@type t() :: %Claudio.A2A.AgentCard.Skill{
  description: String.t(),
  examples: [String.t()] | nil,
  id: String.t(),
  input_modes: [String.t()] | nil,
  name: String.t(),
  output_modes: [String.t()] | nil,
  tags: [String.t()]
}