Simplify infrastructure services and move all recurring jobs to Hangfire

backend/Core/Musify.Infrastructure/Jobs/TempUploadsCleanupJob.cs

@@ -0,0 +1,10 @@
+using Mediator;
+using Musify.Application.UploadIntents;
+
+namespace Musify.Infrastructure.Jobs;
+
+public class TempUploadsCleanupJob(IMediator mediator)
+{
+    public async Task RunAsync(CancellationToken cancellationToken) =>
+        await mediator.Send(new DeleteStaleTempUploadsCommand(), cancellationToken);
+}