docs: def save_config(self, data: dict) -> Path:
          """Save a config to the expected location."""
          out_dir = Path(self.families_dir) / data['family']
          out_dir.mkdir(parents=True, exist_ok=True)
          out_path = out_dir / 'pedigree.yaml'
          dump = ruamel.yaml.round_trip_dump(data, indent=4, block_seq_indent=2)
          out_path.write_text(dump)
          return out_path