Not respecting 'fancy' stdout re-piping

I wanted to wrap

```
goaccess ./combined/combined.log -o goaccess_report.html --log-format=AWSS3
```

with `duct`

Normally looks like this

but with `duct` looks like

Start by reproducing the shown goaccess command when it is wrapped with duct, comparing the normal terminal output with the captured or re-piped output. Trace duct's stdout handling and terminal-output decisions; done means the wrapped command preserves the expected fancy stdout presentation. The issue names no source file or test, so those must be located first.

Written by the indexing model from the issue text.