"feat: Enhanced printer monitoring functionality in backend"

backend/app/utils/printer_monitor.py

@@ -500,9 +500,11 @@ class PrinterMonitor:
             "total": len(status_dict),
             "online": 0,
             "offline": 0,
+            "printing": 0,     # Neuer Status: Drucker druckt gerade
             "standby": 0,
             "unreachable": 0,
-            "unconfigured": 0
+            "unconfigured": 0,
+            "error": 0         # Status für unbekannte Fehler
         }
         
         for printer_info in status_dict.values():
@@ -510,6 +512,7 @@ class PrinterMonitor:
             if status in summary:
                 summary[status] += 1
             else:
+                # Fallback für unbekannte Status
                 summary["offline"] += 1
         
         return summary