fix(models): correct UserSetting import namespace and add test coverage

tests/Feature/UploadTest.php

@@ -3,6 +3,8 @@
 namespace Tests\Feature;
 
 use App\Features\Consoles\Models\Console;
+use App\Features\Games\Models\Game;
+use App\Features\Games\Models\RomFile;
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Http\UploadedFile;
@@ -88,4 +90,29 @@ class UploadTest extends TestCase
 
         Storage::disk('local')->assertExists("roms/{$console->slug}/game.nes");
     }
+
+    public function test_upload_store_skips_duplicate_rom_files(): void
+    {
+        Storage::fake('local');
+        $user = User::factory()->create();
+        $console = Console::factory()->create(['rom_extensions' => ['nes']]);
+
+        $content = str_repeat('x', 1024);
+        $hash = hash('sha256', $content);
+
+        $game = Game::factory()->create(['console_id' => $console->id]);
+        RomFile::factory()->create([
+            'game_id' => $game->id,
+            'file_hash' => $hash,
+        ]);
+
+        $file = UploadedFile::fake()->createWithContent('game.nes', $content);
+
+        $this->actingAs($user)
+            ->post(route('upload.store'), [
+                'console_id' => $console->id,
+                'rom_files' => [$file],
+            ])
+            ->assertRedirect();
+    }
 }