The `--silent` flag is not working as intended

[doggy8088]

Describe the bug

I see this: https://github.com/github/copilot-cli/issues/628

The -s or --silent flag still output verbose information.

Affected version

0.0.365 Commit: 76d0881

Steps to reproduce the behavior

1. Type copilot --model gpt-5-mini -p 'review last commit' -s
2. View the output

Expected behavior

I expected only the final message as the result.

Additional context

No response