Refine use cases rule examples

lib/useCaseTemplateDuplicate.ts

@@ -0,0 +1,7 @@
+/** Title for a rule duplicated from a use-case completed demo (profile list). */
+export function useCaseTemplateDuplicateTitle(sourceTitle: string): string {
+  const trimmed = sourceTitle.trim();
+  return trimmed.length > 0
+    ? `${trimmed} Template (Copy)`
+    : "Community Rule Template (Copy)";
+}