refactor(issue,pr): trim help, restating comments and single-use helpers

Cut issue, pr, label, milestone and comment examples to at most three, drop
doc comments that only restate the name, fold the comment and attachment
argument lookups into one closure each, and inline label helpers with one
caller.

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

internal/app/labels.go

@@ -23,7 +23,6 @@ type labelScope func(*cobra.Command) (services.Labels, error)
 // labelColors are the colors of new labels created without --color, from Gitea's default labels.
 var labelColors = []string{"ee0701", "fbca04", "84b6eb", "cc317c", "c2e0c6", "0e8a16", "1d76db", "5319e7", "d4c5f9", "e99695", "bfd4f2", "006b75"}
 
-// labelArguments is the ARGUMENTS help of commands that take labels.
 const labelArguments = `A label can be supplied by its name, such as "bug" or "kind/feature", or by its ID. A
 number is an ID first, then a name.`
 
@@ -90,7 +89,6 @@ func labelName(s services.Labels, item services.Label) string {
 	return fmt.Sprintf("label %q in %s", item.Name, s.Scope())
 }
 
-// labelFields are the fields of label create and edit.
 type labelFields struct {
 	name, color, description string
 	exclusive, archived      bool
@@ -184,7 +182,12 @@ $ tea label create bug -c ee0701 --force`, Args: usageArgs(cobra.MaximumNArgs(1)
 		if err != nil {
 			return forceHint(err)
 		}
-		return a.reportLabel(cmd, s, item, updated)
+		verb := "Created"
+		if updated {
+			verb = "Updated"
+		}
+		a.done(cmd, "%s %s", verb, labelName(s, item))
+		return a.jsonResult(cmd, item)
 	}}
 	fields.register(cmd, "Label `name`")
 	_ = cmd.Flags().MarkHidden("name")
@@ -228,16 +231,6 @@ func forceHint(err error) error {
 	return err
 }
 
-// reportLabel reports a created or updated label as JSON or with a ✓ line.
-func (a *application) reportLabel(cmd *cobra.Command, s services.Labels, item services.Label, updated bool) error {
-	verb := "Created"
-	if updated {
-		verb = "Updated"
-	}
-	a.done(cmd, "%s %s", verb, labelName(s, item))
-	return a.jsonResult(cmd, item)
-}
-
 func (a *application) labelEditCommand(scope labelScope, complete cobra.CompletionFunc) *cobra.Command {
 	var fields labelFields
 	var byName bool
@@ -317,7 +310,6 @@ $ tea label export --repo alice/old | tea label import - --repo alice/new`, Args
 	return cmd
 }
 
-// importLabels creates the labels of a label file, or of stdin for "-".
 func (a *application) importLabels(cmd *cobra.Command, scope labelScope, file string, force bool) error {
 	data, err := readFileOrStdin(cmd.InOrStdin(), file)
 	if err != nil {
@@ -331,12 +323,7 @@ func (a *application) importLabels(cmd *cobra.Command, scope labelScope, file st
 	if err != nil {
 		return err
 	}
-	return a.createLabels(cmd, s, rows, force)
-}
-
-// createLabels creates each label in rows, continuing past failures. A label that exists already
-// is updated with force and fails otherwise.
-func (a *application) createLabels(cmd *cobra.Command, s services.Labels, rows []services.LabelOptions, force bool) error {
+	// Each row is created, or updated with force, continuing past failures.
 	existing, err := s.All(cmd.Context())
 	if err != nil {
 		return err