Add TownSquare scene assets, resource production docs, and model pipeline updates.

Bring in plaza props/prefabs, ZhaoYun source GLB, design originals, and Hunyuan/Blender tooling used to produce them.

Co-authored-by: Cursor <cursoragent@cursor.com>

AIClient/AgentScripts/InspectTownSquare.cs

@@ -0,0 +1,35 @@
+using System.Text;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public static class InspectTownSquare
+{
+    public static string Run()
+    {
+        var sb = new StringBuilder();
+        var root = GameObject.Find("TownSquare");
+        if (root == null)
+            return "no TownSquare";
+        foreach (Transform t in root.transform)
+        {
+            var b = default(Bounds);
+            var has = false;
+            foreach (var r in t.GetComponentsInChildren<Renderer>())
+            {
+                if (!has) { b = r.bounds; has = true; }
+                else b.Encapsulate(r.bounds);
+            }
+            var cols = t.GetComponentsInChildren<MeshCollider>().Length;
+            sb.AppendFormat(
+                "{0} pos={1} euler={2} scale={3} boundsC={4} size={5} meshCol={6}\n",
+                t.name,
+                t.position,
+                t.eulerAngles,
+                t.localScale,
+                has ? b.center : Vector3.zero,
+                has ? b.size : Vector3.zero,
+                cols);
+        }
+        return sb.ToString();
+    }
+}