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/install_character_bundles.py

@@ -6,13 +6,14 @@
   {ActorName}_base.png   # RGB albedo, A=AO/透明
   {ActorName}_mix.png    # RG sphere-normal, B=metallic, A=roughness
   {ActorName}.mat        # Test/XPbr
-  concept.png            # 可选
   {ActorName}.prefab     # Unity 菜单生成
 
+概念图留在 Doc/Design/Character/，不要拷进 Bundles。
+
 兼容旧五通道烘焙目录（_color/_normal/_ao/_metallic/_roughness）。
 
 用法：
-  python Tools/install_character_bundles.py -a MaleExplorer -b Tools/output/actor_game/actor_xpbr -c ref.png
+  python Tools/install_character_bundles.py -a MaleExplorer -b Tools/output/actor_game/actor_xpbr
 """
 from __future__ import annotations
 
@@ -116,19 +117,13 @@ def install(
                 shutil.copy2(meta, Path(str(target) + ".meta"))
         copied.append(str(target.relative_to(_repo_root())).replace("\\", "/"))
 
-    concept_rel = None
     if concept is not None:
         concept = concept.expanduser().resolve()
         if not concept.is_file():
             raise FileNotFoundError(f"概念图不存在: {concept}")
-        target = dest / "concept.png"
-        if not dry_run:
-            shutil.copy2(concept, target)
-        concept_rel = str(target.relative_to(_repo_root())).replace("\\", "/")
-        copied.append(concept_rel)
 
     mode = "xpbr" if "base" in sources else "legacy_pbr"
-    return {
+    result = {
         "ok": True,
         "actor": actor,
         "mode": mode,
@@ -139,6 +134,9 @@ def install(
             f"生成挂 XPbr 的 {actor}.prefab；并登记 Doc/ResDesc_Model.md"
         ),
     }
+    if concept is not None:
+        result["design"] = str(concept.relative_to(_repo_root())).replace("\\", "/")
+    return result
 
 
 def main(argv: list[str] | None = None) -> int:
@@ -150,7 +148,12 @@ def main(argv: list[str] | None = None) -> int:
         required=True,
         help="model_lowpoly_bake 的 *_xpbr 目录，或旧五通道 bake 子目录",
     )
-    p.add_argument("--concept", "-c", default=None, help="可选概念图，复制为 concept.png")
+    p.add_argument(
+        "--concept",
+        "-c",
+        default=None,
+        help="设计原稿路径（仅校验存在，不拷进 Bundles；应放在 Doc/Design/）",
+    )
     p.add_argument("--dry-run", action="store_true")
     args = p.parse_args(argv)
     try: