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/api/admin/import/furni/resync/route.ts

@@ -1,7 +1,7 @@
 import { existsSync } from "node:fs";
 import { asc, inArray, sql } from "drizzle-orm";
+import { apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiOk } from "@/lib/api-response";
 import { db, ItemsBase } from "@/lib/db";
 import { PERMS } from "@/lib/permissions";
 import {