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>

cocoscreator_projects/YouleNexus/extensions/cocos-creator-mcp/i18n/en.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = {
+    description: "MCP (Model Context Protocol) server for Cocos Creator",
+    panel_title: "Cocos Creator MCP",
+    open_panel: "Open Panel",
+    recorder_title: "Preview Recorder",
+    open_recorder: "Open Recorder",
+};

cocoscreator_projects/YouleNexus/extensions/cocos-creator-mcp/i18n/ja.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = {
+    description: "Cocos Creator用 MCP (Model Context Protocol) サーバー",
+    panel_title: "Cocos Creator MCP",
+    open_panel: "パネルを開く",
+    recorder_title: "Preview Recorder",
+    open_recorder: "Previewレコーダー",
+};

cocoscreator_projects/YouleNexus/extensions/cocos-creator-mcp/i18n/zh.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = {
+    description: "Cocos Creator MCP (模型上下文协议) 服务器",
+    panel_title: "Cocos Creator MCP",
+    open_panel: "打开面板",
+    recorder_title: "Preview Recorder",
+    open_recorder: "打开录制器",
+};