docs: def command(state, args):
      """Add an anime from an AniDB search."""
      if len(args) < 2:
          print(f'Usage: {args[0]} {{ID|aid:AID}}')
          return
      aid = state.results.parse_aid(args[1], default_key='anidb')
      anime = request_anime(aid)
      query.update.add(state.db, anime)