feat(backend): add admin evaluation history, engine, simulation, bot API controllers and global exception middleware

FinlyticBackend/Services/FavoritesPriceBackgroundService.cs

@@ -33,7 +33,7 @@ public class FavoritesPriceBackgroundService(
                 logger.LogWarning(ex, "[FavoritesPriceBackgroundService] Error broadcasting price updates.");
             }
 
-            await Task.Delay(10000, stoppingToken);
+            await Task.Delay(2000, stoppingToken);
         }
     }
 
@@ -50,24 +50,23 @@ public class FavoritesPriceBackgroundService(
         
         if (userFavorites.Count == 0) return;
 
-        // 2. Pro User einfach die Kurse abfragen und senden
+        // 2. Pro User einfach die Kurse parallel abfragen und senden
         foreach (var userGroup in userFavorites.GroupBy(f => f.UserId.ToString()))
         {
             var userId = userGroup.Key;
-            var priceUpdates = new Dictionary<string, object>();
+            var priceUpdates = new System.Collections.Concurrent.ConcurrentDictionary<string, object>();
 
-            foreach (var fav in userGroup)
+            var tasks = userGroup.Select(async fav =>
             {
                 var cleanIsin = fav.Isin.Trim().ToUpperInvariant();
-
-                if (!mqttClient.IsConnected) continue;
+                if (!mqttClient.IsConnected) return;
 
                 try
                 {
                     var livePrice = await mqttClient.SendRpcRequestAsync<LivePriceDto, IsinRequest>(
                         "tr_GetLivePrice",
                         new IsinRequest(cleanIsin),
-                        TimeSpan.FromSeconds(2)
+                        TimeSpan.FromSeconds(4)
                     );
 
                     if (livePrice != null)
@@ -80,12 +79,14 @@ public class FavoritesPriceBackgroundService(
                     }
                 }
                 catch { /* Ignorieren bei Einzel-Timeout */ }
-            }
+            });
 
-            if (priceUpdates.Count > 0)
+            await Task.WhenAll(tasks);
+
+            if (!priceUpdates.IsEmpty)
             {
                 await hubContext.Clients.Group(FavoritesPriceHub.GetGroupName(userId))
-                    .SendAsync("ReceiveFavoritePrices", priceUpdates, cancellationToken);
+                    .SendAsync("ReceiveFavoritePrices", new Dictionary<string, object>(priceUpdates), cancellationToken);
             }
         }
     }