@type action_type() ::
  :modify_intensity
  | :add_warmup_time
  | :add_activity
  | :replace_exercise
  | :exclude_exercise
  | :reduce_sets
  | :reduce_reps
  | :increase_rest

@type scope() :: :activity | :block | :day | :week | :phase | :plan

@type t() :: %WplAi.AST.Action{params: map(), scope: scope(), type: action_type()}