Add missing admin action files and navigation links

- Add 11 missing server action files: badges, bulk-users, catalog, catalog-bc, catalog-items, import-badges, import-furni, multi-account-detect, permissions, rooms, soundtracks
- Add missing admin navigation links: tickets, sounds, translations, import, radio sub-pages
- Add translation keys for all new navigation items

src/app/admin/import/pets/loading.tsx

@@ -0,0 +1,13 @@
+export default function Loading() {
+  return (
+    <div className="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-6 gap-3">
+      {Array.from({ length: 18 }).map((_, i) => (
+        <div key={`pet-skeleton-${i}`} className="rounded-lg border bg-card p-3 animate-pulse">
+          <div className="h-12 w-12 bg-muted rounded mx-auto mb-2" />
+          <div className="h-4 bg-muted rounded w-3/4 mx-auto mb-1" />
+          <div className="h-7 bg-muted rounded" />
+        </div>
+      ))}
+    </div>
+  )
+}