feat(ops): allow hiding alert events

backend/internal/service/ops_settings.go

@@ -372,6 +372,7 @@ func defaultOpsAdvancedSettings() *OpsAdvancedSettings {
 		IgnoreContextCanceled:     true,  // Default to true - client disconnects are not errors
 		IgnoreNoAvailableAccounts: false, // Default to false - this is a real routing issue
 		DisplayOpenAITokenStats:   false,
+		DisplayAlertEvents:        true,
 		AutoRefreshEnabled:        false,
 		AutoRefreshIntervalSec:    30,
 	}
@@ -439,7 +440,7 @@ func (s *OpsService) GetOpsAdvancedSettings(ctx context.Context) (*OpsAdvancedSe
 		return nil, err
 	}
 
-	cfg := &OpsAdvancedSettings{}
+	cfg := defaultOpsAdvancedSettings()
 	if err := json.Unmarshal([]byte(raw), cfg); err != nil {
 		return defaultCfg, nil
 	}