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>

Tools/output/townsquare_pipeline_summary.json

@@ -0,0 +1,58 @@
+[
+  {
+    "name": "ground",
+    "tris_target": 800,
+    "tris_after": null,
+    "glb": "Tools/output/townsquare_3d/ground/ground.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/ground"
+  },
+  {
+    "name": "shop",
+    "tris_target": 1800,
+    "tris_after": null,
+    "glb": "Tools/output/townsquare_3d/shop/shop.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/shop"
+  },
+  {
+    "name": "tree",
+    "tris_target": 1500,
+    "tris_after": null,
+    "glb": "Tools/output/townsquare_3d/tree/tree.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/tree"
+  },
+  {
+    "name": "lamp",
+    "tris_target": 500,
+    "tris_after": null,
+    "glb": "Tools/output/townsquare_3d/lamp/lamp.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/lamp"
+  },
+  {
+    "name": "board",
+    "tris_target": 800,
+    "tris_after": 800,
+    "glb": "Tools/output/townsquare_3d/board/board.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/board"
+  },
+  {
+    "name": "fountain",
+    "tris_target": 1800,
+    "tris_after": 1798,
+    "glb": "Tools/output/townsquare_3d/fountain/fountain.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/fountain"
+  },
+  {
+    "name": "bench",
+    "tris_target": 700,
+    "tris_after": 699,
+    "glb": "Tools/output/townsquare_3d/bench/bench.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/bench"
+  },
+  {
+    "name": "bush",
+    "tris_target": 500,
+    "tris_after": 21969,
+    "glb": "Tools/output/townsquare_3d/bush/bush.glb",
+    "dest": "AIClient/Assets/Bundles/Scenes/Town/TownSquare/bush"
+  }
+]