Exclude other players from climb probes and spread network spawns

Wall/ceiling/ground climb probes now skip any player collider (own and
remote) instead of only the local hierarchy, so running into another
chameleon no longer triggers the climb mechanic. New players are placed
on a per-clientId ring at spawn (host stays at origin) to avoid stacking
into one collision pile.

Also persists the serialized defaults of the recent network fields into
the Player prefab (incl. the spawnRingRadius inspector tuning) and a TMP
dynamic-atlas reset artifact.

Assets/Scripts/PlayerCharacterController.cs

@@ -940,6 +940,16 @@ public partial class PlayerCharacterController : MonoBehaviour
     private float WorldHalfHeight => _controller.height * 0.5f * CapsuleScale;
     private const float ProbeReachSlack = 0.5f; // extra ray length beyond the capsule surface (scale-1 units)
 
+    /// <summary>
+    /// True if the collider belongs to ANY player avatar -- this one OR a networked remote. Every climb
+    /// probe must skip players: avatars still collide physically (this player's CharacterController vs a
+    /// remote's baked MeshCollider), but another chameleon's body must never register as a climbable
+    /// wall/ceiling/ground. Replaces the old self-only IsChildOf check -- self is a player too, so it
+    /// stays excluded. Finds the controller even on remotes, where the component is disabled (only the
+    /// GameObject's active state gates GetComponentInParent, not the component's enabled flag).
+    /// </summary>
+    private static bool IsPlayerCollider(Collider c) => c.GetComponentInParent<PlayerCharacterController>();
+
     /// <summary>
     /// Raycasts from the character center toward the surface (along -_wallNormal) to find the
     /// current normal and the gap (surface clearance) to it. The capsule's support distance
@@ -963,7 +973,7 @@ public partial class PlayerCharacterController : MonoBehaviour
         bool found = false;
         for (int i = 0; i < count; i++)
         {
-            if (_wallProbe[i].collider.transform.IsChildOf(transform)) // skip our own colliders
+            if (IsPlayerCollider(_wallProbe[i].collider)) // skip self and other player avatars
                 continue;
             if (_wallProbe[i].distance < best)
             {
@@ -1008,7 +1018,7 @@ public partial class PlayerCharacterController : MonoBehaviour
         bool found = false;
         for (int i = 0; i < count; i++)
         {
-            if (_wallProbe[i].collider.transform.IsChildOf(transform))
+            if (IsPlayerCollider(_wallProbe[i].collider))
                 continue;
             if (_wallProbe[i].normal.y >= CeilingNormalThreshold) // not a ceiling
                 continue;
@@ -1080,7 +1090,7 @@ public partial class PlayerCharacterController : MonoBehaviour
             origin, -_wallNormal, _wallProbe, maxDist, ~0, QueryTriggerInteraction.Ignore);
         for (int i = 0; i < count; i++)
         {
-            if (_wallProbe[i].collider.transform.IsChildOf(transform))
+            if (IsPlayerCollider(_wallProbe[i].collider))
                 continue;
             return true;
         }
@@ -1106,7 +1116,7 @@ public partial class PlayerCharacterController : MonoBehaviour
         bool found = false;
         for (int i = 0; i < count; i++)
         {
-            if (_wallProbe[i].collider.transform.IsChildOf(transform))
+            if (IsPlayerCollider(_wallProbe[i].collider))
                 continue;
             if (_wallProbe[i].distance < best)
             {