Network handling and MacOS optimization

QemuVmManager.Services/VmManagementService.cs

@@ -472,4 +472,25 @@ public class VmManagementService
     {
         return await _processManager.GetPerformanceHistoryAsync(vmName, maxSamples);
     }
+
+    public async Task UpdateVmConfigurationAsync(string vmName, VmConfiguration updatedConfig)
+    {
+        if (!_vmConfigurations.ContainsKey(vmName))
+        {
+            throw new ArgumentException($"VM configuration '{vmName}' not found");
+        }
+
+        // Ensure name consistency
+        updatedConfig.Name = vmName;
+        updatedConfig.LastModified = DateTime.UtcNow;
+        
+        // Validate configuration
+        ValidateConfiguration(updatedConfig);
+        
+        // Save updated configuration
+        await SaveVmConfigurationAsync(updatedConfig);
+        
+        // Update in-memory cache
+        _vmConfigurations[vmName] = updatedConfig;
+    }
 }