feat(scripts): JoinRoom_Layer (Layer 15) 脚本生成 26 spirits 1:1

⚠️ DEPRECATED: 后续 UI 迁移改用 funplay MCP 手工复刻 (playbook decision tree)
脚本生成路径遇到 __prefab 数组索引 + multi-frame 命名格式 (_01 vs _1) 复杂性,
决定回归到 funplay MCP 手工复刻路径. 此 prefab 作为脚本生成能力证据保留.

Layer 15 (JoinRoom_Layer) 26 spirits 1:1 完整:
- 6 个单帧 sprite (imgResID 11/2/8/3/187/373)
- 12 个 imgResID=9 数字按钮 (multi-frame 00009_01~12.png)
- 6 个 imgResID=46 房间号 0-5 (multi-frame 00046_01~10.png)
- 1 个 imgResID=28 椅子图标 (multi-frame 00028_1~2.png)
- 全部在 group-5 单 group, OriginPos=SelfPos=1 (top-left)

Cocos 验证: imported:true + invalid:false + 26 references 0 missing UUID

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

cocoscreator_projects/YouleNexus/assets/framework/ui/prefabs/_playbook_demo/JoinRoom_Layer.prefab.meta

@@ -0,0 +1,13 @@
+{
+  "ver": "1.1.50",
+  "importer": "prefab",
+  "imported": true,
+  "uuid": "2a5d57b1-cd83-40a0-89f5-cf4cb2941fe3",
+  "files": [
+    ".json"
+  ],
+  "subMetas": {},
+  "userData": {
+    "syncNodeName": "JoinRoom_Layer"
+  }
+}