chore(framework): TS 测试基建(tsx+node:test) + core 常量

- 补 @types/node（tsconfig types:[node] 所需，原计划遗漏）
- tsconfig 加 allowImportingTsExtensions（import 带 .ts 后缀所需）
- test:framework 改用 run-framework-tests.mjs 递归枚举（node 20.13 <20.14 不支持 --test glob）

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

cocoscreator_projects/tsconfig.framework.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "allowImportingTsExtensions": true,
+    "strict": true,
+    "noEmit": true,
+    "skipLibCheck": true,
+    "types": ["node"],
+    "lib": ["ES2020", "DOM"]
+  },
+  "include": [
+    "YouleNexus/assets/framework/**/*.ts",
+    "framework-tests/**/*.ts"
+  ]
+}