fix: skip UPnP/firewall in test mode to fix flaky CI

- Add SetTestMode(true) to Network service
- Skips upnpDiscover(2s blocking) and firewall rule creation in tests
- Tests enable test mode in SetUp() before Initialize()
- This eliminates the 2-second UPnP block per HostGame call that was
  causing cascading timeouts in CI containers

Author: IOleg-crypto

engine/networking/network_service.cpp

@@ -175,25 +175,28 @@ namespace Chained
 		m_PlayerManager.AddHostSelf(HostNetworkID, m_PlayerManager.GetLocalPlayerName(),
 									m_PlayerManager.GetLocalSkinIndex());
 
-		if (!m_UpnpMapper.IsAvailable())
+		if (!m_TestMode)
 		{
-			m_UpnpMapper.Initialize();
-		}
-		if (m_UpnpMapper.IsAvailable())
-		{
-			m_UpnpMapper.AddMapping(port, "UDP", "ChainedDecos");
-			CH_CORE_INFO("Network: UPnP mapping added.");
-		}
-		else
-		{
-			CH_CORE_WARN("Network: UPnP unavailable — players must forward port {} manually.", port);
-		}
+			if (!m_UpnpMapper.IsAvailable())
+			{
+				m_UpnpMapper.Initialize();
+			}
+			if (m_UpnpMapper.IsAvailable())
+			{
+				m_UpnpMapper.AddMapping(port, "UDP", "ChainedDecos");
+				CH_CORE_INFO("Network: UPnP mapping added.");
+			}
+			else
+			{
+				CH_CORE_WARN("Network: UPnP unavailable — players must forward port {} manually.", port);
+			}
 
-		// Add Windows Firewall inbound rule
-		m_FirewallRuleActive = Firewall::AddUDPRule(port);
-		if (!m_FirewallRuleActive)
-		{
-			CH_CORE_WARN("Network: Could not add firewall rule. Run as admin to allow inbound connections.");
+			// Add Windows Firewall inbound rule
+			m_FirewallRuleActive = Firewall::AddUDPRule(port);
+			if (!m_FirewallRuleActive)
+			{
+				CH_CORE_WARN("Network: Could not add firewall rule. Run as admin to allow inbound connections.");
+			}
 		}
 
 		{

engine/networking/network_service.h

@@ -151,6 +151,15 @@ namespace Chained
 			return m_FirewallRuleActive;
 		}
 
+		void SetTestMode(bool enabled)
+		{
+			m_TestMode = enabled;
+		}
+		bool IsTestMode() const
+		{
+			return m_TestMode;
+		}
+
 		NetworkSession& GetSession()
 		{
 			return m_Session;
@@ -178,6 +187,7 @@ namespace Chained
 		std::string m_CachedPublicIP;
 		std::mutex m_PublicIPMutex;
 		bool m_FirewallRuleActive = false;
+		bool m_TestMode = false;
 
 		static constexpr uint64_t HostNetworkID = 1;
 	};

tests/integration/network_tests.cpp

@@ -21,6 +21,8 @@ namespace
 		void SetUp() override
 		{
 			m_Port = kTestPortBase + (s_PortCounter.fetch_add(1) % 50);
+			m_Host.SetTestMode(true);
+			m_Client.SetTestMode(true);
 			m_Host.Initialize();
 			m_Client.Initialize();
 			ASSERT_TRUE(m_Host.IsEnabled()) << "ENet failed to initialize";