Fix styling, job endpoints, and infinite worker loops

src/Predictalytics.Worker/Services/TradeHistoryWorker.cs

@@ -34,9 +34,9 @@ public class TradeHistoryWorker : BackgroundService
 
         while (!stoppingToken.IsCancellationRequested)
         {
+            IReadOnlyList<Domain.Entities.Trader> tradersToProcess = new List<Domain.Entities.Trader>();
             try
             {
-                IReadOnlyList<Domain.Entities.Trader> tradersToProcess = new List<Domain.Entities.Trader>();
                 Domain.Entities.BackgroundJob? activeJob = null;
                 
                 using (var scope = _services.CreateScope())
@@ -260,7 +260,10 @@ public class TradeHistoryWorker : BackgroundService
             }
             catch (Exception ex) { _logger.LogError(ex, "TradeHistoryWorker error"); }
 
-            await Task.Delay(TimeSpan.FromMinutes(2), stoppingToken);
+            if (tradersToProcess == null || tradersToProcess.Count == 0)
+            {
+                await Task.Delay(TimeSpan.FromMinutes(2), stoppingToken);
+            }
         }
 
         _logger.LogInformation("📜 TradeHistoryWorker stopped");