refactor(cms): deduplicate shared admin components and fix studio batch completion

- fix(studio): stop markBatchDone infinite recursion so batches complete
- refactor(api): merge api-response into api and drop the duplicate module
- refactor(media): extract shared media loader and URL validator
- refactor(ui): extract shared LoadingSpinner for site and admin groups
- refactor(dates): consolidate raw date formatting into formatDate util
- refactor(logs): share a single generic log-list loader across tables
- refactor(theme): merge both ColorField components and reuse contrast helpers
- refactor(import): extract shared ImportErrorBanner and SearchInput
- chore(): remove dead theme-editor-tabs after inlining tab components

src/app/admin/prefixes/prefixes-client.tsx

@@ -24,6 +24,7 @@ import {
 } from "@/components/ui/table";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { useServerAction } from "@/hooks/use-server-action";
+import { formatDate } from "@/lib/format-date";
 
 import { PrefixDialog } from "./prefix-dialog";
 import {
@@ -314,7 +315,7 @@ export function PrefixesClient({ canEdit }: { canEdit: boolean }) {
 										<TableCell>{prefix.active ? "Yes" : "No"}</TableCell>
 										<TableCell className="text-xs">
 											{prefix.created_at
-												? new Date(prefix.created_at).toLocaleDateString()
+												? formatDate(new Date(prefix.created_at), "date")
 												: "—"}
 										</TableCell>
 										{canEdit && (