feat(label): edit a label in a form without flags

label edit without flags on a terminal now opens a form with the label's
name, color, description and flags, like milestone edit and issue edit,
instead of failing; without a terminal it reports the shared "nothing to
edit" error. The help of issue and milestone close and reopen names its
commands without generating the text from the verb.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/milestone_state.go

@@ -18,11 +18,11 @@ import (
 // of changing them.
 func (a *application) milestoneStateCommand(verb string, service milestoneService) *cobra.Command {
 	var byName bool
-	state, past := "closed", "Closed"
+	state, past, short := "closed", "Closed", "Close milestones"
 	if verb == "reopen" {
-		state, past = "open", "Reopened"
+		state, past, short = "open", "Reopened", "Reopen milestones"
 	}
-	cmd := &cobra.Command{Use: verb + " <milestone>...", Short: titleCase(verb) + " milestones", Example: fmt.Sprintf(`$ tea milestone %[1]s v1.0
+	cmd := &cobra.Command{Use: verb + " <milestone>...", Short: short, Example: fmt.Sprintf(`$ tea milestone %[1]s v1.0
 $ tea milestone %[1]s v1.0 v1.1`, verb), Annotations: map[string]string{"tea.arguments": milestoneArguments}, Args: usageArgs(cobra.MinimumNArgs(1)), RunE: func(cmd *cobra.Command, args []string) error {
 		if slices.ContainsFunc(args, func(arg string) bool { return strings.TrimSpace(arg) == "" }) {
 			return clierr.Wrap(clierr.Usage, errors.New("milestone title or ID cannot be empty"))