Art: Bathynaut body-swap into the gameplay Player (Mark-V + brass/teal split)

The approved staging character is now in the shipping animated Player.prefab:
- Re-exported the skinned kit FBX dome-less + the Synty Mark-V helmet skinned to the Head bone (3
  submeshes brass/gunmetal/glass); replaced the old fused dome.
- Split materials: brass armour, dark-teal undersuit, gunmetal tank pack, warm shoulder beacon, teal
  porthole glow.
- ★ per-instance _BaseColor gotcha: the hit-flash system sets URPMaterialPropertyBaseColor=(1,1,1) on
  every player render child, which REPLACES the material _BaseColor -> flat-color materials washed
  cream. Fix = drive color via a solid-color _BaseColorMap texture (DiverTex/), not _BaseColor.
Verified live in DevSandbox from the game camera: copper Mark-V + brass armour + teal undersuit +
gunmetal tanks + warm beacon, animated, reads at true game scale.

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

Assets/_Project/Art/Materials/M_Diver_Metal_Skinned.mat

@@ -38,7 +38,7 @@ Material:
     serializedVersion: 3
     m_TexEnvs:
     - _BaseColorMap:
-        m_Texture: {fileID: 0}
+        m_Texture: {fileID: 2800000, guid: b5641ebbdcdaa6545bf930cdfbc44226, type: 3}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
     - _MaskMap:
@@ -70,7 +70,7 @@ Material:
     - _Smoothness: 0.45
     - _USE_VERTEX_COLOR: 0
     m_Colors:
-    - _BaseColor: {r: 0.09, g: 0.1, b: 0.12, a: 1}
+    - _BaseColor: {r: 1, g: 1, b: 1, a: 1}
     - _DeformationParamsForMotionVectors: {r: 0, g: 0, b: 0, a: 0}
   m_BuildTextureStacks: []
   m_AllowLocking: 1