Update scene transforms, prefabs and workspace

Modify Assets/Scenes/Main Scene.unity: adjust multiple GameObject transforms and prefab instance localPositions (several large position shifts), rename/add objects (TeleporterE1, HallT_Label3 -> TeleporterE1, BulletInsert), add new prefab instance modifications, update mesh/material references and ray-tracing mode, remove many temporary/unused Cube entries to clean up the scene, and activate a character (Nolan). Update .idea workspace.xml: add changelist entry referencing the scene, add a short workItem entry timestamp, and remove a Unity reference flag. Overall: scene layout and prefab cleanup, plus small IDE metadata updates.

.idea/.idea.BABA_YAGA/.idea/workspace.xml

@@ -4,7 +4,9 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d308d1cb-09fc-4331-ba20-00f7b43d1576" name="Changes" comment="" />
+    <list default="true" id="d308d1cb-09fc-4331-ba20-00f7b43d1576" name="Changes" comment="">
+      <change beforePath="$PROJECT_DIR$/Assets/Scenes/Main Scene.unity" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scenes/Main Scene.unity" afterDir="false" />
+    </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -109,6 +111,7 @@
       <workItem from="1781181289365" duration="2651000" />
       <workItem from="1781412609976" duration="4823000" />
       <workItem from="1781599612251" duration="8140000" />
+      <workItem from="1781617583814" duration="42000" />
     </task>
     <servers />
   </component>
@@ -117,7 +120,6 @@
   </component>
   <component name="UnityProjectConfiguration" hasMinimizedUI="true" />
   <component name="UnityProjectDiscoverer">
-    <option name="hasUnityReference" value="true" />
     <option name="unityProject" value="true" />
     <option name="unityProjectFolder" value="true" />
   </component>