fix(cli): honor default selection in multi-select

pkg/cli/prompt_test.go

@@ -165,6 +165,14 @@ func TestChooseMulti_Good_CommasAndRanges(t *testing.T) {
 	assert.Equal(t, []string{"a", "b", "d"}, vals)
 }
 
+func TestChooseMulti_Good_DefaultIndex(t *testing.T) {
+	SetStdin(strings.NewReader("\n"))
+	defer SetStdin(nil)
+
+	vals := ChooseMulti("Pick", []string{"a", "b", "c"}, WithDefaultIndex[string](1))
+	assert.Equal(t, []string{"b"}, vals)
+}
+
 func TestSetStdin_Good_ResetNil(t *testing.T) {
 	original := stdin
 	t.Cleanup(func() { stdin = original })

pkg/cli/utils.go

@@ -441,6 +441,9 @@ func ChooseMulti[T any](prompt string, items []T, opts ...ChooseOption[T]) []T {
 
 		// Empty response returns no selections
 		if response == "" {
+			if cfg.defaultN >= 0 {
+				return []T{items[defaultVisibleIndex(visible, cfg.defaultN)]}
+			}
 			return nil
 		}