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/studio/import-attachment/route.ts

@@ -1,5 +1,5 @@
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import { validateClassnames } from "@/lib/furni/studio-inspection";
 import { PERMS } from "@/lib/permission-slugs";
 import { stageFurnitureAttachment } from "@/lib/services/furni-attachment";

src/app/api/admin/studio/import-jobs/route.ts

@@ -1,7 +1,7 @@
 import { after } from "next/server";
 import { z } from "zod";
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import { validateClassnames } from "@/lib/furni/studio-inspection";
 import { PERMS } from "@/lib/permission-slugs";
 import { redis } from "@/lib/redis";

src/app/api/admin/studio/inspect/route.ts

@@ -1,5 +1,5 @@
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import { validateClassnames } from "@/lib/furni/studio-inspection";
 import { PERMS } from "@/lib/permission-slugs";
 import { inspectFurniture } from "@/lib/services/furniture-inspection";

src/app/api/admin/studio/nitro-quality/route.ts

@@ -1,8 +1,8 @@
 import { promises as fs } from "node:fs";
 import path from "node:path";
 import sharp from "sharp";
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import {
 	inspectNitroScales,
 	object,

src/app/api/admin/studio/nitro-scale32/route.ts

@@ -1,8 +1,8 @@
 import { createHash, randomUUID } from "node:crypto";
 import { promises as fs } from "node:fs";
 import path from "node:path";
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import { generateScale32 } from "@/lib/furni/nitro-scale32";
 import { validateClassnames } from "@/lib/furni/studio-inspection";
 import { PERMS } from "@/lib/permission-slugs";

src/app/api/admin/studio/source-assets/route.ts

@@ -1,5 +1,5 @@
+import { apiError, apiOk } from "@/lib/api";
 import { withAdmin } from "@/lib/api-handler";
-import { apiError, apiOk } from "@/lib/api-response";
 import type {
 	SourceAssetCheck,
 	SourceAssetItem,