Content: Steam Audio export rename + wall transmission tuning

- The Room export split/renamed to 'The Room Scene.asset' / 'The Room Audio.asset' under Assets/Scenes (old root-level export removed), scene references updated
- Default Steam Audio material: transmission raised (0.8/0.6/0.3) so walls dampen less aggressively
- EditorSettings: enter-play-mode options reset

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/Scenes/Main.unity

@@ -1780,7 +1780,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: Unity.Multiplayer.Tools.NetworkSimulator.Runtime::Unity.Multiplayer.Tools.NetworkSimulator.Runtime.NetworkSimulator
   m_PresetAsset: {fileID: 0}
   m_PresetReference:
-    rid: 4015181404770926681
+    rid: 4015181438528520278
   m_Scenario:
     rid: -2
   m_IsScenarioSettingsFolded: 0
@@ -1790,7 +1790,7 @@ MonoBehaviour:
     RefIds:
     - rid: -2
       type: {class: , ns: , asm: }
-    - rid: 4015181404770926681
+    - rid: 4015181438528520278
       type: {class: NetworkSimulatorPreset, ns: Unity.Multiplayer.Tools.NetworkSimulator.Runtime, asm: Unity.Multiplayer.Tools.NetworkSimulator.Runtime}
       data:
         <Name>k__BackingField: 'Mobile 2G [CDMA & GSM, ''00]'