Function push_count 

pub fn push_count(
    parts: &mut Vec<String>,
    count: usize,
    color: fn(&str) -> String,
    label: &str,
)

Appends "{count} {label}" (styled with color) to parts when count is nonzero. Collapses the repeated if count > 0 { parts.push(color(...)) } idiom used when building summary footers from several counters.