Scene split: MainMenu frontend + Game gameplay scenes; build/render settings

Add MainMenu.unity (build index 0, UITK frontend) alongside Game.unity (index 1); reorder EditorBuildSettings; URP/volume profile + project settings updates supporting the menu/game split.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ProjectSettings/EditorBuildSettings.asset

@@ -5,14 +5,17 @@ EditorBuildSettings:
   m_ObjectHideFlags: 0
   serializedVersion: 2
   m_Scenes:
+  - enabled: 1
+    path: Assets/Scenes/MainMenu.unity
+    guid: c470b373362ef9d4999bc3ef4e904158
   - enabled: 1
     path: Assets/Scenes/Game.unity
     guid: db8738f16e802c8488f9c22aa56e1e60
-  - enabled: 1
-    path: Assets/Scenes/SampleScene.unity
-    guid: 99c9720ab356a0642a771bea13969a05
   - enabled: 1
     path: Assets/Scenes/DevSandbox.unity
     guid: 1d4b5e92ac7b6ea4880d30545df94704
+  - enabled: 1
+    path: Assets/Scenes/SampleScene.unity
+    guid: 99c9720ab356a0642a771bea13969a05
   m_configObjects:
     com.unity.input.settings.actions: {fileID: -944628639613478452, guid: 5aa62f6ed584c43b791e76f2fd31820f, type: 3}

ProjectSettings/ProjectSettings.asset

@@ -144,7 +144,8 @@ PlayerSettings:
   visionOSBundleVersion: 1.0
   tvOSBundleVersion: 1.0
   bundleVersion: 0.1.0
-  preloadedAssets: []
+  preloadedAssets:
+  - {fileID: 11400000, guid: 44cd3062bcdc07e43aaec59b78f224a6, type: 2}
   metroInputSource: 0
   wsaTransparentSwapchain: 0
   xboxOneDisableKinectGpuReservation: 1
@@ -522,7 +523,10 @@ PlayerSettings:
       m_Height: 720
       m_Kind: 1
       m_SubKind: 
-  m_BuildTargetBatching: []
+  m_BuildTargetBatching:
+  - m_BuildTarget: Standalone
+    m_StaticBatching: 1
+    m_DynamicBatching: 0
   m_BuildTargetShaderSettings: []
   m_BuildTargetGraphicsJobs: []
   m_BuildTargetGraphicsJobMode: []

ProjectSettings/UnityConnectSettings.asset

@@ -4,7 +4,7 @@
 UnityConnectSettings:
   m_ObjectHideFlags: 0
   serializedVersion: 1
-  m_Enabled: 0
+  m_Enabled: 1
   m_TestMode: 0
   m_EventOldUrl: https://api.uca.cloud.unity3d.com/v1/events
   m_EventUrl: https://cdp.cloud.unity3d.com/v1/events