add qemu-guest-agent as default enabled

proxmox.go

@@ -54,6 +54,9 @@ func buildNetworkConfig(config *Config) string {
 	if config.VlanTag > 0 {
 		netConfig += fmt.Sprintf(",tag=%d", config.VlanTag)
 	}
+	if config.Firewall {
+		netConfig += ",firewall=1"
+	}
 	return netConfig
 }
 
@@ -196,9 +199,8 @@ func createProxmoxVM(config *Config) error {
 		},
 	}
 
-	if config.Firewall {
-		commands = append(commands, []string{"qm", "set", fmt.Sprintf("%d", config.VMID), "--firewall", "1"})
-	}
+	// Firewall is now handled as part of the network config (buildNetworkConfig),
+	// so no separate "qm set --firewall" command is required here.
 
 	commands = append(commands, [][]string{
 		{"qm", "template", fmt.Sprintf("%d", config.VMID)},