Show git step details only on failure

- Render `step.detail` only for failed step states
- Keep failed detail text styled in warning red tone

Co-authored-by: codex <codex@users.noreply.github.com>
dd920846b9Julius Marminge committed on 2/12/2026, 10:47:51 PMparentb7af14a
1 file changedLine totals unavailable