipe.

Examples

iex> template = Rendro.Recipes.BrandedInvoice.page_template()
iex> template.name
:branded_invoice
iex> Enum.map(template.regions, & &1.name) |> Enum.sort()
[:body, :footer, :header, :logo]

iex> data = %{id: "INV-001", date: ~D[2026-01-15], items: [], brand: %{font_name: :brand_heading, logo_name: :company_logo}}
iex> sections = Rendro.Recipes.BrandedInvoice.sections(data)
iex> length(sections)
4
iex> Enum.map(sections, & &1.region) |> Enum.sort()
[:body, :footer, :header, :logo]

iex> data = %{id: "INV-001", date: ~D[2026-01-15], items: [], brand: %{font_name: :brand_heading, logo_name: :company_logo}}
iex> doc = Rendro.Recipes.BrandedInvoice.document(data)
iex> doc.page_template
:branded_invoice
iex> Map.has_key?(doc.font_registry.fonts, :brand_heading)
true
iex> Map.has_key?(doc.asset_registry.assets, :company_logo)
true