`once list` ANSI output breaks programmatic parsing in CI

[amiorin]

Problem

once list always emits ANSI escape sequences even when stdout is not a terminal.

Raw output:

\e]8;;https://foo.bigconfig.space\e\\[94mfoo.bigconfig.space[m\e]8;;\e\\ (running)

There is no --no-color, --plain, or --output json flag to suppress this.

Impact

Any script, CI job, or Ansible module that needs to parse once list must first strip ANSI codes with a brittle regex before it can extract hostnames or statuses.This is fragile — it breaks if the output format changes or if a hostname does not match the assumed domain pattern.

Expected behaviour

At minimum, once should honour the NO_COLOR convention so that setting NO_COLOR=1 (or detecting a non-TTY stdout) suppresses all ANSI codes.

A --output json flag on once list would be even better:

[
  {"host": "foo.bigconfig.space", "status": "running"},
  {"host": "bar.bigconfig.space", "status": "running"}
]

Steps to reproduce

once list > output.txt