Consider error and greater severity returning an error interface

Use case is to simplify logging and returning of errors:
```golang
if err != nil {
  err = fmt.Errorf("wrapping with more details: %w", err)
  slog.Error(err)
  return err
}
```
to
```golang
if err != nil {
  return slog.Errorf("wrapping with more details: %w", err)
}
```