refactor(backend): use explicit types instead of var by default

Foxnouns.Backend/Services/ObjectStorageService.cs

@@ -1,4 +1,5 @@
 using Minio;
+using Minio.DataModel;
 using Minio.DataModel.Args;
 using Minio.Exceptions;
 
@@ -48,13 +49,4 @@ public class ObjectStorageService(ILogger logger, Config config, IMinioClient mi
             ct
         );
     }
-
-    public async Task GetObjectAsync(string path, CancellationToken ct = default)
-    {
-        var stream = new MemoryStream();
-        var resp = await minioClient.GetObjectAsync(
-            new GetObjectArgs().WithBucket(config.Storage.Bucket).WithObject(path),
-            ct
-        );
-    }
 }