fix(a11y): nome acessivel dos botoes do notebook inclui o numero visivel (WCAG 2.5.3)

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

app/components/story/NotebookStory.tsx

@@ -293,7 +293,7 @@ export default function NotebookStory({
                 <button
                   key={project.id}
                   type="button"
-                  aria-label={`Mostrar ${project.title}`}
+                  aria-label={`Mostrar ${project.title}, ${String(index + 1).padStart(2, "0")}`}
                   aria-pressed={index === activeIndex}
                   onClick={() => handleSelectTab(index)}
                 >