M1: add networked rigged player avatar (run-around character)

- Import Hodaart Low Poly Character Collection 3 (humanoid-rigged, LFS)
- PlayerAvatar.cs: owner-authoritative CharacterController movement, animation
  derived from measured speed on every client (no NetworkAnimator needed)
- OwnerAuthNetworkTransform.cs: owner-authoritative NetworkTransform
- PlayerLocomotion.controller: Idle/Walk/Run 1D blend tree on Speed (reuses
  Hodaart clips)
- PlayerCharacter.prefab (Character 01 + CC + NetworkObject + owner NT +
  PlayerAvatar + Animator w/ humanoid avatar); registered as PlayerPrefab
- Verified in play: spawns, visible, Idle pose (rig animates), owner-auth

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/Scripts/Player/OwnerAuthNetworkTransform.cs

@@ -0,0 +1,18 @@
+using Unity.Netcode.Components;
+
+namespace Jankenbots.Prototype
+{
+    /// <summary>
+    /// Owner-authoritative NetworkTransform. The default NetworkTransform is
+    /// SERVER-authoritative (right for the host-simulated bot/ball). For a
+    /// run-around PLAYER avatar we want the owning client to be the source of
+    /// truth so their own movement is lag-free — the owner writes its transform
+    /// and NGO replicates it to everyone else. This is the canonical NGO pattern
+    /// (override OnIsServerAuthoritative → false).
+    /// </summary>
+    [UnityEngine.DisallowMultipleComponent]
+    public class OwnerAuthNetworkTransform : NetworkTransform
+    {
+        protected override bool OnIsServerAuthoritative() => false;
+    }
+}