import { cpSync, existsSync,  readdirSync, mkdirSync, readFileSync, realpathSync, rmSync } from "node:fs";import path from "node:path";import { spawnSync } from "node:child_process";import { fileURLToPath } from "node:url"; const packageDir = path.dirname(path.dirname(fileURLToPath(import.meta.url)));const distDir = path.join(packageDir, "dist");const bundlePath = path.join(distDir, "standalone.mjs");const runtimePackages = [  "playwright-core",  "chromium-bidi",  "mitt",  "devtools-protocol",  "@silvia-odwyer/photon-node",  "undici",  // pty-service loads node-pty with a dynamic require at runtime, so the  // bundler never sees it — it has to travel as real files. Without these the  // packaged app's every terminal open failed with "Cannot find module  // '@lydell/node-pty'" while the UI kept re-opening the dead terminal.  "@lydell/node-pty",]; rmSync(distDir, { recursive: true, force: true });mkdirSync(distDir, { recursive: true }); const build = spawnSync(  "bun",  [    "build",    "src/server.ts",    "--target=node",    "--external",    "fsevents",    "--external",    "playwright-core",    "--external",    "@silvia-odwyer/photon-node",    "--external",    "undici",    "--outfile=dist/standalone.mjs",  ],  { cwd: packageDir, stdio: "inherit" },); if (build.status !== 0) {  throw new Error(`Agent runtime bundle failed with status ${build.status ?? "unknown"}`);} // The platform package carries the native prebuild; copy whichever ones the// build machine has installed (darwin-arm64 locally, linux-x64 in CI).const lydellDir = path.join(packageDir, "node_modules", "@lydell");if (existsSync(lydellDir)) {  for (const entry of readdirSync(lydellDir)) {    if (entry.startsWith("node-pty-")) runtimePackages.push(`@lydell/${entry}`);  }} for (const packageName of runtimePackages) {  const segments = packageName.split("/");  const source = path.join(packageDir, "node_modules", ...segments);  const destination = path.join(distDir, "node_modules", ...segments);  if (!existsSync(path.join(source, "package.json"))) {    throw new Error(`Missing browser runtime package: ${packageName}`);  }  mkdirSync(path.dirname(destination), { recursive: true });  cpSync(source, destination, { recursive: true });} const bundle = readFileSync(bundlePath, "utf8");const sourceRoot = realpathSync(path.join(packageDir, "..", ".."));if (bundle.includes(sourceRoot)) {  throw new Error(`Agent runtime bundle contains the build-machine root: ${sourceRoot}`);} console.log(`Packaged portable browser runtime: ${runtimePackages.join(", ")}`);