Function process_update_notice 

pub async fn process_update_notice<I, S>(
    args: I,
    interactive_text_output: bool,
) -> Option<String>
where
    I: IntoIterator<Item = S>,
    S: Into<String>,

Renders best-effort process notices after primary CLI output is emitted.

The notice lifecycle is process-level behavior because it depends on the final command, terminal mode, and post-command update checks. It is exposed here so main.rs no longer calls the interface adapter directly.