Function format_compact 

pub fn format_compact(
    result: &TestResult,
    bytes: bool,
    dl_bytes: u64,
    ul_bytes: u64,
    dl_duration: f64,
    ul_duration: f64,
    elapsed: Duration,
    profile: UserProfile,
    theme: Theme,
)

Compact mode — key metrics with ratings and brief summary. Middle ground between simple (too minimal) and detailed (too verbose).