Function TestLiveElapsed

internal/tui/tui_test.go:1600–1625

TestLiveElapsed: the running wall-clock readout, whole seconds under a minute (no spinning sub-second decimal at the spinner's refresh rate), then `6m 51s` / `1h 14m`, with the trailing unit dropped when zero.

(t *testing.T)

		{0, "0 tok"},
		{1, "1 tok"},
		{900, "900 tok"},
		{999, "999 tok"},
		{1000, "1.0k tok"},
		{1200, "1.2k tok"},
		{1900, "1.9k tok"}, // the pair the user flagged: must stay constant width
		{2000, "2.0k tok"}, // not "2k tok"
		{9999, "10.0k tok"},
		{10_000, "10.0k tok"},
		{42_000, "42.0k tok"},
		{999_999, "1000.0k tok"},
		{1_000_000, "1.0M tok"},
		{1_500_000, "1.5M tok"},
		{12_345_678, "12.3M tok"},
	}
	for _, c := range cases {
		if got := humanTokens(c.n); got != c.want {
			t.Errorf("humanTokens(%d) = %q, want %q", c.n, got, c.want)
		}
	}
}

// TestLiveElapsed: the running wall-clock readout, whole seconds under a
// minute (no spinning sub-second decimal at the spinner's refresh rate), then
// `6m 51s` / `1h 14m`, with the lower unit always two digits and never
// dropped (`8m 00s`, not `8m`), so the readout never shrinks mid-turn.
func TestLiveElapsed(t *testing.T) {
	cases := []struct {
		d    time.Duration
		want string