@type day_type() :: :training | :rest | :active_recovery | :assessment

@type schedule_flex() :: :strict | :flexible

@type schedule_pref() :: :morning | :afternoon | :evening | :any

@type t() :: %WplAi.AST.Day{
  blocks: [Block.t()],
  day_name: String.t() | integer(),
  day_type: day_type(),
  duration: Duration.t(),
  label: String.t() | nil,
  meta: map(),
  notes: String.t() | nil,
  schedule: {schedule_pref(), schedule_flex()} | nil
}