"Add MCQ gate pooling, road mesh combining, fix tick audio & navigation guards"

My project/Assets/App/Infrastructure/Core/AppRouter.cs

@@ -31,6 +31,26 @@ public class AppRouter : MonoBehaviour
         DontDestroyOnLoad(gameObject);
 
         Application.targetFrameRate = Screen.currentResolution.refreshRate;
+        Screen.orientation = ScreenOrientation.Portrait;
+    }
+
+    private void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.Escape))
+            HandleBackButton();
+    }
+
+    private void HandleBackButton()
+    {
+        // Don't interrupt active challenges
+        if (ChallengeManager.Instance != null && ChallengeManager.Instance.IsChallengeRunning)
+            return;
+
+        var scene = SceneManager.GetActiveScene().name;
+        if (scene == "MainMenu")
+            Application.Quit();
+        else if (scene != "Login" && scene != "Boot")
+            GoToHome();
     }
 
     private async void Start()

My project/Assets/App/UI/HomeController.cs

@@ -30,6 +30,9 @@ public class HomeController : MonoBehaviour
 
     private VisualElement menuPanel;
 
+    // Navigation guard — prevents concurrent Challenge + Practice clicks
+    public static bool IsNavigating { get; private set; }
+
     void Start()
     {
         var root = mainMenuDocument.rootVisualElement.Q("Home");
@@ -135,6 +138,12 @@ public class HomeController : MonoBehaviour
 
     private void OnChallengeButtonClicked()
     {
+        if (IsNavigating) return;
+        IsNavigating = true;
+
+        challengeButton.SetEnabled(false);
+        if (practiceButton != null) practiceButton.SetEnabled(false);
+
         var challenge = Instantiate(challengePrefab);
         var challengeManager = challenge.GetComponent<ChallengeManager>();
 
@@ -143,6 +152,7 @@ public class HomeController : MonoBehaviour
 
     private void OnDestroy()
     {
+        IsNavigating = false;
         UserService.Instance.OnUserChanged -= OnUserChange;
         challengeButton.clicked -= OnChallengeButtonClicked;
     }

My project/Assets/AppUI/Scripts/MainmenuAnimation.cs

@@ -105,6 +105,7 @@ public class MainmenuAnimation : MonoBehaviour
 
         openPracticeButton.clicked += () =>
         {
+            if (HomeController.IsNavigating) return;
             SelectGamePanel.style.display = DisplayStyle.Flex;
             SelectGamePanel.experimental.animation.Start(0, 1, 200, (v, t) =>
             {

