Function format_elapsed 

pub fn format_elapsed(started: Instant) -> String

Format the time elapsed since started as a human-readable string.

Returns MmSS for durations ≥ 60 s, otherwise S.s.

Examples

use codetether_agent::tui::ui::chat_view::spinner::format_elapsed;
// Instant::now() has ≈0 s elapsed, so format is " 0.xs"
let s = format_elapsed(std::time::Instant::now());
assert!(s.starts_with(' '));
assert!(s.contains('s'));