feat: 添加bun-test项目并配置Rollup打包

新增bun-test项目，包含Rollup配置、lodash-es依赖及示例代码，同时更新pnpm-lock.yaml

bun-test/.gitignore

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+node_modules
+dist

bun-test/package.json

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+{
+  "name": "bun-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "packageManager": "pnpm@10.25.0",
+  "devDependencies": {
+    "@types/bun": "^1.3.4"
+  },
+  "dependencies": {
+    "@rollup/plugin-node-resolve": "^16.0.3",
+    "esbuild": "^0.27.2",
+    "lodash-es": "^4.17.22",
+    "rollup": "^4.54.0"
+  }
+}

bun-test/rollup.config.ts

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+// rollup.config.ts
+import type { Plugin, RollupOptions } from 'rollup';
+import { nodeResolve } from '@rollup/plugin-node-resolve';
+
+const cdnRewritePlugin: Plugin = {
+  name: 'rewrite-lodash-to-cdn',
+  resolveId(id) {
+    if (id === 'lodash-es') {
+      return 'https://esm.sh/lodash-es@5';
+    }
+    if (id.startsWith('lodash-es/')) {
+      const [, sub] = id.split('/', 2);
+      return `https://esm.sh/lodash-es@5/${sub}`;
+    }
+    return null;
+  },
+};
+
+const config: RollupOptions = {
+  input: 'src/index.ts',
+  output: {
+    dir: 'dist',
+    format: 'esm',
+  },
+  plugins: [cdnRewritePlugin, nodeResolve({ browser: true })],
+  external(id) {
+    return id.startsWith('https://');
+  },
+};
+
+export default config;

bun-test/src/index.ts

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+import { debounce } from 'lodash-es';
+
+export const debounceFn = debounce;