more fixes

app/Http/Controllers/Studio/StudioArtworksApiController.php

@@ -341,8 +341,23 @@ final class StudioArtworksApiController extends Controller
 
             // 4. Update the artwork's file-serving fields (hash drives thumbnail URLs)
             $origExt = strtolower(pathinfo($originalPath, PATHINFO_EXTENSION) ?: '');
+            $displayFileName = $origFilename;
+
+            $clientName = basename(str_replace('\\', '/', (string) $file->getClientOriginalName()));
+            $clientName = preg_replace('/[\x00-\x1F\x7F]/', '', (string) $clientName) ?? '';
+            $clientName = trim((string) $clientName);
+
+            if ($clientName !== '') {
+                $clientExt = strtolower((string) pathinfo($clientName, PATHINFO_EXTENSION));
+                if ($clientExt === '' && $origExt !== '') {
+                    $clientName .= '.' . $origExt;
+                }
+
+                $displayFileName = $clientName;
+            }
+
             $artwork->update([
-                'file_name' => $origFilename,
+                'file_name' => $displayFileName,
                 'file_path' => '',
                 'file_size' => $size,
                 'mime_type' => $origMime,