@type t() :: %DotPrompt.Result{
  cache_hit: boolean(),
  compiled_tokens: integer(),
  injected_tokens: integer(),
  major: integer() | nil,
  metadata: map() | nil,
  prompt: String.t() | nil,
  response_contract: map() | nil,
  system: String.t() | nil,
  user: String.t() | nil,
  vary_selections: map() | nil,
  version: String.t() | integer() | nil
}