@type op_type() ::
  :interrupt
  | :user_input
  | :user_turn
  | :override_turn_context
  | :exec_approval
  | :patch_approval
  | :resolve_elicitation
  | :user_input_answer
  | :add_to_history
  | :get_history_entry_request
  | :list_mcp_tools
  | :refresh_mcp_servers
  | :list_custom_prompts
  | :list_skills
  | :compact
  | :undo
  | :thread_rollback
  | :review
  | :shutdown
  | :run_user_shell_command
  | :list_models

@type review_decision() ::
  :approved
  | :approved_for_session
  | :denied
  | :abort
  | {:approved_execpolicy_amendment, term()}

@type t() :: %Codex.Protocol.Ops{payload: map(), type: op_type()}