Authoring: hotkey hints on menu buttons, pose radial radius, Player.mat

Main: Taunt/Pose button labels show their hotkeys (E/C), pose radial
radius 220 -> 150. Player.mat switched to URP Lit (drops invalid
keyword), UMotion project state churn.

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

Assets/Scenes/Main.unity

@@ -2515,7 +2515,7 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 5033282336136931810, guid: 2f104ea08ab5c4141b58109d91dbe7df, type: 3}
       propertyPath: m_text
-      value: Taunt
+      value: Taunt (E)
       objectReference: {fileID: 0}
     - target: {fileID: 6262868416683193056, guid: 2f104ea08ab5c4141b58109d91dbe7df, type: 3}
       propertyPath: m_Sprite
@@ -7204,7 +7204,7 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: 5033282336136931810, guid: 2f104ea08ab5c4141b58109d91dbe7df, type: 3}
       propertyPath: m_text
-      value: Pose
+      value: Pose (C)
       objectReference: {fileID: 0}
     - target: {fileID: 6262868416683193056, guid: 2f104ea08ab5c4141b58109d91dbe7df, type: 3}
       propertyPath: m_Sprite
@@ -9574,7 +9574,7 @@ MonoBehaviour:
   panelRoot: {fileID: 724536060}
   itemContainer: {fileID: 1582359526}
   itemPrefab: {fileID: 8162620711324250373, guid: 2f104ea08ab5c4141b58109d91dbe7df, type: 3}
-  radius: 220
+  radius: 150
 --- !u!1 &1237210244
 GameObject:
   m_ObjectHideFlags: 0