Add setting to hide pasted slash command content

What feature would you like to see?

Add a setting to prevent Codex from pasting the content of slash commands in the chat. Currently, when invoking a slash command, Codex pastes the full content of the command file (e.g., draftpr.md) with placeholders replaced by the supplied arguments.

I would like an option to suppress this pasted content, as I don't need to see it in the chat history.

Additional information

According to the slash commands documentation:

"Codex pastes the content of draftpr.md, replacing placeholders with the arguments you supplied. Run /status or /diff afterward to confirm the prompt triggered the intended workflow."

While this behavior may be useful for debugging, it clutters the chat when I already know what the command does. A setting to toggle this behavior would improve the user experience.