chore(storybook): localize sidebar menus and hide unused stories

src/components/label.stories.tsx

@@ -27,6 +27,8 @@ function SpecimenGrid({ states }: { states: BoardState[] }) {
 
 const meta = {
   title: "Components/Form/Label",
+  // `internal` keeps it out of the sidebar by default; Story IDs and direct URLs stay valid.
+  tags: ["internal"],
   component: Label,
   parameters: {
     layout: "padded",