fix(cli): accept comma-separated multi-select input

pkg/cli/prompt_test.go

@@ -91,6 +91,22 @@ func TestChooseMulti_Good_Filter(t *testing.T) {
 	assert.Equal(t, []string{"apple", "apricot"}, vals)
 }
 
+func TestChooseMulti_Good_Commas(t *testing.T) {
+	SetStdin(strings.NewReader("1,3\n"))
+	defer SetStdin(nil)
+
+	vals := ChooseMulti("Pick", []string{"a", "b", "c"})
+	assert.Equal(t, []string{"a", "c"}, vals)
+}
+
+func TestChooseMulti_Good_CommasAndRanges(t *testing.T) {
+	SetStdin(strings.NewReader("1-2,4\n"))
+	defer SetStdin(nil)
+
+	vals := ChooseMulti("Pick", []string{"a", "b", "c", "d"})
+	assert.Equal(t, []string{"a", "b", "d"}, vals)
+}
+
 func TestSetStdin_Good_ResetNil(t *testing.T) {
 	original := stdin
 	t.Cleanup(func() { stdin = original })

pkg/cli/utils.go

@@ -503,12 +503,15 @@ func looksLikeMultiSelectionInput(input string) bool {
 	return hasDigit
 }
 
-// parseMultiSelection parses a multi-selection string like "1 3 5" or "1-3 5".
+// parseMultiSelection parses a multi-selection string like "1 3 5", "1,3,5",
+// or "1-3 5".
 // Returns 0-based indices.
 func parseMultiSelection(input string, maxItems int) ([]int, error) {
 	selected := make(map[int]bool)
 
-	for part := range strings.FieldsSeq(input) {
+	normalized := strings.NewReplacer(",", " ").Replace(input)
+
+	for part := range strings.FieldsSeq(normalized) {
 		// Check for range (e.g., "1-3")
 		if strings.Contains(part, "-") {
 			var rangeParts []string