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/gamehall3/output/gameabc_Project.json

@@ -0,0 +1,44 @@
+{
+ "Property": {
+  "ProjectName": "gamehall3",
+  "ScreenWidth": 1280,
+  "ScreenHeight": 720,
+  "GameSceneWidth": 2337,
+  "GameSceneHeight": 1800,
+  "ScreenFitMode": 1,
+  "TcpIP": "",
+  "TcpPort": "",
+  "Http": "",
+  "title": ""
+ },
+ "Event": {
+  "gamestart": 0,
+  "gamebegindraw": 0,
+  "gameenddraw": 0,
+  "mousedown": 0,
+  "mousedown_nomove": 0,
+  "mouseup": 0,
+  "mousemove": 0,
+  "gamemydraw": 0,
+  "gamemydrawbegin": 0,
+  "chongzhi": 0,
+  "tcpconnected": 0,
+  "tcpdisconnected": 0,
+  "tcpmessage": 0,
+  "tcperror": 0,
+  "httpmessage": 0,
+  "ani_doend": 0,
+  "box_doend": 0,
+  "onresize": 0,
+  "ontimer": 0,
+  "onloadurl": 0
+ },
+ "Option": {
+  "fps": 30,
+  "tag": 0,
+  "tag1": 0,
+  "tag2": 0,
+  "tag3": 0,
+  "showmodel": 0
+ }
+}