Typer/rich emits ANSI styling in CI's --help output (e.g. `--metrics`
becomes `-\x1b[0m\x1b[1;36m-metrics`), so literal substring asserts
like `assert "--metrics" in result.output` fail. Locally the test runner
auto-detects no-TTY and produces plain text, masking the issue.
Add a small `_clean()` helper per test file that strips ANSI escape
codes (`\x1b\[[0-9;]*m`) before substring containment checks.
