refactor: 对齐 MetonaEditor — babel-jest 替代 ts-jest

### Changed
- 测试框架: ts-jest → babel-jest (对齐 MetonaEditor 生产方案)
- jest.config.cjs: babel-jest transform + moduleNameMapper
- test 脚本: jest → jest --coverage (对齐 MetonaEditor)
- 移除 ts-jest, 新增 @babel/core/preset-env/preset-typescript/babel-jest

### Added
- babel.config.cjs (对齐 MetonaEditor)

### Fixed
- 恢复 tslib (@rollup/plugin-typescript 必需依赖)

### Verified
- tsc --noEmit: 零错误
- jest --no-coverage: 136/136 passed
- rollup build: 5 outputs

package.json

@@ -24,9 +24,8 @@
   "scripts": {
     "build": "tsc --noEmit && rollup -c",
     "dev": "rollup -c -w",
-    "test": "jest",
+    "test": "jest --coverage",
     "test:watch": "jest --watch",
-    "test:coverage": "jest --coverage",
     "lint": "eslint 'src/**/*.ts'",
     "lint:fix": "eslint 'src/**/*.ts' --fix",
     "format": "prettier --write 'src/**/*.ts' 'tests/**/*.ts'",
@@ -57,6 +56,10 @@
   },
   "homepage": "https://git.metona.cn/MetonaTeam/MetonaToast#readme",
   "devDependencies": {
+    "@babel/core": "^7.22.0",
+    "@babel/plugin-transform-modules-commonjs": "^7.22.0",
+    "@babel/preset-env": "^7.22.0",
+    "@babel/preset-typescript": "^7.22.0",
     "@rollup/plugin-commonjs": "^25.0.0",
     "@rollup/plugin-node-resolve": "^15.0.0",
     "@rollup/plugin-terser": "^0.4.0",
@@ -64,6 +67,7 @@
     "@types/jest": "^29.5.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
+    "babel-jest": "^29.5.0",
     "eslint": "^8.40.0",
     "jest": "^29.5.0",
     "jest-environment-jsdom": "^29.5.0",
@@ -72,8 +76,7 @@
     "rollup-plugin-dts": "^5.3.0",
     "rollup-plugin-livereload": "^2.0.5",
     "rollup-plugin-serve": "^2.0.1",
-    "ts-jest": "^29.4.12",
-    "tslib": "^2.8.1",
+    "tslib": "^2.6.0",
     "typescript": "^5.0.0"
   },
   "engines": {