chore: 纳入项目全部源码进根仓库统一管理

删除 YouleNexus 内嵌 .git，统一由根仓库唯一管理。提交：
- projects/ 旧 H5 模板 Game_Surface_3 与各子游戏源码
- cocoscreator_projects/YouleNexus 工程 + cocos-creator-mcp 扩展源码
- CLAUDE.md、.mcp.json 等配置
library/temp/node_modules/dist 等缓存由 .gitignore 排除。

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

projects/Game_Surface_3/scripts/build_spine_data.cmd

@@ -0,0 +1,17 @@
+@echo off
+chcp 65001 >nul
+REM ============================================================
+REM  Spine 资源数据生成脚本
+REM  扫描 assets/spine/ 目录，自动生成：
+REM    generated/spine_assets.js  — 资源名清单
+REM    generated/spine_data.js    — .json/.atlas 文本内容嵌入
+REM
+REM  用法：双击运行，或在命令行执行：
+REM    cd codes\games\client\Projects\Spine\scripts
+REM    build_spine_data.cmd
+REM ============================================================
+
+pushd "%~dp0"
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0build_spine_data.ps1"
+popd
+pause