📚 Improved database structure & utils with new files for shm, wal, and enhanced debugging tools. 🆓

backend/app/utils/debug_drucker_erkennung.py

@@ -148,10 +148,12 @@ def test_network_connectivity():
             try:
                 if platform.system().lower() == "windows":
                     result = subprocess.run(['ping', '-n', '1', '-w', '3000', ip], 
-                                          capture_output=True, text=True, timeout=5)
+                                          capture_output=True, text=True, timeout=5,
+                                          encoding='utf-8', errors='replace')
                 else:
                     result = subprocess.run(['ping', '-c', '1', '-W', '3', ip], 
-                                          capture_output=True, text=True, timeout=5)
+                                          capture_output=True, text=True, timeout=5,
+                                          encoding='utf-8', errors='replace')
                 
                 if result.returncode == 0:
                     log_message(f"   ✅ Ping erfolgreich")