feat(desktop&tenant): Enhance desktop account and task consumer presence management

- Added new fields to DesktopAccountInfo for tracking account session and task consumer online status, along with queued publish task count and oldest queued publish task timestamp.
- Updated DesktopDispatchEvent to include server time for better synchronization.
- Implemented separate presence management for task consumers, including marking presence and loading presence state.
- Enhanced DesktopAccountService to apply publish queue summaries and manage task consumer presence.
- Introduced new methods for replaying queued publish tasks in DesktopDispatchHandler.
- Updated tests to cover new presence management logic and ensure correct behavior of account session and task consumer online status.

server/internal/tenant/app/desktop_task_service.go

@@ -157,6 +157,7 @@ func (s *DesktopTaskService) Lease(ctx context.Context, client *repository.Deskt
 	if client == nil {
 		return nil, response.ErrUnauthorized(40108, "desktop_client_missing", "desktop client context is required")
 	}
+	markDesktopTaskConsumerPresent(ctx, s.redis, client.ID)
 
 	taskID := routeTaskID
 	if taskID == nil && req.TaskID != nil && strings.TrimSpace(*req.TaskID) != "" {