feat: add tag discovery analytics and reporting

app/Http/Controllers/Studio/StudioArtworksApiController.php

@@ -10,6 +10,7 @@ use App\Services\ArtworkSearchIndexer;
 use App\Services\ArtworkVersioningService;
 use App\Services\Studio\StudioArtworkQueryService;
 use App\Services\Studio\StudioBulkActionService;
+use App\Services\Tags\TagDiscoveryService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Log;
@@ -27,6 +28,7 @@ final class StudioArtworksApiController extends Controller
         private readonly StudioBulkActionService $bulkService,
         private readonly ArtworkVersioningService $versioningService,
         private readonly ArtworkSearchIndexer $searchIndexer,
+        private readonly TagDiscoveryService $tagDiscoveryService,
     ) {}
 
     /**
@@ -264,18 +266,13 @@ final class StudioArtworksApiController extends Controller
 
     /**
      * GET /api/studio/tags/search?q=...
-     * Search active tags by name for the bulk tag picker.
+     * Search active tags for studio pickers, with empty-query fallback to popular tags.
      */
     public function searchTags(Request $request): JsonResponse
     {
         $query = trim((string) $request->input('q'));
 
-        $tags = \App\Models\Tag::query()
-            ->where('is_active', true)
-            ->when($query !== '', fn ($q) => $q->where('name', 'LIKE', "%{$query}%"))
-            ->orderByDesc('usage_count')
-            ->limit(30)
-            ->get(['id', 'name', 'slug', 'usage_count']);
+        $tags = $this->tagDiscoveryService->searchSuggestions($query, 30);
 
         return response()->json($tags);
     }