My project/Assets/Resources/PerformanceTestRunInfo.json

-{"TestSuite":"","Date":0,"Player":{"Development":false,"ScreenWidth":0,"ScreenHeight":0,"ScreenRefreshRate":0,"Fullscreen":false,"Vsync":0,"AntiAliasing":0,"Batchmode":false,"RenderThreadingMode":"MultiThreaded","MtRendering":false,"GraphicsJobs":false,"GpuSkinning":true,"Platform":"","ColorSpace":"","AnisotropicFiltering":"","BlendWeights":"","GraphicsApi":"","ScriptingBackend":"IL2CPP","AndroidTargetSdkVersion":"AndroidApiLevelAuto","AndroidBuildSystem":"Gradle","BuildTarget":"Android","StereoRenderingPath":"MultiPass"},"Hardware":{"OperatingSystem":"","DeviceModel":"","DeviceName":"","ProcessorType":"","ProcessorCount":0,"GraphicsDeviceName":"","SystemMemorySizeMB":0},"Editor":{"Version":"6000.3.9f1","Branch":"6000.3/staging","Changeset":"7a9955a4f2fa","Date":1770746648},"Dependencies":["com.cysharp.unitask@2.5.10","com.github-glitchenzo.nugetforunity@4.5.0","com.unity.2d.sprite@1.0.0","com.unity.ai.navigation@2.0.11","com.unity.cinemachine@3.1.6","com.unity.collab-proxy@2.11.4","com.unity.ide.rider@3.0.39","com.unity.ide.visualstudio@2.0.26","com.unity.inputsystem@1.19.0","com.unity.multiplayer.center@1.0.1","com.unity.nuget.newtonsoft-json@3.2.2","com.unity.postprocessing@3.5.4","com.unity.recorder@5.1.6","com.unity.render-pipelines.universal@17.3.0","com.unity.shadergraph@17.3.0","com.unity.test-framework@1.6.0","com.unity.timeline@1.8.11","com.unity.ugui@2.0.0","com.unity.visualeffectgraph@17.3.0","com.unity.visualscripting@1.9.11","media.lightside.unitext@1.0.0","com.unity.modules.accessibility@1.0.0","com.unity.modules.adaptiveperformance@1.0.0","com.unity.modules.ai@1.0.0","com.unity.modules.androidjni@1.0.0","com.unity.modules.animation@1.0.0","com.unity.modules.assetbundle@1.0.0","com.unity.modules.audio@1.0.0","com.unity.modules.cloth@1.0.0","com.unity.modules.director@1.0.0","com.unity.modules.imageconversion@1.0.0","com.unity.modules.imgui@1.0.0","com.unity.modules.jsonserialize@1.0.0","com.unity.modules.particlesystem@1.0.0","com.unity.modules.physics@1.0.0","com.unity.modules.physics2d@1.0.0","com.unity.modules.screencapture@1.0.0","com.unity.modules.terrain@1.0.0","com.unity.modules.terrainphysics@1.0.0","com.unity.modules.tilemap@1.0.0","com.unity.modules.ui@1.0.0","com.unity.modules.uielements@1.0.0","com.unity.modules.umbra@1.0.0","com.unity.modules.unityanalytics@1.0.0","com.unity.modules.unitywebrequest@1.0.0","com.unity.modules.unitywebrequestassetbundle@1.0.0","com.unity.modules.unitywebrequestaudio@1.0.0","com.unity.modules.unitywebrequesttexture@1.0.0","com.unity.modules.unitywebrequestwww@1.0.0","com.unity.modules.vectorgraphics@1.0.0","com.unity.modules.vehicles@1.0.0","com.unity.modules.video@1.0.0","com.unity.modules.vr@1.0.0","com.unity.modules.wind@1.0.0","com.unity.modules.xr@1.0.0","com.unity.modules.subsystems@1.0.0","com.unity.modules.hierarchycore@1.0.0","com.unity.render-pipelines.core@17.3.0","com.unity.ext.nunit@2.0.5","com.unity.searcher@4.9.4","com.unity.render-pipelines.universal-config@17.0.3","com.unity.collections@2.6.2","com.unity.bindings.openimageio@1.0.2","com.unity.splines@2.8.2","com.unity.burst@1.8.28","com.unity.mathematics@1.3.3","com.unity.nuget.mono-cecil@1.11.6","com.unity.test-framework.performance@3.2.0","com.unity.settings-manager@2.1.1"],"Results":[]}
\ No newline at end of file

My project/Assets/Resources/PerformanceTestRunSettings.json

-{"MeasurementCount":-1}
\ No newline at end of file

My project/Assets/ScienceStreet/CS/Scripts/CsGameManager.cs

@@ -398,6 +398,8 @@ namespace com.al_arcade.cs
         // ─── End sequences ────────────────────────────────────────────────────
         protected override IEnumerator SharedVictorySequence()
         {
+            if (_isTicking) { _isTicking = false; SSAudioManager.Instance?.Tick(false); }
+
             var audio = SSAudioManager.Instance;
             audio.PlayVictory();
 
@@ -427,6 +429,8 @@ namespace com.al_arcade.cs
 
         protected override IEnumerator SharedLoseSequence()
         {
+            if (_isTicking) { _isTicking = false; SSAudioManager.Instance?.Tick(false); }
+
             SSAudioManager.Instance.PlayDefeat();
             onGameComplete?.Invoke(_score);
             SSAudioManager.Instance.StopMusic();

My project/Assets/ScienceStreet/MCQ/Scripts/McqGameManager.cs

@@ -629,6 +629,8 @@ namespace com.al_arcade.mcq
         // ─── End Sequences ───────────────────────────────────────────────────
         protected override IEnumerator SharedVictorySequence()
         {
+            if (_isTicking) { _isTicking = false; SSAudioManager.Instance?.Tick(false); }
+
             var audio = SSAudioManager.Instance;
             if (audio != null)
             {
@@ -653,6 +655,8 @@ namespace com.al_arcade.mcq
 
         protected override IEnumerator SharedLoseSequence()
         {
+            if (_isTicking) { _isTicking = false; SSAudioManager.Instance?.Tick(false); }
+
             StopPlayerAndCompetitor();
 
             var audio = SSAudioManager.Instance;