feat: add the dsh-superagent research prototype

tsdown.config.ts

@@ -0,0 +1,14 @@
+import { readFileSync } from 'node:fs'
+import { dirname, resolve } from 'node:path'
+import { defineConfig } from 'tsdown'
+// `?raw` imports a file as its text, as Vite and vitest do; tsdown refuses `.css` ids without @tsdown/css, so this loads them.
+const raw = { name: 'raw',
+  resolveId: (source: string, importer?: string) => source.endsWith('?raw') && importer ? resolve(dirname(importer), source) : undefined,
+  load: (id: string) => id.endsWith('?raw') ? { code: `export default ${JSON.stringify(readFileSync(id.slice(0, -4), 'utf8'))}`, moduleType: 'js' as const }
+    : undefined }
+export default defineConfig([
+  { entry: { index: 'src/index.ts', 'github-watch': 'src/sources/github.ts', 'feishu-watch': 'src/sources/feishu.ts' }, outDir: 'lib', format: 'esm', fixedExtension: false, platform: 'node', target: 'es2024', dts: true, clean: true, deps: { neverBundle: [/^@deepseek-ai\//, 'zod', 'proper-lockfile'] } },
+  { entry: { client: 'src/client/index.tsx' }, outDir: 'lib', format: 'cjs', platform: 'browser', dts: false, clean: false, plugins: [raw],
+    deps: { neverBundle: ['react', 'react/jsx-runtime', 'react-dom'] },
+    outputOptions: { entryFileNames: 'client.js', banner: 'window.__ModuleLoader__.load({ id: "dsh-superagent", factory: (require) => {', footer: 'return module.exports; } });', intro: 'var module = { exports: {} }; var exports = module.exports;' } },
+])